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User Manual - Instrumart

1. 1 The Model 6472 cannot detect whether a current clamp SR182 or MN82 is connected In the case of the MN82 clamp with currents gt 10A and frequencies lt 100Hz the instrument will not display any warning messages It is the operator s responsibility to observe the limits of use when using the MN82 clamp 3 2 4 DC Resistance Measurements Measuring Method Voltage Current measurement Standard EN 61557 part 4 Nominal Output Voltage 16Vpc if resistance lt 220 the output voltage is reduced to 10VDc Max Output Current gt 200mAbDc for resistances lt 200 Max Overload permanent 50Vrms protection up to 250V is guaranteed Max Inductive Load 2 H Max Interfering Voltage G0Vpeak gt 10Hz Time for Auto Range Selecting approx 5 s Measuring Time 8 s with automatic polarity inversion Measuring Rate 3 per s in manual mode Lead Compensation Possible from 0 to 50 Alarm Setting gt or lt from 1 to 999Q max 3 digits 2 Pole mQ measurement Measurement 0 12 to 10 0 to 100 to 1 00 to 10 0 to Range 9 990 99 90 9990 9 99kQ 99 9kQ Resolution 0 010 0 10 10 10Q 1009 Intrinsic error 2 2cts Operating error 5 3cts 18 Ground Resistance Tester Model 6472 4 Pole mQ measurement Measurement 0 020 to 10 00 to 100 0 to 1 000 to 10 00 to Range 9 9990 99 990 999 90 9 999kQ 99 99KQ Resolution 0 0010 0 010 0 10 IO 10Q Intrinsic error
2. o kQ START STOP SF NOTE Repeat the process at 52 and at 72 for the S electrode 5 4 2 Full Method A more thorough measurement can be obtained by taking measurement by mov ing the S Y auxiliary electrode every 10 between H Z and E X and plotting the results A distinct plateau should result as shown below R30 R40 R50 pen R70 0 10 20 30 40 50 60 70 80 90 100 H E Take the average of the 3 or 4 readings on the R40 R50 R60 R70 plateau to obtain the earth electrode resistance R 4 34 Ground Resistance Tester Model 6472 5 4 3 Recommendations for a Reliable Measurement Moving the Auxiliary Electrodes Move electrode S Y towards electrode H Z by a distance equal to 10 of d and make another measurement Then move electrode S Y again by a distance equal to 10 of d but towards the earth electrode The 3 measurement results should be the same to within a few percent If this is the case the measurement is valid If not electrode S Y is in the zone of influence of the earth electrode It will be necessary to increase distance d for the H Z auxiliary electrode and repeat the measurements Positioning of the Auxiliary Electrodes To make sure that your earth measurements are not distorted by interference we recommend repeating the measurement with the auxiliary electrodes placed at a different distance and in another direction for example rotated 90 from the first alignment
3. 10 If the instrument selected for installation requires the use of a USB port a warning box will appear similar to Figure 8 3 Click OK l DataView InstallShield Wizard Do not connect the AEMC USB Instrument or cable until after the installation of the drivers and the DataView software has finished If the AEMC USB Instrument or cable is connected to the computer now then disconnect it from the computer before proceeding Le Figure 8 3 Ground Resistance Tester Model 6472 59 NOTE The installation of the drivers may take a few moments Windows may even indicate that it is not responding however it is running Please wait for it to finish we 11 When the drivers are finished installing the Installation Successful dialog box will appear Click on OK 12 Next the Installation Wizard Complete window will appear Click on Finish 13 A Question dialog box appears next Click Yes to read the procedure for con necting the instrument to the USB port on the computer A NOTE The Set up window remains open You may now select another option to download e g Adobe Reader or close the window 14 Restart your computer then connect the instrument to the computer 15 Once connected the Found New Hardware dialog box will appear Windows will complete the driver installation process automatically Shortcuts for DataView and each instrument control panel selec
4. EE ZS 1 Le Lem is SG ere SES EE o D a 20b START STOP a qe AY To display the measurement parameters press DISPLAY several times The device displays the following parameters Pg Rass d Us eg Jus U Act UL and its frequency U and its frequency To measure the resistances of the auxiliary electrodes H Z S Y ES Xv Ground Resistance Tester Model 6472 43 and E X or if the resistance of the electrodes is too high see 10 1 start the measurement by a long press of the START STOP button R and R then R and R will be displayed e ii eo WC OP 43X OP 33 4 E E Nm E Te Um en Fe a a a a pee R wer ves R en gt 25 6 P E H ko 6 PER A i R i R IER P H 7 E QO t P 5 LI fw AUTO AUTO START STOP DISPLAY 5 7 Potential Measurement V pot The earth potential measurement is similar to the 3 pole earth measurement but rather than measuring the resistance the device measures the potential U on auxiliary electrode S Y at different distances d from earth electrode E X The relative potential U is the ratio between the voltage U measured on electrode S Y and the total applied voltage U it is therefore a number between 0 and 1 After entering a set of values for different distances d you can determine the varia tion of the potential around an earth 1 Set the switch to V pot 2 Place electrode H Z at a dis
5. H Z S Y e E H Z S Y e a E X d1 ee If you find the same values your measurement is reliable If the measured values are substantially different it is likely that they were influenced by earth currents or a groundwater source It may be useful to drive the electrodes deeper and or wet the ground near them to reduce their contact resistance with the soil Avoid routing the connecting cables of the earth electrodes near or parallel to other cables transmission or supply metallic conductors rails or fences high test fre quencies may cause cross talk and affect the measurements Ground Resistance Tester Model 6472 35 5 5 Earth Ground Measurement 4 Pole 5 5 1 Measurement without a Clamp This function is suited to the measurement of very low earth resistances It provides better resolution 10x better than 3P measurement and there is no need to compensate for the resistance of the measurement leads 1 Set the switch to EA 2 Place electrodes H Z and S Y at least 30m apart 4 Pole gt 30m gt 30m E SS In order to avoid electromagnetic interference it is best to unwind the full length of each cable from the reel to keep the cables as far apart as possible on the ground taking care not to form loops and to avoid placing the cables near or parallel to metallic conductors cables rails fences etc Connect the cables to terminals H Z and S Y disconnect the earth strap from the rod unde
6. Installs DataView onto the PC e Adobe Reader Links to the Adobe website to download the most recent version of Adobe Reader to the computer Adobe Reader is required for viewing PDF documents supplied with DataView that are accessible from the Help menu e DataView Updates Links to the online AEMC software updates to check for new software version releases e Firmware Upgrades Links to the online AEMC firmware updates to check for new firmware version releases Documents Shows a list of instrument related documents that you can view Adobe Reader is required for viewing PDF documents supplied with DataView 3 DataView Version x xx xxxx option should be selected by default Select the desired language and then click on Install 4 The Installation Wizard window will appear Click Next 5 To proceed accept the terms of the license agreement and click Next 6 Inthe Customer Information window enter a Name and Company then click Next 58 Ground Resistance Tester Model 6472 In the Setup Type window that appears select the Complete radio button option then click Next In the Select Features window that appears deselect the instrument s control panel that you do not want to install then click Next NOTE The PDF XChange option must be selected to be able to generate PDF reports from within DataView Figure 8 2 9 Inthe Ready to Install the Program window click on Install
7. e The instability of the measurement is large 80 Ground Resistance Tester Model 6472 Conditions that may give uncertain results are indicated on the display of the unit as follows A A Indication on the Frequency Function Triggering threshold display unit 3P 4P V pot Le lt 6 MA f gt 513Hz s 4Psel GroundFlex Le lt 6 mA A flashes 3P 4P p V pot lee lt 1mA flashes f lt 513Hz 4Psel GroundFlex lee lt 1mA f gt 513Hz All except p and 2 R gt 5KQ clamps S flashes flashes f lt 513Hz All R gt 30 kQ flashes 7 4P sel leg lt 1 MA le flashes A flashes lt GroundFlex La lt 10 MA flashes Values measured U All R unstable varying A steady by more than 5 about flashes their mean values 2 ls lt 3 MA Reass Ise lt 30 MA flashes Uses lt 10 mV ls lt 0 3 mA Riss La lt 3 MA undefined Uses lt 1 mV All Uses Use Upe gt 42 V flashes Stray voltage of which the frequency and or 4 All value is likely to inter LNOISE fere with the measure ment 1 2 3 4 Le Current Le measured at the start of the measurement before lse Not active if the SMOOTH function is selected The A symbol may also appear if there is an external voltage gt 42 V on the terminals of the device You should change to manual mode and modify the measurement voltage and or freque
8. e Turn the rotary switch to 3 Pole e Select a test frequency and a test voltage if desired e The screen displays EARTH COUPLING 1 Make a 3 pole earth measure ment on the first earth system measurement of R in the connection dia gram on previous page e Stop the measurement by pressing the START STOP button The MEM symbol flashes to indicate that this result must be recorded in memory Press the MEM button twice To save to another location refer to 7 e The screen now displays EARTH COUPLING 2 Make a 3 pole earth mea surement on the second earth system measurement of R For this second measurement leave the H Z and S Y electrodes in the same positions as for the first measurement Store this result in the same memory location as before by pressing the MEM button twice e The screen now displays the message EARTH COUPLING 3 Disconnect terminal S Y and make a 2 wire resistance measurement with terminal H Z connected to earth 1 and terminal E X to earth 2 e Record this result by pressing the MEM button twice e EARTH COUPLING 4 and the results of the measurements are displayed The calculation is based on the following formulas R R R R 2 C RJ R and C RJR R R R R R Ro s To display all of the measurement parameters press the MR button e To scroll through all of the measurements use the gt and A buttons then x4 gt gt A an MR Ground Resistance Tester Mo
9. 8 5 Tools Menu 8 5 1 Tools gt Options Set number display as scientific 1000 as 1E 3 or letters 1000 as 1k e Set Label Terminals to be X Xv Y Z or E ES S H e Set Measurement units to meter or feet e Set Rho units to Ohm meter or Ohm centimeter 8 5 2 Tools gt Colors Sets colors for measurement channels 8 5 3 Tools gt Recover Data Every time the directory of recorded data is displayed by the Ground Tester Control Panel a backup copy of all the data is saved to a file Use this option to recover previous data 8 6 Starting a Test Press the START button to begin a test Some tests configurations are automatic and end when the data is stable Others generally when there is a manual fre quency show a Stop button which should be pressed when the data is available on the screen and has stable values 8 7 Downloading Data to Database Select Recorded Data from the View menu to download the recorded data 1 Select the data you want to download by clicking on the file name see Figure 8 14 2 Select Create DataView Report DataView will be open with the newly created report 3 Alternatively select Create Spreadsheet Type a name for the download ed file In the Save as type drop down menu select either ve saves it as an Excel spreadsheet file or csv saves it as a comma delimited file then click Save 4 Alternatively select View After the download is complete a window
10. E eoe o 2 e e em A DISTANCE e e E p n E econ E veer rb Sas eo Ap e in aetna AUTO 2nd DISTANCE 4 To modify the hundredths of meters or feet press the A button until the desired digit is displayed 0 9 5 To select and modify the tens press the gt button and then the A button until the desired digit is displayed 0 9 6 To select and modify the units and tenths of a unit press the gt button and then the A button until the desired digits are displayed 0 0 9 9 7 To terminate the programming of distance press the 2nd button and then the DISTANCE button It is also necessary to program distance A This is done in the same way as for distance d 8 Start the measurement by pressing the START STOP button eu i el mG Or MICA Ck IEJ io LUC DO ex E A2 it DD U II w i a UL se J11 e SE o me Di 9 To display the measurement parameters press DISPLAY several times Ground Resistance Tester Model 6472 33 The device displays the following parameters Re Use lhe U Act UU e and its frequency LU and its frequency To measure the resistances of auxiliary electrodes H Z and S Y or if the resis tance of the electrodes is too high see 10 1 start the measurement with a long press of the START STOP button R R will be displayed eu IC EARTH O w R lh of E L al l Q R we gt 25 H L thie
11. H several measurements are made with different distances d you can store them under the same OBJ TEST number with the distance as third addressing criterion It will be possible to overwrite values already stored with new ones having the same distance d or even to add new results having other values for the distance d provided that all of the other measurement parameters are identical 7 2 Recalling Measurements from Memory To recall saved measurements perform the following e Select a measurement function then press the 2 and MR buttons e Use the gt and A Y buttons to choose the OBJ and TEST numbers e Press the DISPLAY button to display the time tiME and date dAtE e Press DISPLAY again to display the measurement and its parameters e Press the MR button again to exit the recall mode If there are saved results in SWEEP mode the frequency will be displayed as a third address parameter below the OBJ TEST number selected Use the and A Y buttons to select different frequencies The SET UP function lets you read all memory addresses one after the other independently of which measurement function is chosen Any measurement stored in the tester can be retrieved individually using Data View software see 8 7 3 Erasing Measurements from Memory There are two ways to erase measurements complete and selective 7 3 1 Erasing All Measurements e Set the switch to SET UP e Push once on the MEM button to display the
12. used for resistivity measurement measuring lead compensation resistance S Y terminal reference potential socket for calculating earth resistance external voltage currently present on the instrument terminals voltage measured between terminals H and E voltage generated by the instrument between terminals H and E 32V or 16V voltage measured between terminals S and E voltage measured between terminals S and ES frequency chosen by the user from the English user voltage of terminal S compared with E expressed as a relative value rEL value without unit ground potential measurement ground resistivity measured according to the Schlumberger method expressed as Q m ground resistivity measured according to the Wenner method expressed as Q m 1 The suffix Act becomes In for Input in English when this value is recorded by the instru ment and then read to make a distinction between the current and recorded values In both cases this value on the display is associated with its frequency 2 In this case the resistances of the 4 stakes used for measurement are indicated by HR R R P ES 86 Ground Resistance Tester Model 6472 Repair and Calibration To ensure that your instrument meets factory specifications we recommend that it be scheduled back to our factory Service Center at one year intervals for recalibration or as required by other standards or int
13. 2 2cts Operating error 5 5cts 3 2 5 AC Earth Resistance Measurements Measuring Method Voltage Current measurement EN 61557 part 5 Open circuit voltage 16 or 32Vrms square wave if current gt 240mA the output voltage is reduced to 10Vrms Test frequency Selectable from 41 to 5078Hz see table in 6 2 Short circuit current gt 200mAAc Noise suppression gt 80 dB for frequencies 20 or more above or below the test frequency Max overload 250Vrms Max value for R AR 100kQ Measuring time Short push on START approx 7 s for first value of R at 128Hz then 3 measurements per s Long push on START approx 15 s for first value of R at 128Hz then 3 measurements per s The following error indications refer to reference conditions with a test voltage of 32V test frequency of 128Hz R and R 1k no external voltage The operating error of AC resistance measurements can be less than that speci fied for voltage or current because frequency characteristics of the voltage channel are matched to those of the current channel Measurement of auxiliary electrodes R R RR Measurement 0 14 to 10 0 to 100 to 1 00 to 10 0 to Range 9 99Q 99 90 9990 9 99kQO 99 9kQ Resolution 0 102 0 102 10 10Q 100Q Operating error 10 2cts The START button must be pressed for more than 2 s For frequencies between 41 and 256Hz the resistance of the auxiliary earth electr
14. 3 4 20mm in diameter 1 Set the switch to eal 2 Place electrodes H Z and S Y at least 30m 98 ft apart so that there is no interference between them Og op a HZ sw lt lt 30m8 gt 30m 98 fi KR H Rg Res Res H z Z In order to avoid electromagnetic interference it is best to unwind the full length of each cable from the reel to keep the cables as far apart as possible on the ground taking care not to form loops and to avoid placing the cables near or parallel to metallic conductors cables rails fences etc 3 Connect the cables to terminals H Z and S Y connect a cable between terminal E X and the earth electrode under test then connect the clamp to terminal ES Xv The device recognizes it automatically 4 Clamp to the path of the earth electrode to be checked then connect a lead Ground Resistance Tester Model 6472 37 from the current clamp to this same point connection to terminal ES XV Take care not to place the cable of electrode H Z too close to the current clamp in order to avoid any transmission of the AC signal to the clamp espe cially when using an MN82 clamp Start the measurement by pressing the START STOP button MT R del II GCE il e Us im Rea Rey LI Se LD H E mus ath D gt gt a LI T 3 START STOP You can now move the clamp and its lead to measure the other earth resist a
15. 50 6 4 2 Earth Ground Coupling Measurements AA 50 6 5 4 Pole Earth Ground Measurements AA 52 6 6 Soil Resistivity Measurement AA 52 6 7 Earth Ground Potential Measurements A 52 6 8 Measurements with Two Clamp cceesceeeesceeeseeeeeeneeeseeeeeeenaeeeneas 52 DH SWEEP MOJE wiiiseissiiie dai tee ete iaa iani 53 EBI Muert Une DEE 53 Ground Resistance Tester Model 6472 7 MEMORY FUNCTION sssssssnsnnsnunnnnununnnnnnnununnnnunnnnnnnnnnnnnnunnnnnnnnnnnnnnn 54 7 4 Saving Measurements into Memonm ee eeeeeeeceeneeeenteeeeenaeeeeeeees 54 7 2 Recalling Measurements from Memory 2 ccceceeeeecteeeeeeeenteeeees 55 7 3 Erasing Measurements from Memory sssrin 55 7 3 1 Erasing All Measurements cc eceeeeeeeeeeeeeeeeeneeeeenaeeeeenees 55 7 3 2 Erasing Selective Measurements ecceccneeeeee 56 8 DATAVIEW SOFTWARE io isiincsicdicsnccerecedeceusecucsderedscuncacecncstavdesadecess 57 8 1 Installing Datavlewf sensi eeretntnennnnsrntnsrnnnsrennsnsnnnnnnn 57 8 2 Connecting the Model 6472 to your Computer 60 8 3 Opening the Ground Tester Control Panel 61 8 3 1 Establishing Communication to the Instrument 62 8 4 Configuring the Instrument 62 8 4 1 DC Continuity jeet 63 8 4 2 3 Pole Ground Resistance Test 64 8 4 3 4 Pole Ground Resistance rn 65 8 4 4 3 Pole Plus Clamp Resistance cc ceseesssee 66 8 4 5 4 Pole Soil Resistivity r 67 E 68 8 4 7 Ground LOOP R a aoe ee et 69 EE EE ee ere 70 e Leen TEE EE 71 8 5 1 lee OPptlO
16. Pole resistance measurements By default the visual alarm ALARM symbol flashes and the audible alarm buzzer sounds for a few seconds are triggered when R lt 2Q This threshold can be changed using the SET UP function SL ki 1 gt _ gt lt 2 Ly 7 ALARM pad L Q Turn the alarm Access the Choose a low lt or ON or OFF type of alarm high gt alarm A gt A Set the value of the alarm Complete the adjustment between 1 and 9999 of the alarm setting x3 gt and A DISPLAY 30 Ground Resistance Tester Model 6472 5 3 Resistance Measurement mQ 4 Wire This measurement is used to improve the resolution 10x better than the 2 Wire measurement for weak resistance values To perform a 4 Wire measurement Press HzZ OPTIONS Press Hz OPTIONS once again AUTO will blink H and E will blink OS OS Hz OPTIONS Hz OPTIONS Press gt Confirm choice by pressing H S ES and E will all blink gt Hz OPTIONS again Hz OPTIONS sl les OS A WARNING Before performing the resistance test verify that the sample under test is not energized 1 Set the switch to ma 1 2 Connect the resistance to all 4 terminals Ground Resistance Tester Model 6472 31 3 Start the measurement by pressing the START STOP button eu DI SEET Yamuna Lei ALARM E Lk H o en ge START STOP 4 To display the measurement parameters press DISPLAY several times The d
17. Reporting 10 1 1 Electrode Resistance Too High This can happen in a 3 or 4 pole earth measurement a resistivity measurement or an earth potential measurement This message is displayed when the measurement is triggered by a short press of the START STOP button and the resistances of the auxiliary electrodes are too high The measurement must then be started by a long press on the START STOP but ton The device then measures the values of the electrodes and compensates for them to display the correct result 10 1 2 Out of Range See lr The flashing gt or lt symbol indicates the measurement is pee ou Out of range If both symbols flash together it means that the accuracy of the value displayed is outside of the instrument specification or is subject to large fluctuations Activating SEN the smoothing function SMOOTH may correct this Press the 2nd button then the SMOOTH button to activate smoothing 10 1 3 Misconnection ly Vly vty 1 This flashing indicates that a terminal or a ZO ES lt current clamp needs to be either connect tl vis E ik ed or disconnected You must correct the connections or the measurement will not proceed The flashing of terminal H may also indicate that current l is too low The flashing of terminal S may also indicate that resistance R is too high The flashing of terminal ES may also indicate that the cur rent l measured by the clamp is too low Ground Resist
18. SWEEP Mode For 4 pole earth measurements without clamp selective with clamp or with the GroundFlex it is possible to select the frequency sweep mode SWEEP Press the HzZ OPTIONS button then the button The device then displays the first free memory location OBJ TEST in which to store a series of measurements with a series of preset frequencies The device makes a measurement at each of the following frequencies 41 64 92 128 256 513 1025 1465 2051 2539 3125 3516 4102 4687 5078 These SWEEP frequencies are factory defaults preset in the memory The user can change them by configuring the tester using DataView software 6 10 Smoothing In the manual mode you can activate or deactivate the smoothing of the measure ment results by pressing the 2nd DISPLAY SMOOTH buttons This smoothing consists in displaying an exponential mean value a significant help with highly fluctuating values Ground Resistance Tester Model 6472 53 CHAPTER 7 MEMORY FUNCTION The device has a total of 512 memory locations Each of these locations is defined by an object number OBJ from 01 to 99 and by a TEST number from 01 to 99 For 3 and 4 pole earth measurements and for measurements using the Ground Flex the sweep mode SWEEP can record several measurement results at the same memory location with the frequency as third addressing criterion During soil potential or resistivity measurements Wenn
19. errors make operation of the unit impossible Turn off the unit and turn it on again If the error persists repair is necessary Ground Resistance Tester Model 6472 APPENDIX A GLOSSARY GLOSSARY OF TERMS Basic Terminologies Explanations for some of the basic terms related to earth measurements follow Auxiliary electrode H Z A supplementary electrode through which a measurement current flows Earth conductor The conductor which connects the installation to be earthed to the earth elec trode Earth connection A locally restricted group of electrically connected earth contacts It also in cludes metal parts of installations such as pylon footings bracings cable sheathing and earth conductors Earth electrode E X A conductor which is buried in the earth and makes electrical contact with it Earth potential The potential difference measured between the earth connection and a refer ence earth electrode Earth electrode ES Xv A connection on the earth electrode or earthing system used for measuring the potential of the earth electrode Earth resistance The resistance measured between the earth connection and a reference earth electrode cf selective earth resistance Earth The location of an earth connection see also reference earth Earthing system The set of all installations connected to the earth Electrode S Y An auxiliary electrode used for measuring the potential of the reference ea
20. for R AR 100kQ Measuring time Short push on START approx 7 s for first value of R at 128Hz then 3 measurements per s Long push on START approx 15 s for first value of R at 128Hz then 3 measurements per s Measurement Range 0 00 to 99 99mV 100 0 to 999 9mV 1 000 to 9 999V 10 00 to 65 00V Resolution 0 01mV 0 1mV ImV 10mV Intrinsic error U 5 1ct The intrinsic error specified refers to reference conditions with a test voltage of 32V test frequency of 128Hz R and R 1kQ no external voltage Operating conditions R lt 3xR and Operating error for U R R Freq Hz U P e SE D 1 3kQ 41 to 512 lt 3mV 10 10cts lt 1kQ A to 5078 gt 3mV 41 to 1025 5 Acts 3 to 60kQ 1 to 3kQN 41 to 512 10mV SE 3 to 10kQ 41 to 128 Note With a test voltage Uu of 16V halve the value for R 22 Ground Resistance Tester Model 6472 3 2 8 Earth Ground Measurements with 2 Clamps Measuring method Voltage Current measurement with a rectangular AC signal Induced short circuit current lt 26Arms with SR182 lt 5Arms with MN82 Signal frequency Automatic 1611Hz Manual 128 1367 1611 or 1758Hz Noise suppression gt 80 dB at frequencies differing by 20 or more from the test frequency Max interfering current 20A ea Max value for R R 100kQ k Measuring time approx 7 s for the first value of Roop then 3
21. lugs one 100 ft AEMC tape measure carrying bag Test Kit for 4 Pole 4 Point Testing 300 nm Cat 2135 36 Includes two 300 ft color coded leads on spools red blue two 100 ft color coded leads hand tied green black two 5 ft color coded leads red blue four T shaped auxiliary ground electrodes set of five spaded lugs one 100 ft AEMC tape measure carrying bag Test Kit for 4 Pole 4 Point Testing 500 nm Cat 2135 37 Includes two 500 ft color coded leads on spools red blue two 100 ft color coded leads hand tied green black one 30 ft lead green two 5 ft color coded leads red blue four T shaped auxiliary ground electrodes set of five spaded lugs one 100 ft AEMC tape measure carrying bag Test Kit for 3 Pole 3 Point Testing Supplemental for 4 Pole 4 Point Testing reenen Cat 2135 38 Includes two 100 ft color coded leads hand tied green black one 30 ft lead green two T shaped auxiliary ground electrodes set of five spaded lugs one 100 ft AEMC tape measure carrying bag 8 Ground Resistance Tester Model 6472 Extra Large Classic Tool Bag Cat 2133 73 Tape Measure AEMC OO Cat 2130 60 Ground Tester DVD Workbook Get Cat 2130 64 Set of two 14 5 T shaped Auxiliary Ground Elechodes Cat 2135 39 Replacement Carrying Bag for Model 6470 6472 eee Cat 2135 40 Optical USB Cable tee n eiiie eteesi Cat 2135 41 Inverter 12V DC to 120V AC 200 Watt for vehicle use C
22. meas per s Measurement Range 0 10 to 9 990 10 0 to 99 90 100 to 5000 Measurement frequency 1367Hz 1611Hz 1758Hz Resolution 0 010 0 190 10 Operating error OI SR182 10 1cts without external current MN82 20 2cts Measurement Range 0 10 to 9 990 10 to 300 Measurement frequency 128Hz Resolution 0 019 0 190 Operating error SAUER 20 2cts without external current MN82 not specified 1 Observe the minimum distance between the two clamps according to table in 5 8 3 3 Data Storage Memory Capacity 512 test results 64kB Communication Optically isolated USB 3 4 Power Power Source Rechargeable 9 6V 3 5Ah NiMH Battery Pack Power Supply 110 220 50 60Hz external charger with 18Vpc 1 9A output or 12VDpc vehicle power Fuse 0 63A 250V 5x20mm 1 5kA Ground Resistance Tester Model 6472 23 Battery Life Function Power consumed Typical number of measurements Device off lt 5 mW Voltage Measurement 1 5W 4500 mo 2 4 9 W 1500 3 Poles 4 Pole 4 9W 1500 p 4 9 W 1500 V pot 4 9W 1500 2 Clamps 3 7 W 2000 GroundFlex 5 5W 1200 1 Measurements in automatic mode at 25 s intervals In sweep mode the number of measurements is divided by 3 or 4 2 With R 10 3 With RH RE 100Q 4 With RH RS ES 100Q 3 5 Mechanical Dimensions 10 7 x 9 76 x 5 12 272 x 248 x 1
23. number of free and available records e Push a second time on the MEM button Ground Resistance Tester Model 6472 55 e The display will show AEL ALL Change the blinking NO to YES with the A button then perform a long press gt 2s on the MEM button Ab WARNING This will delete ALL saved records s To exit without erasing perform a short press on the MEM button 7 3 2 Erasing Selective Measurements e Set the switch to SET UP e Hold down the 2 button then press the MR button e Select the desired measurement using the gt and A V buttons e The display will show dEL Change the blinking NO to YES with the A button then perform a long press gt 2s on the MEM button e To exit without erasing perform a short press on the MEM button 56 Ground Resistance Tester Model 6472 CHAPTER 8 DATAVIEW SOFTWARE 8 1 Installing DataView DO NOT CONNECT THE INSTRUMENT TO THE PC BEFORE INSTALLING THE SOFTWARE AND DRIVERS we Minimum Computer Requirements e Windows XP Windows Vista amp Windows 7 32 64 bit e 256MB of RAM for Windows XP 1GB of RAM for Windows Vista amp Windows 7 32 bit 2GB or RAM for Windows Vista amp Windows 7 64 bit e 80MB of hard disk space 200MB recommended e CD ROM drive Windows is a registered trademark of Microsoft Corporation in the United States and other countries NOTE When installing the user must have Administrative access rig
24. that was included with the instrument 4 1 General Operating Instructions The Model 6472 has operating modes e Automatic mode for routine applications e Manual Expert mode in which the user can change the parameters of the measurement functions AN NOTE Fully charge the battery before the first use see 9 4 4 1 1 Automatic Mode e Get the switch to the desired function e Make the connections appropriate to the function e Press the START STOP button The device makes the measurement and stops automatically s Read the measurement result on the display and the relevant parameters using the DISPLAY button s To save the information in memory use the MEM button see 7 1 4 1 2 Manual Expert Mode e Set the switch to the desired function e Make the connections appropriate to the function e Select MANUAL mode Choose various measurement parameters using the HZ OPTIONS button e Press the START STOP button The measurement frequency or the direc tion of the current resistance measurement can be changed during the measurement To view their impact upon the measurement and the param eters relevant to the measurement use the DISPLAY button 26 Ground Resistance Tester Model 6472 e When the measurement results are acceptable stop the measurement by pressing the START STOP button e View the result on the display and toggle through the relevant parameters using the DISPLAY button To record the informat
25. the process of configuring running retrieving data and printing a report using DataView with your Model 6472 A In addition to the pre designed report templates DataView allows you to totally configure reports to your needs Refer to the DataView HELP file on Templates to learn more about templates Ground Resistance Tester Model 6472 73 CHAPTER 9 MAINTENANCE 9 1 Maintenance AN Please make sure that you have read and fully understand the WARNING section on page 3 e To avoid electrical shock do not attempt to perform any servicing unless you are qualified to do so To avoid electrical shock and or damage to the instrument do not get water or other foreign agents into the case e Turn the instrument OFF and disconnect the unit from all circuits before opening the case e Use specified spare parts only 9 2 Cleaning AN Disconnect the instrument from any source of electricity Use a soft cloth lightly moistened with soapy water Wipe with a moist cloth and then dry with a dry cloth Never use alcohol solvents or hydrocarbons 9 3 Fuse Replacement The unit is protected from overloads by two identical fuses e Fuse for terminal H Z If this fuse is defective the unit will no longer produce an output voltage making it impossible to perform resistance measurements To test this fuse turn the switch to the mA position 2 Wire connect measurement leads to terminals H Z and E X and start a
26. to 240Vac power source suitable for Europe and the U S The frame of the battery symbol will blink during charging Charging goes faster when the tester is turned off The bat tery voltage is shown on the large display next to Ubatt 76 Ground Resistance Tester Model 6472 At the middle and bottom of the display you will see one of the following mes sages bAtt CHrG Fast charging is active normal state bAtt LOW Battery voltage is too low for a fast charge charging at a lower current bAtt Battery voltage is too high for a fast charge charging at a lower current bAtt HOt Battery is too warm for a fast charge gt 40 C charging at a lower current bAtt COLd Battery is too cold for a fast charge lt 0 C charging at a lower current bAtt FULL Battery is full switch to trickle charging The 6472 tester can also be recharged from a 12Vpc car outlet with a special charging unit AN NOTE In this case the low potential of the vehicle s 12V outlet is at the po tential of terminals E X and ES Xv of the ground tester For safety reasons do not connect or use the unit if there is a possibility that voltages at E X or ES Xv could exceed 32V 9 5 Replacing the Battery The battery in this unit is a special product with customized safety features and protective devices It should be replaced only by the same model If a different model is used there is a danger of fire or explosion leading t
27. will appear with a graph of the data and some viewing or channel options In that window you can select Create DataView Report Create Spread sheet or Print Ground Resistance Tester Model 6472 71 5 Also from the Instrument tree view expand the sections under Recorded Data from the instrument then click on a line that describes the re corded data It will bring up a window with a graph of the data 8 7 1 Recordings ad Pel Pae CO be wees Prat M ee ree Eet 124 HI S LA DIS EIAN Tires LAN ar OF Od r te mar Om Marthe EMT WR fe ER es H WOK es mp ten ER Des L Die SEPT Tee OAR w d PRAA 95 fue MT x D JOMA gei F e DN gu Dar 2 5 KO Hi 34019 d SZ t UA F 0009 DI HEM ne Oh Chee shad bes Han Ow Im at labie A Give E Meh tre ny Lo pny rem 1rHiYAC ever Fave gg Crate eet Feat Figure 8 14 8 7 2 Session Properties After creating a DataView report you can open the Session Properties dialog box by selecting Edit gt Edit Session Properties Seszion Properties erer Site Gator Operators bt Operator Company AdS ess Or State Peis SSC Bes Fax rmt een ry Cancel mb Figure 8 15 72 Ground Resistance Tester Model 6472 The Session Properties dialog allows you to specify Operator Site and Custom parameters that are to be saved with recorded data These parameters are used when generating reports The Op
28. 1 64 67 69 73 79 82 85 92 98 101 110 119 122 128 134 137 146 159 165 171 183 195 201 220 238 244 256 269 275 293 317 330 342 366 391 403 439 476 488 513 537 549 586 635 659 684 732 781 806 879 952 977 1025 1074 1099 1172 1270 1318 1367 1465 1563 1611 1758 1904 1953 2051 2148 2197 2344 2539 2637 2734 2930 3125 3223 3516 3809 3906 4102 4297 4395 4688 5078 There are two user frequencies one for resistivity and one for earth and soil po tential measurements These two values remain in memory even after the device is switched off For soil resistivity measurements the user frequency is limited to 128 Hz 6 3 Manual Settings for mO Measurements Pressing HzZ OPTIONS in MANUAL mode allows the following parameters to be changed using the button e Terminal symbols H and E blink gt H S ES E blink 4 Pole measurement e POS on H and DC blinks gt neg on H and DC reversal of polarity at terminal H In MANUAL mode the tester does not reverse polarity automatically during the measurement however the polarity can be reversed during the measurement by pressing the HZ OPTIONS button Ground Resistance Tester Model 6472 49 6 3 1 Continuity Test The 2 wire mQ measurement gives a quick measurement result accompanied by an audible beep during a con
29. 30mm Weight 7 lbs 3 2kg approx Case Material ULVO Polypropylene Terminals 4mm recessed banana jacks Case Protection EN 60529 IP53 cover closed Drop Test Per EN 61010 1 Vibration Test Per EN 61557 1 3 6 Environmental Operating Temperature 32 to 113 F 0 to 45 C 0 to 90 RH Specified Operating Temperature 0 to 95 F 0 to 35 C 0 to 75 RH Storage Temperature 40 to 158 F 40 to 70 C 0 to 90 RH Altitude lt 3000m 1 This range corresponds to the one defined by standard EN 61557 for which an operating error including the quantities of influence is defined When the device is used outside this range 1 5 10 C and 1 5 between 75 and 90 RH must be added to the operating error 24 Ground Resistance Tester Model 6472 3 7 Safety Electromagnetic Compatibility This instrument satisfies the EMC and LVD directives required for the CE marking and product standard IEC 61326 1 Ed 97 A1 Ed 98 e Immunity in industrial environment e Emissions in residential environment Electrical safety according to EN 61010 1 Ed 2 of 2001 Measurement according to EN 61557 Ed 2 of 2007 parts 1 4 and 5 CAT IV 50V Pollution Degree 2 Specifications are subject to change without notice Ground Resistance Tester Model 6472 25 CHAPTER A OPERATION A NOTE For detailed information regarding ground resistance testing see the Understanding Ground Resistance Testing Workbook CD
30. 434 Ext 360 Fax 603 742 2346 or 603 749 6309 E mail repair aemc com Caution To protect yourself against in transit loss we recommend you insure your returned material NOTE You must obtain a CSA before returning any instrument 88 Ground Resistance Tester Model 6472 AEMG INSTRUMENTS 05 12 99 MAN 100325 v8 Chauvin Arnoux Inc d b a AEMC Instruments 15 Faraday Drive Dover NH 03820 USA Phone 603 749 6434 Fax 603 742 2346 www aemc com
31. 87 Limited Warranty The Model 6472 is warranted to the owner for a period of one year from the date of original purchase against defects in manufacture This limited warranty is given by AEMC Instruments not by the distributor from whom it was pur chased This warranty is void if the unit has been tampered with abused or if the defect is related to service not performed by AEMC Instruments Full warranty coverage and product registration is available on our website at www aemc com warranty html Please print the online Warranty Coverage Information for your records What AEMC Instruments will do Ifa malfunction occurs within the one year period you may return the instrument to us for repair provided we have your warranty registration information on file or a proof of purchase AEMC Instruments will at its option repair or replace the faulty material REGISTER ONLINE AT www aemc com Warranty Repairs What you must do to return an Instrument for Warranty Repair First request a Customer Service Authorization Number CSA by phone or by fax from our Service Department see address below then return the instrument along with the signed CSA Form Please write the CSA on the outside of the shipping container Return the instrument postage or shipment pre paid to Ship To Chauvin Arnoux Inc d b a AEMC Instruments 15 Faraday Drive Dover NH 03820 USA Phone 800 945 2362 Ext 360 603 749 6
32. AUTO will blink su OC ep E Lu a e CU H 23 D Hz CH CONFIG AUTO Hz OPTIONS a Deng A Press the Hz options button again W will blink 4 Press the gt button to change to the Schlumberger method 5 To confirm and exit press the Hz opTions button twice em mT e DCH Pw Js U Sie re U 337 6 ot JE ei ot JE x2 H n q Hz Hz Q m 2 o am 90 O Hz oPTIONS See SS gt TS Ae Hz oPTIONS To switch back to the Wenner method simply repeat this procedure The last measurement method selected Wenner or Schlumberger is stored in memory when the device is switched off 5 6 3 Programming the Distance for Electrode Placement The distance can be programmed before or after the measurement If it is not programmed only the value of R s will be displayed since the value of p remains indeterminate 1 Set the switch to P 2 Press the 2nd button then the DISTANCE button The hundredths will blink 40 Ground Resistance Tester Model 6472 eo WC Pw 2 e e we Om Q DISTANCE ses je Sim AUTO wm e wm 2rd DISTANCE 3 To modify the hundredths of meters or feet press the A button until the desired digit is displayed 0 9 4 To select and modify the tens press the gt button and then the A button until the desired digit is displayed 0 9 5 To select and modify the units and te
33. Fie AV lest VoRage Line gt Werner k Zatlnat sngt ech bem AL amp Pile werge Fiho Die Ert O d 4 Meter Irou Nowe Show Z input Show Y irpu VYX TYD Figure 8 10 Ground Resistance Tester Model 6472 67 8 4 6 Ground Potential When Ground Potential is selected from the tool bar you can select e With or without Auxiliary Rod Resistance e Test voltage 16 or 32Vac e Distance d from terminal X to terminal Y e Distance a from terminal X to terminal Z e Auto frequency selects the optimum frequency from 41 to 5078Hz usually 128Hz or select manually from the drop down frequency list Selecting a sweep frequency test from the drop down list will bring you to the sweep table selection The Input Noise option allows the viewing of noise for Z or Y inputs Configuerten Wo Vaz Lost Fann Te Withond Aus Red Rezstarce gt Ado Fretaerer e Save To Fie IV Teni Votage Law e Set iraient Clock Burze Ground Paerd Die Enabled H Mate A Heite rend Hone KM H Show Y gad VYX 00000 DC Figure 8 11 68 Ground Resistance Tester Model 6472 8 4 7 Ground Loop R This mode can only be selected when there are current probes connected to the Z and Xv terminals When Ground Loop R is selected from the tool bar you can select e Auto frequency selects the optimum frequency from 1367 to 1758Hz usually 1367Hz or select manually from the drop down frequency list Configuerten Lead Faon F
34. HM DIGITAL GROUND RESISTANCE AND SOIL RESISTIVITY TESTER AEMC INSTRUMENTS User Manual Statement of Compliance Chauvin Arnoux Inc d b a AEMC Instruments certifies that this instrument has been calibrated using standards and instruments traceable to international standards We guarantee that at the time of shipping your instrument has met its published specifications An NIST traceable certificate may be requested at the time of purchase or obtained by returning the instrument to our repair and calibration facility for a nominal charge The recommended calibration interval for this instrument is 12 months and begins on the date of receipt by the customer For recalibration please use our Calibration services Refer to our repair and calibration section at www aemc com Serial Catalog Model 6472 Please fill in the appropriate date as indicated Date Received Date Calibration Due Chauvin Arnoux Inc B d b a AEMC Instruments INSTRUMENTS www aemc com A READ CAREFULLY BEFORE USING FOR THE FIRST TIME Your instrument is equipped with a NiMH battery This technology offers several advantages e Long battery charge life for a limited volume and weight e Possibility of quickly recharging your battery e Significantly reduced memory effect you can recharge your battery even if it is not fully discharged Respect for the environment no pollutant
35. Ms irion eie 71 8 5 2 TOONS gt Colors arinina en a R es 71 8 5 3 Tools gt Recover Data 71 8 6 Starting a Test c04wa ee aa A a ath 71 8 7 Downloading Data to Database A 71 GEN lte le EE 72 8 7 2 Session Properties ssrt oani a etenei 72 8 8 Exporting the Report to a PDF Pie 73 9 MAINTENANCE ssssssssunsnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnna 74 9 1 Maintenance EEN 74 GEN e ETTA e DEE 74 93 Fusebeplscerment ze NENNEN Ae 74 9 4 Recharging the Battery eee eeeeee eset eeeeneeeeenaeeeeeeeeeeneeeeeaaes 76 95 Replacing the Battery Ase net e e a eas 77 Ground Resistance Tester Model 6472 APPENDIX A TROUBLESHOOTING usteet veEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE 79 10 1 Erorkeeortmg incite che i AEN 79 10 1 1 Electrode Resistance Too Hab 79 101 2 Outiot lee EE 79 10 13 MISCONNECHON ek ities snide eee 79 10 1 4 Out of Limits Indicators ccccceecceeeeeeeeeeeeeeeeeeeeeteeeeeeeeees 80 101 5 Error e EE ER APPENDIX B GLOSSARY OF TERMG ssscscecssseeessesssseesseessseeenes 83 Basic Terminologies ts2s2 2 lt cegesnec cine costed bikes denen etees danced seed S EE E doen 83 Daleiden E is as igs tet eee EE 84 Repair and Calbraton ped a a a a aiai 87 Technical and Sales Assistance ccccceeceecceeeeeeneeeeeeeceeeeaeceeeseenaaeeeeeeeeeneeeees 87 Limited Warranty 2c cut co 2 sexed cooeids Sant E Eege 88 Warranty R paits scccsccs seecescieeedeceneed
36. ONS 3 1 Reference Conditions 3 2 Electrical 3 2 1 Influencing Parameters Reference Values Temperature 68 F 5 5 F 20 C 3 C Relative Humidity 45 to 55 RH Power Supply 9 to 11 2V Frequency Range of Input Signal 0 to 440Hz Capacitance Parallel to Input Resistance 0 uF Electric Field lt 1 V m Magnetic Field lt 40 A m Frequency Measurements Measuring method Digital with a sampling frequency of 4028Hz low pass FFT The frequency of the strongest spectral component is displayed Measuring rate Display updates approx 3 times per s Measurement Range 5 to 450Hz Resolution 1Hz Operating error 2Hz Min input voltage 10mV Min current through a clamp 0 5mA Min signal strength for GroundFlex 5mA 3 2 2 Voltage Measurements Overvoltages up to 75Vrms are displayed as gt 65V Permanent overvoltages between 70 and 75V at terminals H Z and E X can cause overheating of the overvoltage protection varistor Voltages of more than 75Vrms lead to error message 31 excessive external voltage or 32 voltage measurement overrange If terminals H Z and E X are put into contact with the line voltage the protection fuse will blow 16 Ground Resistance Tester Model 6472 External Voltage Measurements Measuring Method Digital by sampling at 4028Hz low pass filter FFT The frequency of the strongest spectral component is displayed Measuring Rate Displa
37. R Selective 4 Pole earth resistance measurement with SR182 or MN82 clamp Same characteristics as 4 Pole earth measurements with the following particular conditions Minimum current SR182 l gt 0 5mA MN82 l gt 2mMA Maximum RR ratio SR182 R _ R lt 500 MNB82 R R lt 120 with R R lt 209 20 Ground Resistance Tester Model 6472 3 2 6 Soil Resistivity Measurement p Measuring method Voltage Current measurement EN 61557 part 5 Open circuit voltage 16 or 32Vrms square wave Test frequency Selectable from 41 to 128Hz see table in 6 2 Short circuit current gt 200mAAc Noise suppression gt 80 dB for frequencies 20 or more above or below the test frequency Max overload 250Vrms Max value for R R Res Rp 100kQ Calculation formula Wenner p 2x d R ES S ES Calculation formula Schlumberger p x d2 A 2 A R GES Maximum value of p 999kQm display in kOn is not possible Measuring time Short push on START approx 8 s for first value of R s at 128 Hz then 3 measurements per s Long push on START approx 20 s for first value of R at 128 Hz then 3 measurements per s Measurement 0 00 to 10 0 to 100 to 1 00 to 10 0 to Range 9 99Q 99 90 9990 9 99kQ 99 9kQ Resolution 0 010 0 10 IO 10Q 1000 Intrinsic error 2 1ct The intrinsic error specified refers to reference conditions with a test voltage of 32V test frequen
38. ae Asdo Frequency e Save To Fie Set kenge Clock Burze Dr gie Enabled 8 7 2 Clanpe Hil West Hose ESTELLA Figure 8 12 Ground Resistance Tester Model 6472 69 8 4 8 GroundFlex AN NOTE This option is only available when there is a GroundFlex Adapter connected to the 6472 When GroundFlex is selected from the tool bar you can select e With or without Auxiliary Rod Resistance e Test voltage 16 or 32Vac e Auto frequency selects the optimum frequency from 41 to 128Hz usually 128Hz or select manually from the drop down frequency list e Number of turns of the GroundFlex around the connector e Aninput sensitivity for the GroundFlex Choice is 0 1 1 or 10 0 If the value is too high the test will show Overloaded inputs If that happens try again with a lower sensitivity e Input selection Indicates which GroundFlex is connected to the 6474 Selecting a sweep frequency test from the drop down list will bring you to the sweep table selection The Input Noise option allows the viewing of noise for Z or Y inputs ES Configuration co es Long free Fie Weg Aun Rod Hesse lt Auto Frequency Saree To Fia I V Test Voltage Lint gt Geoundtliee 4 Tune gt Sat lnatasewet Chock Bee Dn gie Eratied Germ inp Noire Show Z reg Show Y inou 8 Setup Step Takia VYX HUDD OC 1 ed Clamp G4 Le Figure 8 13 70 Ground Resistance Tester Model 6472
39. ance Tester Model 6472 79 To reduce R you can add one or more electrodes 2 meters apart from each other in the H Z leg of the circuit or increase the test voltage To reduce R you can add one or more electrodes 2 meters apart from each other in the S Y leg of the circuit To reduce the resistance of the electrodes you can also drive them deeper pack the ground around them well or dampen them with water 10 1 4 Out of Limits Indicators oe This flashing during a passive measurement means that the device Ab has detected the presence of an external voltage exceeding 42V on the terminals and that the measurement is impossible frx A This flashing during an active measurement means that the operat ing limits have been exceeded If this symbol remains lit during an active measurement it means that the values measured are subject to large fluctuations or that there is an incorrect connection NOISE The display of an indefinite value for a passive measurement indi cates that measurement current I_ Or l or voltage U is too low The display of the NOISE symbol indicates that a stray external voltage is likely to interfere with the measurement You should change to manual mode and change the measurement voltage and or frequency in order to make a valid measure ment After the measurement has started there are indicators of when e Values H and or R are too high e Measurement current le les Or Ig is too low
40. at 2135 43 AC Current Probe Model MN Cat 2135 71 AC Current Probe Model RIDE Cat 2135 72 Replacement Connection Lead for Models 6472 6474 Cat 2135 75 Replacement Fuse set of 5 0 63A 250V 5x10 1 kA Cat 2135 81 Replacement Calibration Loop Cat 2135 82 Safety Alligator Clip Black Rated 600V CAT IV 108 Cat 2140 53 Safety Alligator Clip Green Rated 600V CAT IV 10A Cat 2140 69 Replacement Battery Rechargeable NiMH 9 6V eneee Cat 2960 21 Replacement Power Adapter 110 240V amp Power Cord 115V US Cat 5000 13 Replacement Power Cord 115V US Plugin Cat 5000 14 NOTE The GroundFlex Adapter Model 6474 is a factory supplied product only Order Accessories and Replacement Parts Directly Online Check our Storefront at www aemc com store for availability Ground Resistance Tester Model 6472 9 CHAPTER 2 PRODUCT FEATURES 2 1 Description The Ground Resistance Tester Model 6472 is a portable measurement instrument designed to measure e Bond Connection Resistance 2 Pole and 4 Pole Kelvin sensing e Ground Resistance 3 Pole or 4 Pole e Ground Coupling Resistance Selective Ground Resistance e Soil Resistivity Wenner or Schlumberger method e Ground Potential e Ground Resistance with 2 clamps no auxiliary rods e Ground Resistance of Pylons with the GroundFlex Adapter Model 6474 and GroundFlex sensors allow the system to measure leakage current and ground resis
41. ble el Warning buzzer is activated Ground Resistance Tester Model 6472 13 A blinking symbol gt greater than or lt less than indicates that the measurement range is exceeded If both symbols are blinking during a passive measurement the values of voltage and or current are too small and are beyond the limits of use The gt 0r lt resistance Rpass displayed by the tester is then highly uncertain If both symbols are blinking during an active measurement the values to be measured are strongly varying remedy switch on smoothing of measured values with SMOOTH function Indicates the battery charge condition the segments represent the energy EARTH Indicates whether the 3 Pole EARTH measurement or the EARTH COUPLING COUPLING measurement has been selected S x 1 10 Indicates the sensitivity of the GroundFlex x1 10 x1 x10 000 Display of the number of turns in GroundFlex sensors 1 to 4 Number of GroundFlex sensors connected 1 to 4 If this symbol blinks ba the GroundFlex may not be connected or the current ISEL measured by the GroundFlex sensor is too small and is outside the limits of use OBJ TEST Object and test number for storage in memory Indicates lead compensation for 2 Pole measurement is active If blinking indicates the value is ready to be overwritten with a new value DISTANCE or that a new value will be entered If more than one va
42. carrying bag for meter carrying bag for kit and a user manual Ground Resistance Tester Model 6472 Kit 300 ft 0 Cat 2135 53 Includes meter rechargeable NiMH batteries optical USB cable power adapter 110 240V with power cord 115V US two 300 ft color coded leads on spools red blue two 100 ft color coded leads hand tied green black two 5 ft color coded leads red blue four T shaped auxiliary ground electrodes set of five spaded lugs one 100 ft AEMC tape measure DataView software ground tester workbook CD carrying bag for meter carrying bag for kit and a user manual Ground Resistance Tester Model 6472 Kit 500 ft Cat 2135 54 Includes meter rechargeable NiMH batteries optical USB cable power adapter 110 240V with power cord 115V US two 500 ft color coded leads on spools red blue two 100 ft color coded leads hand tied green black one 30 ft lead green two 5 ft color coded leads red blue four T shaped auxiliary ground electrodes set of five spaded lugs one 100 ft AEMC tape measure DataView software ground tester workbook CD carrying bag for meter carrying bag for kit and a user manual 1 4 1 Kits Accessories and Replacement Parts Test Kit for 3 Pole 3 Point Testing 150 ft 00 ee Cat 2135 35 Includes two 150 ft color coded leads on spools red blue one 30 ft lead green two 5 ft color coded leads red blue two T shaped auxiliary ground electrodes set of five spaded
43. cy of 128Hz Row Rog Ries and Roe 1kQ no external voltage Operating conditions R lt 3xR and Operating error for R electrode R IR lt 10 000 electrode S ES 7 R lt 100kQ electrode D D Rerectrode Rss lt 2000 Rea lt 50KQ 15 3cts R lt 10KQ electrode R IR lt 20 000 electrode S ES 7 20 1ct Roa cal is the resistance of the earth rods R DEI R R DES DEI R assumed to be identi p Note With a test voltage U ur of 16V halve the value of Rpa Ground Resistance Tester Model 6472 21 Measurement of auxiliary electrodes Row Ros Ropes Rp Measurement 0 14 to 10 0 to 100 to 1 00 to 10 0 to Range 9 99Q 99 9 9990 9 99kQO 99 9kQ Resolution 0 102 0 102 10 10Q 100Q Operating error 10 2cts The START button must be pressed for more than 2 s For frequencies between 41 and 128Hz the resistance of the auxiliary earth electrodes is measured at the test frequency set At higher frequencies the resistance is measured at 128Hz 3 2 7 Earth Ground Potential Measurements V Pot Measuring method Voltage Current measurement Open circuit voltage 16 or 32Vrms square wave Test frequency Selectable from 41 to 5078Hz see table in 6 2 Short circuit current gt 200mAAc Noise suppression gt 80 dB for frequencies 20 or more above or below the test frequency Max overload 250Vrms Max value
44. del 6472 51 Press DISPLAY several times to display the following parameters EARTH COUPLING 1 R DA and frequency U lyg U In U and frequency R and R if long press of START STOP EARTH COUPLING 2 RH DA and frequency U Le U In UU and frequency R and R if long press of START STOP EARTH COUPLING 3 R 2 Up and frequency l U In U and frequency EARTH COUPLING 4 Ro C Cp R Rp U and its frequency 6 5 4 Pole Earth Ground Measurements Pressing the HZ OPTIONS button allows the following parameters to be changed using the button e 128Hz blinks gt Change the test frequency e Test voltage blinks gt Switch between 16 and 32V 6 6 Soil Resistivity Measurements Pressing the HZ OPTIONS button allows the following parameters to be changed using the button e Pw blinks Wenner method gt Switch to Ps Schlumberger method e 128Hz blinks gt Change the test frequency e Test voltage blinks gt Switch between 16 and 32V 6 7 Earth Ground Potential Measurements Pressing the HZ OPTIONS button allows the following parameters to be changed using the gt button e 128Hz blinks gt Change the test frequency e Test voltage blinks gt Switch between 16 and 32V 6 8 Measurements with Two Clamps Pressing the HZ OPTIONS button allows the following parameters to be changed using the button e 1611Hz blinks gt Change the test frequency 52 Ground Resistance Tester Model 6472 6 9
45. e Ground Resistance When 4 Pole Test Resistivity is selected from the tool bar you can select With or without Auxiliary Rod Resistance Test voltage 16 or 32Vac Auto frequency selects the optimum frequency from 41 to 5078Hz usu ally 128Hz or select manually from the drop down frequency list Selecting a sweep frequency test from the drop down list will enable the sweep table selection The Input Noise option allows the viewing of noise for Z or Y inputs amp Configurer als Load fren File Wiat Aun Hod Hemtarce gt Fate freeen ke Save Te Fie ZAV Test VoRage Leg D St Instar Doch bemm Du gie Enabled Pole Groat R trot Nowe Show Z input Show Y irpu Lat Susno Tabit Figure 8 8 Ground Resistance Tester Model 6472 65 8 4 4 3 Pole Plus Clamp Resistance Useful for testing multiple points without having to move the current and potential electrodes This option is only available when there is a current probe connected to the Xv terminal The following configuration options are available e With or without Auxiliary Rod Resistance e Test voltage 16 or 32VAc e Auto frequency select the optimum frequency from 41 to 5078Hz usually 128Hz or select manually from the drop down frequency list Current Z and potential electrodes Y are installed as in a fall of potential test Current probe and lead are both connected at the test point Multiple test points can be measured by movi
46. e displays the following parameters H cop les and its frequency l Act I and its frequency Move electrode S Y to distance d2 then reprogram the value of d and make another measurement Repeat for d3 d4 and d5 Record all of the measurements in order to be able to determine the variation of the earth potential between points H Z and E X Ground Resistance Tester Model 6472 45 5 8 Earth Ground Measurements with Two Clamps This is a quick way to measure the value of the earth NOTE Any error that occurs will be on the high side without the need of auxiliary electrodes The current clamp connected to terminal H Z applies a voltage to the circuit to be measured The value of the resulting current is determined by the impedance of the circuit to be measured The current flowing in the loop is measured using the clamp connected to terminal ES Xv The device then calculates loop resistance R oop from these quantities NOTE Use only SR182 or MN82 current clamps which are specially designed to operate with the Model 6472 1 Set the switch to Ge J 2 Connect a clamp to terminal H Z and clamp it to a point down stream from the rod under test that is a serial path to the earth 3 Connect the other clamp to terminal ES Xv and clamp it to the rod or elec trode system to be measured 2 Clamp e Observe the following minimum distances between the two clamps in order to avoid direct electromagnetic infl
47. e lower right hand corner of the Control Panel and in the Instrument window under status 8 4 Configuring the Instrument To configure the instrument perform the following steps 1 Double click the Ground Tester icon on your desktop 2 Go to Instrument gt Configure from the main menu of the Control Panel NOTE If a connection has not been previously established the Communi cation dialog box will appear see Fig 8 5 3 Once identification is complete a Configuration dialog window will appear if not already open The descriptions of the features below appear on several Configuration dialog boxes depending on the type of test selected e Load from File Retrieves stored configurations to be used in programming the instrument e Save to File Saves the current configuration This file will reside on the computer s disk drive Saving different configuration setups can be useful for future functions and tests 62 Ground Resistance Tester Model 6472 e Set Instrument Clock Updates the clock to the PC clock e Buzzer When selected buzzer is ON e Alarm When selected alarm is ON e Drop down Indicators Indicates the configuration available for each mea surement range A NOTE To set the Terminal Label markings e g H S ES E or Z Y Xv X Measurement units and Rho units go to Tools gt Options 8 4 1 DC Continuity Test When DC Continuity is selected from the tool bar you can Select a 2 or 4 Wire te
48. er Model 6472 3 The 6472 makes a measurement with a positive current R then reverses the direction of the current and makes another measurement with negative R e DC e WC e Oe eee e JEU Q L WI Q r ALARM R R ALARM Ip R 2Cu Dr eh R R IE uu cat AUTO s AUTO f START STOP 4 To display the measurement parameters press DISPLAY several times The device displays the following parameters R R U e le Une ue U Act U and its frequency and R if there is compensation for the measurement leads 5 2 1 Lead Compensation Measurement Lead compensation subtracts the resistance of the test leads from the measured result e Short the two measurement leads connected to H Z and E X terminals e Press the 2nd button then the START STOP button to start the measure ment This value will be deducted from all resistance values measured thereafter until the rotary switch is turned to another function P H e MI 2 s R a O M Q wm har GS UO D Ke and START STOP ae appears on the display after the compensation value has been measured AN NOTE If the compensation resistance is gt 5Q or if the leads are not shorted when the measurement is started the value of compensation will be canceled Ground Resistance Tester Model 6472 29 5 2 2 Alarm Function This function is active only for 2
49. er and Schlumberger Schlumberger Wenner Advantage Disadvantage Advantage Disadvantage Need to move the two All four electrodes the two potential electrodes ES current E X and H Z and Xv and S Y only for the two potential ES Xv most readings This can and S Y must be moved significantly decrease the equally to acquire each time required to acquire reading a sounding Because the potential Potential electrode electrode spacing is spacing increases small compared to as current electrode the current electrode spacing increases Less soakings higher meter sensitive meters may sensitivity is required be used Because the potential Because all electrodes electrodes remain in are moved for each fixed locations the ef reading this method can fects of the near surface be more susceptible to lateral variations in near surface lateral and resistivity are reduced variations in resistivity These near surface lateral variations could potentially be misinterpreted in terms of depth variations in resistivity In general interpretations In general interpretations based on DC soundings based on DC soundings will be limited to simple will be limited to simple horizontal layered horizontal layered structures structures Source DC Resistivity T Boyd Ground Resistance Tester Model 6472 39 5 6 2 Changing the Measurement Method 1 Set the switch to P 2 Press the Hz oPTIONS button
50. er or Schlumberger meth ods several measurement results are recorded at the same memory location with the distance between electrodes as the third addressing criterion For earth coupling measurements EARTH COUPLING 1 2 3 4 the four mea surements provide the third addressing criterion for the same memory location None of the other measurements has an additional addressing criterion so each occupies only one memory address Since each measurement is dated you must set the date and time of the device before any storage in memory see 4 2 7 1 Saving Measurements into Memory Measurement results can be saved by performing the following e Press the MEM button The tester will automatically suggest the next free memory location Fr EE message e Press the MEM button a second time to save to the OBJ TEST location e If you decide not to save your results press DISPLAY to exit MEM mode To change the OBJ and TEST location use the gt and A Y buttons NOTE If a memory location is already occupied the message ol L will be dis played Pressing the MEM button will overwrite the measurement record When you change to SWEEP mode 6 9 the device automatically activates the MEM mode It offers a memory location before starting the measurement All of the results obtained will be stored at this location at the end of the measurement 54 Ground Resistance Tester Model 6472 For soil resistivity and potential measurements
51. erator and Site tabs allow you to maintain lists of operators and sites saving you time when specifying parameters for reports On the left of the Operator and Site tabs is the list of previously defined Operators and Sites On the right of the Operator and Site tabs is the individual parameters that will be saved in an associated database Only a single set of operator and site fields are saved in the recording database The Custom tab contains a list of user defined parameters Along side each user defined parameter is a check box Items that are checked will be added to an associated database Only a single set of Custom parameters can be maintained unlike the Operator and Site lists The Custom tab allows you to specify any user defined parameters in addition to the comments field of the Site tab that are to be used in displaying a report A NOTE You can also set defaults for session properties within the Ground Tester Control Panel by selecting File gt Edit Session Properties 8 8 Exporting the Report to a PDF File e Select the data by clicking on the file name under Recorded Data from the in strument in the Instrument window on the left hand side of the Control Panel e Click the Print button s Inthe Print dialog box that appears select PDF XChange 3 0 from the drop down menu then click OK e When the PDF is complete the Save As dialog box will appear e Choose a location to save the file and click Save This completes
52. eries from wall charger or vehicle power e Rugged dustproof and rainproof field case IP54 rated in closed position e Grounding standards IEC 61557 parts 4 and 5 compliant e Includes DataView software for data storage real time display analysis report generation and system configuration Ground Resistance Tester Model 6472 11 2 3 Control Features 12 16V to ne SC Aem WH sx10 10 DOUD RO Py w EARTH COUPLING 1 2 3 4 ok AL tat SP mh Boe H 1 L A A A E cr Duc E ALARM OBJ TEST oa ch JD SD D I D uE 6888 Hx RR koft bh SS Dauer NOSE Pada wm DH D DEES ee SHHRH a mewn See MANUALAUTO SWEEP E A gt MEM Hz oPTions Ee SC v MR DISTANCE START STOP DISPLAY _ e 2nd SMOOTH GROUND TESTER AEMC MODEL 6472 Figure 2 1 Four terminals H Z auxiliary electrode S Y electrode ES Xv earth ground electrode and E X earth ground electrode All terminals accept 4mm banana plugs Terminals H Z and ES Xv also accept special plugs for current clamps S Y will take a shielded cable Connector for charging the battery see 9 4 256 segment multi line backlit LCD see 2 4 Connector for an optical interface to a PC Either an RS 232 or USB connec tion can be used see 8 DataView Connector to the GroundFlex Adapter Model 6474 using a special adapter cable Rotary sw
53. ernal procedures For instrument repair and calibration You must contact our Service Center for a Customer Service Authorization Number CSA This will ensure that when your instrument arrives it will be tracked and processed promptly Please write the CSA on the outside of the shipping container If the instrument is returned for calibration we need to know if you want a standard calibration or a calibration traceable to N I S T Includes calibration certificate plus recorded calibration data Ship To Chauvin Arnoux Inc d b a AEMC Instruments 15 Faraday Drive Dover NH 03820 USA Phone 800 945 2362 Ext 360 603 749 6434 Ext 360 Fax 603 742 2346 or 603 749 6309 E mail repair aemc com Or contact your authorized distributor Costs for repair standard calibration and calibration traceable to N I S T are available NOTE You must obtain a CSA before returning any instrument Technical and Sales Assistance If you are experiencing any technical problems or require any assistance with the proper operation or application of your instrument please call mail fax or e mail our technical support team Chauvin Arnoux Inc d b a AEMC Instruments 200 Foxborough Boulevard Foxborough MA 02035 USA Phone 800 343 1391 508 698 2115 Fax 508 698 2118 E mail techsupport aemc com www aemc com NOTE Do not ship instruments to our Foxborough MA address Ground Resistance Tester Model 6472
54. ess m meter or ft feet Alarm for mQ and 2 Pole DISPLAY 2 press ON OFF direction lt or gt value 1 to 999Q Buzzer DISPLAY Gu press ON OFF Modbus address DISPLAY un press 1 to 247 Memory used MEM 1 press 000 to 512 total number of locations Memory location MR 1 press OBJ TEST International format date and time only Ground Resistance Tester Model 6472 27 CHAPTER 5 AUTOMATIC MODE AN VOLTAGE CHECK The tester first checks for possible interference If there is an external voltage of more than 42V the warning triangle A will be displayed If measurements are being performed in AUTO mode and a disturbance frequency is detected the tester will automatically look for a frequency that is different from the default 128Hz 5 1 Switching the Test Voltage Available in all functions except mQ and 2 Clamp If necessary the test voltages can be switched to either 16 or 32V as follows e Press the HZ OPTIONS button then press it again to make the output volt age Uout blink e Use the button to switch to 16 or 32V then press HZ OPTIONS again This setting is retained when the unit is turned off 5 2 Resistance Measurement mQ 2 Wire AN WARNING Before performing the resistance test verify that the sample under test is not energized 1 Get the switch to mo 2 Connect the resistance to terminals H Z and E X 28 Ground Resistance Test
55. evice displays the following parameters R R U pe le U U Act U and its frequency H E up Je 5 4 Earth Ground Measurement 3 Pole This function is used to measure an earth ground resistance with 2 auxiliary electrodes There are several measurement methods the full and simplified 62 method will be discussed in this section 5 4 1 62 Method 1 Set the switch to Ee 2 Place electrodes H Z and S Y to form a straight line with the earth electrode under test The distance between electrode S Y and the earth electrode is 62 of the distance between electrode H Z and the earth electrode the distance between the electrodes H Z and E X should be 8 to 10 times the depth of the rod you are testing wo PE oO distance d 62 d distance A 8 to 10 times rod depth 32 Ground Resistance Tester Model 6472 In order to avoid electromagnetic interference it is best to unwind the full length of each cable from the reel to keep the cables as far apart as possible on the ground taking care not to form loops and to avoid placing the cables near or parallel to metallic conductors cables rails fences etc Connect the cables to terminals H Z and S Y red and blue respectively dis connect the earth strap from the rod under test then connect terminal E green to the rod or electrode system to be tested 3 Press the 2nd button then the DISTANCE button The hundredths will blink eil D OR
56. g while recharging The Ground Resistance Tester Model 6472 is rugged easy to use and ideal for maintenance crews performing numerous tests It exceeds mechanical and safety specifications for shock vibration and drop tests per IEC standards The adjustable test frequency provides for rejection of high levels of interference allowing it to be used under difficult conditions such as high stray currents that affect accuracy 2 2 Key Features e Ground Resistance testing using the 2 clamp method no auxiliary rods needed e 2 and 4 Pole Bond Resistance Continuity Measurement DC Resistance with automatic polarity reversal e 3 Pole Fall of Potential measurement with manual or automatic frequency selection e 4 Pole soil resistivity measurement with automatic calculation of Rho p and user selection of the Wenner or Schlumberger test method e 3 Pole earth ground coupling measurement e Manual and automatic frequency scan from 41 to 5078Hz for optimum test accuracy in electrically noisy environments e Selectable test voltage of 16 or 32V up to 250mA of test current e Auto off power management e Automatic recognition of all electrode connections and their resistance value e Stores up to 512 complete test results in internal memory e Optically isolated USB communication e Remote set up and operation of all measurements using DataView software e Automatic report generation including the fall of potential plot e Rechargeable NiMH batt
57. hts during the installation The users access rights can be changed after the installation is complete DataView must be reinstalled for each user in a multi user system 1 Insert the DataView CD into your CD ROM drive If auto run is enabled the Setup program will start automatically If auto run is not enabled select Run from the Start menu and type in D SETUP if your CD ROM drive is drive D If this is not the case substitute the appropriate drive letter AN NOTE If installing onto a Vista based computer the User Account Control dialog box will be displayed Select the Allow option to proceed Ground Resistance Tester Model 6472 57 2 A Set up window similar to the one below will appear Sheet an oper hom tthe ki below ther select the Install buton Options Descriptor Adobe Reade Dodarrerer Uplate Fewwenre Upg ades Ground Tester Model 04709 GATI and 6477 Docuenerts Megohereneter Model 1080 5050 ond 5070 Mero Ohewneter Model E240 and E250 Poser Meter Moxie HOA Frang Lalin Logan Model POLIDO and POLIH Powe ad Model 3345 and 3345 8 Powedad Il Moet 0335 PowedPiad Ji Modal 8230 Sentinel Date Logger Zeche Logger H DTA Model 8510 instal the Ee r vernon of Dataview onto the commuter A This v tman of Dataview CC Ihe lowing inatiuments Figure 8 1 There are several different options to choose from Some options require an internet connection e DataView Version x xx xxxx
58. ion into memory use the MEM button see 7 The instrument also incorporates a SWEEP mode automatic execution of sev eral measurements at several different frequencies It is used to indicate how the measurement varies as a function of frequency In this case the device operates as in the automatic mode and the measurement process stops after taking the measurement at the final frequency 4 2 Instrument Configuration SET UP mode To configure the Model 6472 parameters turn the rotary switch to SET UP s All the segments on the display are activated for 1 second and then the PUSH button message appears on the display e Various parameters are accessible by pressing the corresponding button s The number or symbol which can be modified flashes These are changed using the SELECT button gt and CHANGE buttons A Y e To exit SET UP turn the rotary switch to another position e All of the parameters that are modified are permanently saved until a new instrument configuration is performed Parameter to be modified Button Possible values Date and Month Hz OPTIONS 1 press yyyy mm dd Time Hz OPTIONS 2 press hh mm Baud Rate Hz OPTIONS Gu press 9 6k 19 2k 38 4k Default configuration Hz OPTIONS un press yes no GroundFlex Adapter Model 6474 Test Frequency Hz OPTIONS 5 press 55 92 110 119 128 measurements only Test Voltage 16 or 32V Distance unit DISPLAY 1 pr
59. itch OFF position 7 measurement functions see 5 and 6 and SET UP function see 4 2 START STOP button Starts the measurement and compensates for the leads in the mQ measurement function see 5 2 1 Six function buttons see 2 5 Ground Resistance Tester Model 6472 2 4 Display NOTE External voltages will be displayed only on the small displays A2 and A3 without the view of the main display A1 This helps to rapidly recognize that these are measurements of external voltages Backlight The backlight turns ON automatically when entering a function and turns OFF after the function is complete Press the DISPLAY button to turn it back on NOTE In the Set up mode pressing the DISPLAY button also selects the next configurable parameter eu imp x10 10 000 Bes KALL H Woo D ege s tze a Sekt SH ALARM OBJ TEST VBA S100 ay pases Pa Lf UI LIDD kQOft Ser Cem ISTANCEFREQUENCY re 75 i a a ZE opp OD Oe Core CONFIG MANUALAUTO SWEEP E SO ne D A I I I I A 1 I I I I 1 I I 4 Figure 2 2 A1 Top main display A2 Middle small display A3 Bottom small display If this symbol blinks during a passive measurement a voltage of more than 42V is present at the tester s inputs uN If this symbol blinks during an active measurement the limits of use have been exceeded If the symbol appears constant during an active measurement the values to be measured are unsta
60. lectrode and supplementary electrodes or between earth electrodes Clamp should be connected to H If this clamp symbol blinks the instrument is refusing measurement because the clamp is not connected correctly Symbolizes the soil resistivity value Rho W or S indicates that Wenner H or Schlumberger method is used for the measurement changed by the Hz OPTIONS button 2 5 Button Functions Starts a measurement and compensates for lead resistance 5 2 1 START STOP Measurement stops automatically AUTO or is stopped by pressing this button again MANUAL 2nd Selects the second function highlighted in yellow under the buttons Increases or decreases the value of the flashing parameter displayed or selects the next parameter Press the button for a longer time to increase the change of value speed at a faster rate gt Selects the parameter to be modified or moves the cursor to the right MEM MR Me Stores measurements to memory MR Retrieves measurements from memory DISPLAY DISPLAY Displays all parameters of a measurement SMOOTH Smooths the display of measurement providing a more SMOOTH stable result Hz OPTIONS Hz OPTIONS Enables configuration of measurement functions DISTANCE DISTANCE Available for soil resistivity and V potential measurements It Ground Resistance Tester Model 6472 allows the setting of values of distances used for Rho p calculation 15 CHAPTER 3 SPECIFICATI
61. lue has to be entered use the CHANGE A W buttons to move to the next one FREQUENCY Indicates the test frequency Ex Indicates that the secondary function of a button will be used SWEEP Indicates SWEEP mode Used in 3 Pole and 4 Pole measurements MANUAL Indicates MANUAL mode the user has to stop the measurement otherwise the measurement keeps on running AUTO Indicates AUTO mode measurement stops immediately after all results are available NOISE If blinking indicates the measurement had a disturbance when the mea surement was started CONFIG Indicates that the blinking value of AUTO MANUAL mode frequency voltage or DC current direction can be changed MR Memory recall indicates the displaying of stored results is active MEM Indicates that there is recorded data in memory When blinking it indi cates that the results need to be saved by pressing the MEM button REMOTE Indicates the instrument is remotely controlled by the RS 232 USB 14 interface Ground Resistance Tester Model 6472 SMOOTH Indicates SMOOTHing of the displayed measurement results Cle Indicates that a clamp is steady or should be flashing connected to ES D Measured value R U I ft 2 Indicates that the measurement is running ALARM Indicates the alarm is activated An audible alarm will sound if the value measured is above the limit defined in the SET UP mode t Distances to be entered between earth e
62. materials such as lead or cadmium in compliance with the applicable regulations After prolonged storage the battery may be completely discharged If so it must be completely recharged Your instrument may not function during part of this recharging operation Full recharging of a completely discharged battery may take several hours AN NOTE In this case at least 5 charge discharge cycles will be necessary for your battery to recover 95 of its capacity To make the best possible use of your battery and extend its effective service life e Only use the charger supplied with your instrument Use of another charger may be dangerous e Only charge your instrument at temperatures between 0 and 40 C e Comply with the conditions of use defined in the operating manual e Comply with the storage conditions specified in the operating manual NiMH technology allows a limited number of charge discharge cycles depending significantly on e The conditions of use e The charging conditions Please refer to 9 5 for correct replacement of the battery Do not dispose of the battery pack with other solid waste Used batteries must be entrusted to a qualified recycling company or to a company specialized in processing hazardous materials Ia gt Table of Contents INTRODUCTION 0ccsssecsseecssneeeseeessneeesseessoeeesaneenseeessneeeneessseeenas 6 1 1 International Electrical Symbols s sssneeesessnenessnnneneen
63. measure the resistances of the auxiliary electrodes H Z S Y ES Xv and E X or if the resistance of the electrodes is too high see 10 1 start the measure ment by a long press of the START STOP button Rp and Rpp then R and R will be displayed m e DCH wv OS wy x ee wy D gan DP gn Lt Lt aes mu d R d R p gt 2s e PE H d 6 P ES Hd H R 1J i R 17 t P LI fk P 5 LI tio CO gt Bhk O l KERL START STOP DISPLAY Ground Resistance Tester Model 6472 5 6 5 Schlumberger Method 1 2 Set the switch to P Place electrodes S Y and ES Xv at a distance A apart then place elec trodes H Z and E X in the same straight line at a distance d measured from the midpoint of distance A Distance d must be between 2 and 30m Drive the electrodes to a depth p of not more than 1 3 of d Connect the cables to the electrodes then to terminals H Z S Y ES Xv and E X Program the distance into the instrument as described in 5 6 3 In order to avoid electromagnetic interference it is best to unwind the full length of each cable from the reel to keep the cables as far apart as possible on the ground taking care not to form loops and to avoid placing the cables near or parallel to metallic conductors cables rails fences etc 6 Start the measurement by pressing the START STOP button 11 P WI WI
64. measurement If the unit refuses to operate and the symbol for terminal H Z blinks the fuse must be replaced 74 Ground Resistance Tester Model 6472 e Fuse for clamp terminal ES Xv If this fuse is defective the unit will no longer recognize a clamp that is connected to terminal ES Xv making it impossible to perform a 4 Pole earth measurement with a clamp or an earth measurement with 2 clamps To test this fuse select the 4 Pole measurement function and connect a test clamp to terminal ES Xv If a clamp symbol does not appear next to the symbol for ter minal ES Xv in the display the fuse must be replaced AN NOTE For safety reasons this fuse must always be replaced by an identical model 0 63A F 250V 5x20mm 1 5KA Cat 2135 81 Procedure for replacing fuses 1 Disconnect the unit completely turn the rotary switch to OFF and close the lid 2 Loosen the four permanent screws at the bottom of the unit but do not remove them 3 Open the lid and carefully turn the housing upside down making sure the front panel does not fall out Then carefully pull the front panel and the unit all the way out of the housing 4 The fuse for terminal H Z is accessible at the back of the unit in the corner near the terminal for the battery charger 5 If only the fuse for terminal H Z needs to be replaced jump ahead to step 13 To replace the fuse for the clamp terminal ES Xv continue on 6 Loosen the two screws on
65. nces R R etc To display the measurement parameters press DISPLAY several times The device displays the following parameters Rg Uses Le R Act Ress U Act U and its frequency I Act I and its frequency H E To measure the resistances of auxiliary electrodes H Z and S Y or if the resis tance of the electrodes is too large see 10 1 start the measurement with a long press of the START STOP button R R Rg U s will be displayed 38 eu MT 2 Jo ser hm L al Q R he d gt 25 e H l Tho ka o ral fk g AUTO START STOP Ground Resistance Tester Model 6472 5 6 Soil Resistivity Measurements P Position To measure the resistivity of the soil two measurement methods are possible Wenner and Schlumberger The difference between the two methods lies in the positioning of the electrodes By default the device selects the Wenner method The Schlumberger method which allows you to move only 2 measurement electrodes rather than 3 is better suited for measuring soil resistivity at multiple depths The soil resistivity measurement with different distances d and therefore in dif ferent layers in depth of the soil can be used to establish resistivity profiles of the soil in question which can be useful for geological analysis the exploration of deposits hydrological studies etc and to determine the location of an earth electrode 5 6 1 Advantages and Disadvantages of Wenn
66. ncy to make a valid measurement when the NOISE symbol is no longer illuminated Ground Resistance Tester Model 6472 81 10 1 5 Error Messages When started up the Model 6472 device automatically performs a self test If a fault appears during this self test or during a measurement the device displays a message in the form Err XX There are 3 categories of errors 82 Harmless Correctable Fatal Errors 6 7 11 and 17 The message appears for approximately 1 second to inform the user Consider a repair if the error recurs e Errors 6 and 7 are always preceded by an automatic reset e During Error 11 the tester automatically resets to the fac tory default settings Errors 5 9 14 15 18 19 30 31 32 and 33 These errors concern the current measurement function and disappear if the function is changed The device can therefore be used but a repair will be necessary if the error persists e Error 18 indicates that the rechargeable battery in the tester cannot be recharged If this error occurs during recharging disconnect the tester from the charger and follow the procedure described in the fatal errors e Error 19 can be corrected by clearing the entire memory of the unit see section 8 3 e Errors 31 32 and 33 indicate excessive voltage or excessive current during a measurement Check the measurement setup for faults Errors 0 1 2 3 8 12 13 15 16 18 during battery recharge and 21 These
67. ng installation at the distribution level such as on hardwired equipment in fixed installation and circuit breakers CAT IV For measurements performed at the primary electrical supply lt 1000V such as on primary overcurrent protection devices ripple control units or meters 1 3 Receiving Your Shipment Upon receiving your shipment make sure that the contents are consistent with the packing list Notify your distributor of any missing items If the equipment appears to be damaged file a claim immediately with the carrier and notify your distributor at once giving a detailed description of any damage Save the damaged packing container to substantiate your claim 1 4 Ordering Information Ground Resistance Tester Model 6472 2 ccceesseseeeeeeeeeees Cat 2135 51 Includes rechargeable NiMH batteries optical USB cable power adapter 110 240V with power cord 115V US DataView software ground tester workbook CD carrying bag for meter and a user manual Ground Resistance Tester Model 6472 7 Ground Resistance Tester Model 6472 Kit 150 ft Cat 2135 52 Includes meter rechargeable NiMH batteries optical USB cable power adapter 110 240V with power cord 115V US two 150 ft color coded leads on spools red blue one 30 ft lead green two 5 ft color coded leads red blue two T shaped auxiliary ground electrodes set of five spaded lugs one 100 ft AEMC tape measure DataView software ground tester workbook CD
68. ng the probe with its lead to a new location but not mov ing the current and potential electrodes The instrument should be strategically positioned so that the leads will not be too short to perform all the measurements The Input Noise option allows the viewing of noise for Z or Y inputs d Configuster ale nn a Laf File Wiat Aun Hod Hemtarce gt Ante fueren bd Gawa To Fie DV Lest VoRage Line G t intari Cock ern Pon Claro R Deeathed re O rout Nowe Show Z input Show Y Input Sup Braeg Table Mie Kack Figure 8 9 66 Ground Resistance Tester Model 6472 8 4 5 4 Pole Soil Resistivity P When 4 Pole Test Resistivity is selected from the tool bar you can select e With or without Auxiliary Rod Resistance e Test voltage 16 or 32Vac e Auto frequency selects the optimum frequency from 41 to 128Hz usually 128Hz or select manually from the drop down frequency list Test Method Wenner or Schlumberger e Distances the distance d for Wenner test method or d and a for Schlumberger test method between the test electrodes needs to be en tered for resistivity calculation to read out directly in Rho Selecting a sweep frequency test from the drop down list will bring you to the sweep table selection The Input Noise option allows the viewing of noise for Z or Y inputs onlin steer Lond Fiom Fie Wia Aun Hod Hewtance gt Ante fueren 2 Garh To
69. nths of a unit press the gt button and then the A button until the desired digits are displayed 0 0 9 9 6 To terminate the programming of distance press the 2nd button and then the DISTANCE button In the case of the Schlumberger method it is also necessary to program distance A This is done in the same way as for distance d 5 6 4 Wenner Method 1 Get the switch to P 2 Place the 4 earth electrodes on a straight line at a distance d from one an other and at a depth p lt 1 3 d Distance d must be between 2 and 30m 3 Connect the cables to the electrodes then to terminals H Z S Y ES Xv and E X in sequence A Program the distance into the instrument as described in 5 6 3 Ground Resistance Tester Model 6472 41 In order to avoid electromagnetic interference it is best to unwind the full length of each cable from the reel to keep the cables as far apart as possible on the ground taking care not to form loops and to avoid placing the cables near or parallel to metallic conductors cables rails fences etc 5 Start the measurement by pressing the START STOP button eu MT Pw f d R bb 5 E5 thik o H AE m an AUTO START STOP Pw 2 7 d RsEs To display the measurement parameters press DISPLAY several times The device displays the following parameters Pw Rss ds Uses Lues U Act U ps and its frequency U and its frequency S ES To
70. o possible damage or injury AN NOTE For safety reasons replace the battery with an identical model NiMH Custom Pack 9 6 V 3 5 Ah Cat 2960 21 Procedure for replacing the battery 1 Disconnect the unit completely turn the rotary switch to OFF and close the lid 2 Loosen the four permanent screws at the bottom of the unit but do not remove them 3 Open the lid and carefully turn the housing upside down making sure the front panel does not fall out Then carefully pull the front panel and the unit all the way out of the housing 4 Loosen the two screws on the lid of the battery case and remove the lid 5 Pull the battery a short way out of the case without overstretching the con nection leads and loosen the two screws at the bottom of the case Then put the battery back into the case Ground Resistance Tester Model 6472 77 A 78 10 11 12 13 14 15 16 Making sure the battery leads are not overstretched and that the battery does not fall out carefully lift off the back of the unit turn it over and place it next to the front panel with the electronic components Press the clip off the plug and pull out the plug with the four battery leads in the corner near the terminal for the optical interface Avoid touching the circuitry or components Remove the old battery from the case and put in a new one Run the leads with the plug through the largest slot in the battery case Insert the bat
71. odes is measured at the test frequency set At higher frequencies the resistance is measured at 256Hz Ground Resistance Tester Model 6472 19 3 Pole earth resistance measurement R Measurement 0 09 to 10 0 to 100 to 1 00 to 10 0 to Range 9 999 BEES 9990 9 99KQ 99 9KQ Resolution 0 010 0 10 IO 10Q 1009 Intrinsic error 2 1ct Operating conditions R lt 3x Bu Ugur 32V Operating error for R Values for RB R and R Frequency Hz R gt 00 Rs lt 3kQ 41 to 513 3 2cts R R R 4 Z 0Q Rs lt me lt 3000 537 to 5078 6 2cts R gt 3kQ Rs lt 30kQ 41 to 513 10 2cts Let R R gt 30KO Rs lt 100kQ 41 to 128 10 3cts Note For a test voltage U u of 16V halve the value for R 4 Pole earth resistance measurement R Measurement 0 011 to 10 00 to 100 0 to 1 000 to 10 00 to Range 9 999Q 99 99Q 999 9Q 9 999kQ 99 99kQO Resolution 0 0019 0 012 0 1Q 1Q 10Q Intrinsic error 2 1ct Operating conditions R lt 3 x R U 32V Pong SE Operating error for R Values for R R and R Frequency Hz 41 to 513 3 2cts Ry R3 R Pa SANRA S 537 to 5078 6 2cts lt 3000 a a R gt 3kQ Rs lt 30kQ 41 to 513 10 2cts Ry K R R 9 lt 5000 R gt 30kQ Rs lt 100kQ 41 to 128 10 3cts Note With a test voltage U ur of 16V halve the value of
72. orded data from the instrument Real time data Connection status The communications port and speed of the connection The model number serial number and firmware version Date and time from the clock Battery status e Configuration window that shows all of the parameters available for modifi cation This window defaults to the instrument mode that is selected e Real time Measurement window that shows the measurement of each test performed in real time available only after a test has been performed If the indicated items are not shown on the screen select Restore Default Layout from the Window menu Ground Resistance Tester Model 6472 61 8 3 1 Establishing Communication to the Instrument If the instrument is turned ON at the time the Ground Tester Control Panel is opened a communication link will happen automatically If the instrument is turned OFF at the time the Control Panel is opened establish a communication link by going to Instrument gt Connect in the main menu e The Communication dialog box will appear Make sure that the communica tion port displayed in the dialog box matches the port that the serial cable is plugged into Conmwetion woe E 4 Commuricahorn Pon CA USB to Opica Seral Cable D on Commurscaton Pate 36600 bed Cancel Sus Adgess Hep Figure 8 5 Once the proper communication parameters have been specified click OK A NOTE The connection status can be seen in th
73. pedeginn iiie iiaii eiii iaa 88 Ground Resistance Tester Model 6472 5 CHAPTER 1 INTRODUCTION ZN WARNING N These safety warnings are provided to ensure the safety of personnel Please read and comply with these precautions This instrument is protected from accidental voltages of not more than 50V with respect to earth in measurement CAT IV The guaranteed level of protection of this equipment may be compromised if used in a manner not specified by the manufacturer Safety is the responsibility of the operator All metal objects or wires connected to the electrical system should be assumed to be lethal until tested Grounding systems are no exception Never exceed the maximum rated voltage and current and the mea surement category Never exceed the protection limits and always comply with the condi tions and place of use indicated in the specifications Do not use the instrument or its accessories if they appear damaged Use accessories that have overvoltage category and service voltages greater than or equal to those of the instrument CAT IV 50V Use only accessories that comply with safety standards IEC 61010 2 031 amp 32 Wear the appropriate protective gear insulating boots and gloves Check that no terminal is connected and the switch is set to OFF before opening the device Use only the charging unit supplied with the instrument to recharge the battery Troubleshooting and metrological verification
74. procedures must only be performed by qualified approved personnel or the factory NOTE The potentials on the various rods used for an earth measurement may be different if a nearby electrical installation is defective or certain weather conditions prevail thunderstorms It is up to the operator to decide whether to continue or postpone measurements in these situations 6 Ground Resistance Tester Model 6472 1 1 International Electrical Symbols Signifies that the instrument is protected by double or reinforced insulation This symbol on the instrument indicates a WARNING that the operator must refer to the user manual for instructions before operating the instrument In this manual the symbol preceding instructions indicates that if the instructions are not followed bodily injury installation sample and or product damage may result Risk of electric shock The voltage at the parts marked with this symbol may be dangerous Ground Earth symbol at em In conformity with WEEE 2002 96 EC 1 2 Definition of Measurement Categories CAT I For measurements on circuits not directly connected to the AC supply wall outlet such as protected secondaries signal level and limited energy circuits CAT Il For measurements performed on circuits directly connected to the electrical distribution system Examples are measurements on household appliances or portable tools CAT Ill For measurements performed in the buildi
75. r test then connect terminals E X and ES Xv to the earth electrode to be tested 3 Start the measurement by pressing the START STOP button eil Ti OC IIT Fo 6 CC e Bes LI a LO 3 lt HE If el 3 gt S Oye LI E START STOP 4 To display the measurement parameters press DISPLAY several times The device displays the following parameters R U se lu U Act UU and its frequency U and its frequency To measure the resistances of auxiliary electrodes H Z and S Y or if the resis tance of the electrodes is too large see 10 1 start the measurement with a long press of the START STOP button Rp Rg Upe will be displayed 36 Ground Resistance Tester Model 6472 e i gt WW ax EE II 2 e i Hd gt 25 TE START STOP We recommend repeating the measurement with the auxiliary electrodes placed at a different distance and in another direction see 5 4 3 5 5 2 Measurements with a Clamp For this selective earth measurement you need a current clamp either a Model SR182 or Model MN82 both available as an accessory These two types of current clamps are specially designed to work with the 6472 ground tester The SR182 is more precise suited to the measurement of higher currents up to 40Arms and for use on thicker conductors while the MN82 which is easier to handle accepts currents up to 10Arms and can be placed on conductors up to
76. rameters that can be set depending on the measurement function selected When a measurement is performed by a short or long press on the START STOP button the circular arrows S A on the display will rotate the measurement can be stopped by a second press of this button Whenever a new measurement function is selected the device automatically changes back to AUTO mode 6 1 Switching the Test Voltage Available in all functions except mQ and 2 Clamp If necessary the test voltages can be switched to either 16 or 32V as follows e Press the HZ OPTIONS button then press it again to make the output volt age Uout blink e Use the gt button to switch to 16 or 32V then press HzZ OPTIONS again This setting is retained when the unit is turned off 48 Ground Resistance Tester Model 6472 6 2 Measurement Frequency Selection If there are signals with a frequency that could interfere with the chosen test fre quency the NOISE symbol will appear While in MANUAL mode change the frequency by pressing the Hz OPTIONS button until the frequency flashes Press the button to choose the following frequencies e USr 55 92 110 119 128 Hz 128 Hz is default e 128 1367 1611 1758 Hz for the 2 clamps function 1611 Hz is default To change the user frequency USr press the A Y buttons A Y raises the value and 2 A V lowers it Table of possible USr frequencies 91 values from 41 to 5078Hz 41 43 46 49 50 55 60 6
77. rrrnessrnnrnsssernn 7 1 2 Definition of Measurement Categoortes 7 1 3 Receiving Your Ghipment A 7 1 4 Ordering Information 7 1 4 1 Kits Accessories and Replacement Parts 8 PRODUCT FEATURES nssssssssnnsnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nann 10 2 E DI le LI EE 10 2 2 Key Features eege Ee EE 11 23 Control Features E E T E E E 12 2 4 vDisplay a ee ides Acct elie he a E ok 13 2 5 Button Funchons EE EE T E EET 15 SPECIFICATIONS sssssssnnnnnnnnnnnnnnnnunnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nnn 16 3 1 Reference Conditions neteet tt teestttns restren nsreern teneret en tee 16 3 2 Electricalscccctescccnciest wae a a epea ea aae A EEan dela 16 3 2 1 Frequency Measurements eeeeeeeeerrrerrreeenrre 16 3 2 2 Voltage Measurements renere rnrnssrrnnnnserenn 16 3 2 3 Current Measurements enn 17 3 2 4 DC Resistance Measurements ccceeeeeeeeeeeeeeeeeneeeees 18 3 2 5 AC Earth Resistance Measurements cceeteeeeeeeees 19 3 2 6 Soil Resistivity Measurement 21 3 2 7 Earth Ground Potential Measurements V Pot 22 3 2 8 Earth Ground Measurements with 2 Camps 23 3 3 Data Storage norinni a e 23 3 4 ee E 23 3 5 Mechanical senine cee cee settee ted i aieia iani eiin 24 Ap Environmental ssena e E n EENS AEN EAR 24 SPA EE 25 OPERATION TE 26 4 1 General Operating Instructions 000 eect eeeneeeetneeeeeraeeeeeeeeenneeeee 26 4 1 1 Automatic Mode 26 4 1 2 Manual Expert Mode AA 26 Ground Re
78. rth The voltage which is proportional to the resistance of the earth connection is measured between this electrode and the earth electrode Ground Resistance Tester Model 6472 83 Reference earth The area of earth especially at the surface which is outside the range of influ ence of the earth electrode or earthing system Resistivity of the earth p Resistivity is defined as the resistance from wall to opposite wall of a cubic meter of soil It is measured in ohm meters Qm Selective earth resistance The parallel partial resistance of an earth connection or earthing system It is measured by selective measurements of current in the corresponding re sistance branch A selective earth resistance is always greater than the total earth resistance parallel connection Step voltage The potential difference bridged by a person who takes a step of 1m approx 3 ft with the resulting current flowing through the body from one foot to the other cf touch voltage Supplementary electrode An additional earth electrode earth stake earth rod Touch voltage The potential difference which a person is able to bridge with his or her body the resulting current being limited by the body and the local earth resistance cf step voltage The general term earth measurement can refer to measurements of individual earth electrodes earth connections or entire earthing systems depending on the object of interest Glossary This glossa
79. ry lists the terms and abbreviations used on the instrument and the digital display 3 Poles measurement of earth resistance with 2 auxiliary stakes 3 Pole method 4 Poles 4 Pole measurement of low earth resistance with 2 auxiliary stakes 4 Pole method GroundFlex _ selective earth measurement using the GroundFlex Adapter Model 6474 and GroundFlex sensor C earth coupling coefficient R with earth R C R R C earth coupling coefficient R with earth R C R R d A distances to be programmed to calculate resistivity according to the measuring method used 84 Ground Resistance Tester Model 6472 mQ EARTH measurement of low resistance continuity terminal E X earth socket current measurement return terminal earth measurement 3 or 4 poles EARTH COUPLING coupling measurement between two earth sockets ES l Act vi ES H E SEL NOISE R R R R Act R 1 R 2 ES Xv terminal measurement potential socket for calculating earth resistance H Z terminal measurement current injection terminal external current circulating at present between the instrument terminals current measured by the clamp connected to the ES terminal selective earth measurement with clamp measurement current circulating between the H and E terminals current measured via the GroundFlex Adapter Model 6474 selective earth measurement with Gro
80. sistance Tester Model 6472 4 2 Instrument Configuration SET UP mode 27 5 AUTOMATIC MODE cccscccssseessseessseeessneenseessseeeseeessneeenseeesenenss 28 5 1 Switching the Test Voltage A 28 5 2 Resistance Measurement MQ O Mire 28 5 2 1 Lead Compensation Measurement secere 29 522 Eu FUNCION ET 30 5 3 Resistance Measurement MQ 4 Wire ceense 31 5 4 Earth Ground Measurement O Polel 32 DAT 62 Method sinnini aa A NEE Eaa aai 32 54 2 Full Method ninais 34 5 4 3 Recommendations for a Reliable Measurement 35 5 5 Earth Ground Measurement G Pole 36 5 5 1 Measurement without a Camp 36 5 5 2 Measurements with a Camp 37 5 6 Soil Resistivity Measurements P Position 39 5 6 1 Advantages Disadvantages of Wenner and Schlumberger 39 5 6 2 Changing the Measurement Method 40 5 6 3 Programming the Distance for Electrode Placement 40 5 6 4 Wenner Method s src ane anaa 41 5 6 5 Schlumberger Method 43 5 7 Potential Measurement V Dot 44 5 8 Earth Ground Measurements with Two Camps 46 6 MANUAL MODE cccseessseeeseeessneeessensneeesseeesneeessneeeneeessneeenas 48 6 1 Switching the Test Voltage AA 48 6 2 Measurement Frequency Selection ceeeeeeseeecesneeeeeneeeesneeeenens 49 6 3 Manual Settings for MQ Measurement A 49 6 3 1 Continuity TeSt ainni nee 50 6 4 3 Pole Earth Ground Measurement amp Coupling eeesereeeeeee 50 6 4 1 3 Pole Earth Ground Measurements ecnnneeee
81. st e Select a test current positive negative or Auto e Enter and activate an alarm from 1 to 999Q 2 Wire only if desired For very low resistance measurement a lead compensation value see 5 2 1 may be entered using the Change button Input noise status at the input of the meter is always displayed Load Foon Fie 2Wie gt Faas Comers 2 Save Te Fan Set kemeerg Clock SR Onatied Lais DC Dwie Ants Endem ile e 2 P Lead Compersahor 0 eebe Change lege Noten Vers 0000r OC a Figure 8 6 Ground Resistance Tester Model 6472 63 8 4 2 3 Pole Ground Resistance Test When 3 Pole Ground Resistance is selected from the tool bar you can select With or without Auxiliary Rod Resistance Test voltage of 16 or 32VAc Distance d from terminal X to terminal Y Distance a from terminal X to terminal Z Auto frequency selects the optimum frequency from 41 to 5078Hz usu ally 128Hz or select manually from the drop down frequency list Selecting a sweep frequency test from the drop down list will enable the sweep table selection The Input Noise option allows the viewing of noise for Z or Y inputs 64 G Load From Tie Wiha fam Rod Restore gt fate Drees Save lofie AN Test Votaga Lint Set inctnanert Glock Dursa Duta Enabled j J Ae irgu Nome Shom Z beans Show Y rent W Sos Kat VYX 00000 OC Figure 8 7 Ground Resistance Tester Model 6472 8 4 3 4 Pol
82. tance A from the earth and electrode S Y ata distance d1 from the earth In order to avoid electromagnetic interference it is best to unwind the full length of each cable from the reel to keep the cables as far apart as possible on the ground taking care not to form loops and to avoid placing the cables near or parallel to metallic conductors cables rails fences etc Connect the cables to terminals H Z and S Y and connect terminal E Z to the earth 44 Ground Resistance Tester Model 6472 3 Press the 2nd button then the DISTANCE button The hundredths will blink e D Ro i Sr Et i Is DISTANCE OO LJ and DISTANCE soa 4 To modify the hundredths of meters or feet press the A button until the desired digit is displayed 0 9 5 To select and modify the tens press the button and then the A button until the desired digit is displayed 0 9 6 To select and modify the units and tenths of a unit press the button and then the A button until the desired digits are displayed 0 0 9 9 7 To terminate the programming of distance press the 2nd button and then the DISTANCE button NOTE To program distance d perform the preceding steps 8 10 11 Start the measurement by pressing the START STOP button en HU Sy Maro e ze DD START STOP 2 gt gt Pay ere To display the measurement parameters press DISPLAY several times The devic
83. tance of tower legs without disconnecting the overhead ground conductor The Model 6472 measures from 0 01 to 99 99kQ and is auto ranging automatically seeking out the optimum measurement range test frequency and test current Easy to use Simply connect the leads select the test mode press Start and read the results Up to 512 test results can be stored in internal memory for later recall to the display or downloaded to a PC via DataView software The large LCD is easy to read and indicates ground electrode resistance test voltage current and frequency as well as individual electrode resistance battery status and more The Model 6472 is CAT IV rated to 50V and is over voltage protected to more than 250Vac against accidental connection to live circuits The voltage is also displayed on screen In the event of a system fault the Model 6472 can withstand 250VAc Additional features of the Model 6472 include a heavy duty field case sealed against dust and water when closed the test button is also sealed against the ele ments manual and automatic test frequency selection from 41 to 5078Hz user selectable 3 Pole Fall of Potential or 4 Pole Soil Resistivity test methods and user selectable 2 Pole or 4 Pole Bond Resistance test method 10 Ground Resistance Tester Model 6472 The Model 6472 is powered by 9 6V 3 5 Ah NiMH rechargeable batteries An ex ternal recharger powered from 120 230V 50 60Hz is included and provides for testin
84. ted during the installation process have been added to your desktop NOTE If you connected your instrument to the computer before installing the software and drivers you may need to use the Add Remove Hardware utility to remove the instrument driver before repeating the process 8 2 Connecting the Model 6472 to your Computer The Model 6472 is supplied with an optically isolated USB interface cable required for connecting the instrument to the computer This cable Cat 2135 41 is equipped with a USB type A on one end and an optical connector on the other end To connect the Model 6472 to your computer 1 Connect the optical connector end of the cable to the serial port on the front panel of the Model 6472 see Figure 2 1 Item 4 2 Connect the USB type A end of the cable to an available USB port on your computer You are now ready to use the DataView software with the 6472 60 Ground Resistance Tester Model 6472 8 3 Opening the Ground Tester Control Panel To open the Control Panel double click the Ground Tester Icon that was created during installation located on the desktop I mee Deg erg Fee a ei AER ty E SE ay lt n ran e pe geet roared weg d mi Li f li Figure 8 4 The Ground Tester Control Panel opens and displays the following e A shortcut toolbar e Atoolbar with the mode selection and start stop buttons s The instrument s status window on the left hand side Rec
85. tery plug in the corner near the terminal for the optical interface The two pins should point towards the clip Avoid touching the circuitry or components Return the back of the unit with the new battery in the case to the front panel with the components taking care not to stretch the battery leads Carefully lower the back of the unit and make sure that it is aligned correctly the four cylindrical holes on the back must slip over the four mounting pins on the front panel Also make sure you do not pinch the battery leads or other wires or components Pull the battery a short way out of the case without overstretching the connection leads and retighten the two screws at the bottom of the case Then put the battery back into the case Put the lid back onto the battery case and screw it shut Wipe off any dirt on the seal and housing rim Put the unit back into the housing and screw it into place Fully charge the new battery in the unit before using it Reset the time and date NOTE If the instrument is not used for long periods of time more than 6 months it is recommended in order to recover the initial capacity of the battery to make several charge discharge cycles 3 to 5 times Discharge cycle 15 H can be made with the instrument in MANUAL mode DC 2 Pole 2 Pole resistance measurement and a short circuit between H Z and E X plugs Ground Resistance Tester Model 6472 CHAPTER 10 TROUBLESHOOTING 10 1 Error
86. the lid of the battery case and remove the lid 7 Pull the battery a short way out of the case without overstretching the con nection leads and loosen the two screws at the bottom of the case Then put the battery back into the case 8 Making sure the battery leads are not overstretched and that the battery does not fall out carefully lift off the back of the unit turn it over and place it next to the front panel with the electronic components 9 The fuse for the clamp terminal ES Xv is now accessible on the printed circuit board in the corner near terminal E X When replacing the fuse avoid touching the circuitry or components 10 Return the back of the unit to the front panel with the components taking care not to stretch the battery leads Carefully lower the back of the unit and make sure that it is aligned correctly the four cylindrical holes on the back must slip over the four mounting pins on the front panel Also make sure you do not pinch the battery leads or other wires or components Ground Resistance Tester Model 6472 75 11 Pull the battery a short way out of the case without overstretching the connection leads and retighten the two screws at the bottom of the case Then put the battery back into the case 12 Put the lid back onto the battery case and screw it shut 13 Wipe off any dirt on the seal and housing rim 14 Put the unit back into the housing and screw it into place 9 4 Recharging the Batter
87. tinuity check The display is in the sensitivity range 0 50 to 1 99kQ and the terminal check is limited to terminal H Z a cable must be connected to it making it possible to start the measurement with an open circuit For a continuity check the following settings are mandatory s The 2 wire mQ measurement function must be selected e The device must be in manual mode s The alarm function must be active On e The alarm threshold must be low lt e The buzzer must be activated bEEP On 6 4 3 Pole Earth Ground Measurement amp Coupling 6 4 1 3 Pole Earth Ground Measurements Pressing on HZ OPTIONS in MANUAL mode allows the following parameters to be changed using the gt button e EARTH blinks gt Earth Coupling Measurement e 128 Hz blinks gt Test Frequency Measurement e Test voltage blinks gt Test Voltage Selection 6 4 2 Earth Ground Coupling Measurements This measurement calls for making and storing 3 intermediate measurements at the same frequency It is available only in MANUAL mode Connection diagram Measurement 3 Earth 1 Earth 2 Measurement 2 R Measurement 1 R 50 Ground Resistance Tester Model 6472 Press HzZ OPTIONS and use the k button to switch from EARTH to EARTH COU PLING Proceed as follows s If you want to eliminate the resistance of the measurement leads you can use lead compensation 2nd START before starting the actual coupling measurement see 5 2 1
88. uences between the transmitting clamp and the receiving clamp Value measured Minimum separation Q MN82 SR182 0 to 1 0 1m 4 0m 0 1to5 0 4m 1 04 0 1m 4 5 to 10 0 5m 1 08 0 2m 8 10 to 50 0 7m 2 04 0 3m 1 50 to 100 0 9m 3 0 5m 1 08 100 to 500 1 2m 4 0 5m 1 08 46 Ground Resistance Tester Model 6472 1 Start the measurement by pressing the START STOP button In the case of the diagram below the earth impedance measured is equal to Roop Re Rey Rey II Res LOOP P START STOP Bo HI R Loo l E5 ec a pu a Gm x Gm Li E e S bts a Kos LI Lu eg mal af 3 S gt NOTE In the AUTO mode the measurement frequency is 1611Hz To make an earth measurement that is free of inductive effects you must change to MANUAL mode and choose a lower measurement frequency see 6 2 Ground Resistance Tester Model 6472 47 CHAPTER 6 MANUAL MODE All of the measurement functions described in 5 AUTO mode can be performed in MANUAL mode if necessary To access MANUAL mode e Press the HZ OPTIONS button once The HZ OPTIONS symbol appears and the AUTO indicator blinks e Use the gt button to switch from AUTO to MANUAL or when in 3 Pole or 4 Pole earth measurement to SWEEP see 6 9 e When the tester is in MANUAL mode you can press HzZ OPTIONS repeatedly to see various pa
89. undFlex indicates the presence of external interference causing misrepresentation of the earth or resistivity measurement average resistance calculated from R and R resistance measured with a positive current circulation from terminal H to E resistance measured with a negative current circulation from terminal H to E resistance currently calculated from values U Act and I Act first value measured to calculate the coupling between 2 earth sockets R R R second value measured to calculate the coupling between 2 earth sockets R R R third value measured to calculate the coupling between 2 earth sockets R R R first earth value calculated R R Re second earth value calculated R R R coupling resistance between earths R and R R R R R 2 earth resistance connected to terminal E resistance of the stake connected to terminal H Ground Resistance Tester Model 6472 85 LOOP PASS SEL R o SES AO U Act H E OUT C C C C SrEL resistance of the earth loop measured with the 2 clamps function value of the R Act resistance PASS for passive measurement with interference current circulating in the installation resistance of the stake connected to terminal S selective earth resistance measurement of the current with a clamp or GroundFlex resistance between stakes S and ES
90. y AN NOTE To make the best use of the battery and prolong its service life ob serve the following rules e Use only the battery charger supplied with the unit other chargers may be hazardous e Recharge the battery only at temperatures between 32 and 104 F 0 and 40 C e Observe the conditions of use and storage defined in the specifications Even an NiMH battery can be recharged only a limited number of times This num ber and thus the service life of the battery is highly dependent on the following factors e the operating conditions e the recharging conditions As the earth tester might go some time without use and the battery has a natural tendency to run down you should check the battery level at regular intervals To do this turn on the unit and check the battery level indicator at the top of the display If there is only one bar in the symbol or if there are no bars at all the bat tery should be recharged If the unit is not used for a long time the battery might run down all the way In this case recharging can take several hours In addition the unit might not work properly at the start of recharging The capacity and lifetime of the battery may also be diminished After about five charging discharging cycles the battery will recover its initial capacity To recharge the battery plug the charging unit into the connector at the upper left connector in Fig 2 1 and connect the charging unit to a 100
91. y updates approx 3 times per s Signal Conversion TRMS or sum of all harmonics 10 to 450Hz during selective earth measurements with clamp or by GroundFlex sensors Measured Range 0 00 to 9 99V 10 to 65V Resolution 0 01V 0 1V Intrinsic error 2 1ct Operating error 5 1ct Input impedance Ze Zs Larl 1 2MQ Operating frequency DC and 15 to 440Hz 3 2 3 Current Measurements External Current Measurements Measuring Method Digital by sampling at 4028Hz low pass filter FFT Measuring Rate Display updates approx 3 times per s Signal Conversion Sum of all harmonics 10 to 450Hz With Current Probe SR182 0 00 to 10 0 to 100 to 1 00 to 10 to Measurement Range 9 o9ma 99 9mA 999mA 9 99A 40A Resolution 0 01mA 0 1mA 1mA 0 01A 0 1A Frequency range 16 to 49Hz 50 to 99Hz 100 to 400Hz Operating error from a f Ge i 10 2cts 5 2cts 3 2cts Operating error from e to Ka A gt 20 10 2cts 5 2cts Ground Resistance Tester Model 6472 17 With Current Probe MN82 0 00 to 10 0 to 100 to 1 00 to 10 to Measurement Range gogma 99 9mA 999mA 9 99A 40A Resolution 0 01mA 0 1mA 1mA 0 01A 0 1A Frequency range 16 to 49Hz mi 50 to 99Hz 100 to 400Hz Operating error from ae f ei SS 15 2cts 7 2cts 5 2cts Operating error from o e Ca i gt 20 15 2cts 7 2cts

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