GEO416 GEO416 - HellermannTyton
Contents
1. 2 2 2 44 4 44 17 5 1 How to save a Measurement nici 17 5 2 how to cancel one or several 17 5 3 How to recall a measurement i 18 D ANSESUMENT RE ET rrenari A ee EE 19 7 INSTRUMENT CONNECTION 2 14 2 0 19 6 MAINTENANCE 20 oil ai ii 20 8 2 Battery replacement iii 20 9 0 Jnstriamenit Cle anilib 20 EO RE 20 9 TECANICALSPEGCIFICATONS siriani aprilia 21 Il Fenta lea S ae 21 9 1 1 Reference standards oi iii ai 22 9 1 2 SS Ez Sil 22 2 mem 22 9 2 1 Operating environmental conditions 22 222 PAC CS 2 n 22 9 3 1 Standard and optional accessories GEO416 i 22 9 3 2 Standard accessories 41665 a 22 105 SERVICE 23 TU d Velenosi qua EOD Pers HN 23 10 2 Aftersales 23 11 PRACTICAL REPORTS FOR ELECTRICAL 1 24 11 1 Earth resistance in tt systems 22. resistance value be lower than the full T 1 eb men m resistance eb men m scale the instrument emits a double tone indicating the positive outcome of 1 the test and displays the resistance measurement as well as the interfering 4 voltage value at the time of measuring 24 CAUTION O OOOO 11 When the test is over should the earth EARTH 3W resistance value be higher than the full u Aia resistance value gt 4 than scale scale the instrument emits a long tone Input interfering voltage value indicating the negative outcome of the test and displays the screen beside 12 The measurements can be stored pressing the SAVE key twice 5 1 EN 8 Tali GEO416 GEO416GS 4 4 EARTH 2W 2 WIRE EARTH RESISTANCE MEASUREMENT CAUTION e The instrument can be used for voltage and current measurements on installations with over voltage category equal to CAT 11 240V to earth and maximum voltage of 415V between inputs Do not connect the instrument to installations whose voltages exceed the limits indicated in this manual Exceeding such limits may cause electric shock to the user and damage the instrument Always connect the cables to the instrument and to the alligator clips when the latter are not connected to the plant under test Always respect the Hand held area of probe see 4 2 If the length of the supplied cables isn t suitable for the plant under test
3. EN 2 Tali GEO416 GEO416GS 1 2 DURING USE You are recommended to read carefully the following instructions CAUTION Failure to comply with warnings and instructions may damage the instrument and or its components as well as injure the operator If the low battery symbol is displayed during use interrupt testing and replace batteries following the procedure described in 8 2 e Before selecting a new function disconnect the test leads from the circuit under test e When the instrument is connected to the circuit under test never touch any unused terminal e Do not measure resistance in the presence of external voltages although the instrument is protected an excessive voltage may cause malfunction e Avoid submitting the instrument to voltage while measuring i e a test lead slipping off the measuring point accidentally touching an energized point 1 3 AFTER USE e Turn off the instrument pressing ON OFF key after using it e If you expect not to use the instrument for a long time remove the batteries 1 4 DEFINITION OF MEASUREMENT CATEGORY OVERVOLTAGE The standards IEC EN61010 1 Safety requirements for electrical equipment for measurement control and laboratory use Part 1 General requirements define what a measurement category usually called over voltage category means Under 6 7 4 Measuring circuits it quotes Circuits are divided into the following measurement categories e Measurement category IV
4. 1 Turn on the instrument pressing the power key Connect the instrument to a PC by means of the opt insulated cable provided with the 2 software package Communication is enabled at any function except for measurements as well as when memory management is active 5 5 3 Use the data management software to download the instrument s stored data to a PC During the data transfer the instrument displays a screen as beside then after completing the data transfer goes back to the previously selected mode EN 19 Tali GEO416 GEO416GS 8 MAINTENANCE 8 1 GENERAL This is a precision instrument Strictly follow the instructions for use and storage reported in this manual to avoid any possible damage or danger during use Do not use this tester under unfavorable conditions of high temperature or humidity Do not expose to direct sunlight Be sure to turn off the tester after use If the instrument is not to be used for a long period you are recommended to remove batteries to avoid leakages of battery liquid which may damage its internal circuits 8 2 BATTERY REPLACEMENT When the low battery indication see S 9 1 2 is displayed the batteries are to be replaced Turn off the instrument pressing the ON OFF key for a while Disconnect the cables from the input terminals Remove the battery cover screws and detach the battery cover Replace batteries with new ones of the same type see S 9 1 2 keeping to the right polarity signs
5. a socket or panel board as an auxiliary rod if also the earth connection is available the measurement can be taken on the socket directly between NEUTRAL and EARTH EN 9 iw GEO416 GEO416GS CAUTION If you wish to effect the measurement using the neutral and earth conductors of an ordinary socket you may accidentally connect to phase in this case the detected voltage as well as the warning symbol for wrong entering will be displayed and no measurement will be effected even though the GO key is pressed Negro p Nero n Black 224 _ Noir Schwarz Verde Green Vert Gr n PE MN 77777 Ra Fig 5 Two wire earth resistance measurement from the panel board 1 Turn the instrument on pressing the ON OFF key Pressing the right and left arrow keys gt select MOD then pressing the up and down arrow keys V select 2W option 3 A screen similar to the one beside appears where the input interfering voltage value of the instrument is displayed Input interfering voltage value 4 Connect the blue red green and black cables to the corresponding instrument s input terminals H S ES E then adding crocodiles if necessary 5 Extend if necessary the blue and red measuring cables separately using cables with proper section Adding any extension does not require calibration and does not affect the measured earth resistance value Connect crocodiles to the auxil
6. 165 x 75mm 9 x 6 x 3in 1kg 2lv 6x1 5V batteries type AA LR6 or 6x1 2V rechargeable batteries NI MH AA LR6 2100mA symbol is displayed approx 500 tests after 3 min of idleness LCD custom with back light 73x65 mm 999 memory locations optoinsulated port for bi directional communication 23 5 C 73 41 F 0 40 C 32 F 104 F lt 80 RH 10 60 C 14 F 140 F 9 3 ACCESSORIES 9 3 1 Standard and optional accessories GEO416 See enclosed packing list 9 3 2 Standard accessories GEO416GS e Setof4 cables banana banana L 1m Set of 4 alligator clips Carrying bag User manual ISO9000 calibration certificate KIT416CV COC4 UK BORSA2000N EN 22 Tali GEO416 GEO416GS 10 SERVICE 10 1 WARRANTY TERMS This instrument is guaranteed against material or manufacturing defects in accordance with general sales conditions During the warranty period the manufacturer reserves the right to decide either to repair or replace the product Should you need for any reason to return back the instrument for repair or replacement take prior agreements with your local distributor Freight charges are up to the customer Do not forget to enclose a report describing the reasons for returning the unit as well as the detected fault Use only original packaging Any damage occurred in transit due to no original packaging will be charged anyhow to the customer The manufacturer will not be responsible f
7. Replace cover and screws Use the appropriate battery disposal methods for your area 1 2 3 4 oom 8 3 NSTRUMENT CLEANING Use a soft dry cloth to clean the instrument Do not use wet clothes solvents water etc 8 4 END OF LIFE Caution this symbol indicates that equipment and its accessories shall be subject to a separate collection and correct disposal EN 20 Tali GEO416 GEO416GS 9 TECHNICAL SPECIFICATIONS 9 1 TECHNICAL FEATURES Accuracy indicated as reading number dgts resolution at 23 5 C 8096 RH 3 and 2 wire earth resistance measurement EARTH 3W and EARTH 2W Measurement range A Reading Measure Q Resolution Q Accuracy 0 01 19 99 0 08 19 99 20 0 199 9 20 0 199 9 200 1999 200 1999 2 5 rdg 2dgt 2 00 19 99k 2 00 19 99k 0 01k 20 0 49 9k 20 0 49 9k Ground resistivity measurement p distance among the rods 1m Range _ Reading Om T k m 0 06 19 99 0 50 19 99 20 0 199 9 20 0 199 9 200 1999 200 1999 2 00 19 99k 2 00 19 99k 0 01k 20 0 199 9k 20 0 199 9k 200 314k 200 314k Measuring frequency 77 5Hz Test current lt 12mA Open loop voltage lt 25Vrms 4 Disturbance voltage ampere volt circuits the measurement is taken with the stated accuracy if the interfering voltage is lt 3V while for interfering voltages ranging from gt 3V and lt 9V the accuracy decreases progressively w
8. as the last selected measuring mode are displayed before switching off 4 2 2 Auto power off The instrument automatically turns off 3 minutes after the last key pressing To resume operation turn on the instrument pressing the on off key EN 6 Tali GEO416 GEO416GS 4 3 EARTH 3W 3 WIRE EARTH RESISTANCE MEASUREMENT The measurement is carried out in compliance with standards IEC 781 VDE 0413 IEC EN61557 5 CAUTION e The instrument can be used for voltage and current measurements on installations with over voltage category CAT III 240V to earth and maximum voltage of 415V between inputs Do not connect the instrument to installations whose voltages exceed the limits indicated in this manual Exceeding such limits may cause electric shock to the user and damage the instrument Always connect the cables to the instrument and to the alligator clips when the latter are not connected to the plant under test Always respect the Hand held area of probe see 4 2 If the length of the supplied cables isn t suitable for the plant under test see 11 You can create your own extensions following indications in 11 2 1 Blu Blue Azul Blau Bleu Black Negro Noir Schwarz Fig 3 Three wire earth resistance measurement Turn on the instrument pressing the ON OFF key Pressing right left arrow keys gt select MOD then pressing up down arrow keys V select 3W option A screen similar to the one
9. beside appears where the input interfering voltage value of the instrument is displayed Input interfering voltage value MOD 4 Connect the blue red green and black cables to the corresponding instrument s input terminals H S ES E then adding crocodiles if necessary EN 7 Tali GEO416 GEO416GS 5 Extend if necessary the blue and red measuring cables separately using cables with proper section Adding any extension does not require calibration and does not affect the measured earth resistance value Drive the auxiliary rods into the ground keeping to the distance instructions provided by the standards S 11 2 7 Connect crocodiles to the auxiliary rods and to the installation under test see Fig 3 8 Press GO key the instrument starts carrying out measurement 9 While the instrument is measuring a EARTH 3W screen similar to the one beside appears where the instrument s input lt gt gt e interfering voltage value is displayed When the message Mkasurne is displayed Measuri Input interferi It do not disconnect or touch the test 4 V leads P MOD CAUTION When starting measurement the input interfering voltage is measured at both the volt and ampere circuit Should it range between 3 V and 9 V the instrument carries out measurement and displays the symbol A indicating the uncertainty decline of the measurement S 9 1 10 When the test is over should the earth EARTH 3W
10. the instrument emits a long tone indicating the negative outcome of the test and displays the screen beside Measurement of ground gt resistivity higher than the full scale kOm Value of input interfering voltage and rods distance m set aw fl MOD DIST UNIT CAUTION The full scale is calculated as pmax 2 DIST where DIST is the value set for the distance among the rods and R the maximum resistance value which can be measured by the instrument The full scale of ground resistivity measurement depends on the setting of the distance among the rods 14 The measurements can be stored pressing the SAVE key twice 5 1 EN 14 Tali GEO416 GEO416GS 4 5 1 Anomalous measuring applications 1 When starting a measurement the instrument checks the continuity measuring cables f the volt circuit red cable S and green cable ES is interrupted or its resistance value is too high the instrument displays a screen similar to the one beside Check Value of input interfering voltage that terminals are properly connected and that the earth rod is connected to terminal S and not driven into a pebbly or scarcely conductive ground In this latter case pour water around the rod to decrease its resistance value 11 2 RP gt top is displayed when gt 5 resistance Rs gt 50KQ is summed up to the volt circuit gt The resistance of rod S exceeds the value 1200 100 Rx O wh
11. 4 11 2 Earth resistance voltaamperemetric method 25 11 2 1 Creating cables 2 25 11 2 2 Method for small sized earth rodS i 25 11 2 3 Method for large sized earth 25 W128 Ground FESISHVINY m t 26 11 3 1 Approximate evaluation of intentional rods contribution 27 EN 1 Tali GEO416 GEO416GS 1 SAFETY PRECAUTIONS AND PROCEDURES The instrument was designed in compliance with standards IEC EN61557 and IEC EN61010 1 relative to electronic equipment CAUTION For your own safety and to avoid damaging the instrument you are recommended to follow the procedures described in this manual and read carefully all instructions preceded by this symbol Before and during measurements keep to the following instructions e Do not take measurements in wet places as well as in the presence of explosive gas and combustibles or in dusty places e Even though you are not taking any measurement avoid any contact with the circuit under test with exposed metal parts unused measuring terminals circuits etc e Do not take any measurement any measurement whenever anomalous conditions occur such as deformations breaks leakages blind display etc e Pay utmost attention when taking measurements of voltage higher than 25V in special places building yards swimming pools etc and higher tha
12. CE GEO HIG GEO416 GEO416cs Copyright HT ITALIA 2012 Release EN 2 00 04 10 2012 Tali GEO416 GEO416GS Table of contents 1 SAFETY PRECAUTIONS AND PROCEDURES erm 2 1 1 Preliminary instructions ii 2 1 2 ING US RI m 3 EE 45 3 1 4 Definition of measurement category Overvoltage 3 Z2 GENERSGDESCRIPION iii 4 215 IISTUMSNCASSsen Rio anelli 4 5 PREFARINGTRE INSIRUNENT i 4 ON EE ege ER 4 2 Per 4 Cr 4 SA 4 4 5 2 1 6 5 Al Merument GSS CMU ON 5 4 2 MEASURING ACCESSORIES 5 Fig 2 Measuring accessories 5 4 2 1 SWING OM ae A 6 4 2 2 AUIO POWEeFOllra narrano 6 4 3 EARTH 3W 3 wire earth resistance measurement 7 4 4 EARTH 2W 2 wire earth resistance measurement 9 4 5 p Ground resistivity measurement ii 12 4 5 1 Anomalous measuring 15 5 MANAGEMENT OF STORED
13. cation used Values of L and P parameters Press the arrow keys A to 2 cen select the memory location where cancellation of data is to be started the displays a screen similar to the one beside Number of the memory location where cancellation is to be started Values of L and P parameters CAUTION Confirming cancellation of data causes removal of all stored data starting from the selected location till the last memory location EN 17 Press the CLR key the instrument displays a screen similar to the one beside Alternatively Confirm cancellation of measurements pressing ENTER key the instrument emits a double sound tone confirming cancellation of the 4 Or 4 Press ESC key to go back to previous screen selected measurements 5 3 HOW TO RECALL A MEASUREMENT 1 Press the RCL key the instrument displays a screen similar to the one beside Press the arrow keys A V to select the memory location whose content is be displayed Press the ENTER key to display the measurement stored inside the selected memory location the instrument displays a screen similar to the one beside 416 GEO416GS CLR First and last memory location to be cancelled and confirmation required Number of the last memory location Values of L and P parameters Number of the memory location whose content is to be displayed Values of L and P parameters Measurement stor
14. d tone and displays the screen beside 7 When starting a measurement if an interfering voltage higher than 9V is detected at both the ampere and volt circuits inputs the instrument do not perform the test emits a long sound tone and displays the screen beside 8 If battery voltage is too low the instrument displays the symbol of low battery as well as the message LOW BATT and no measurement is allowed It is Input interfering voltage however possible to carry out settings LOW BATT value and distance set reading of stored data etc 4 alic ES m d 9 The above said anomalous cases cannot be stored EN 16 Tali GEO416 GEO416GS 5 MANAGEMENT OF STORED DATA 5 1 HOW TO SAVE A MEASUREMENT After taking a measurement 1 press SAVE key the instrument displays a screen similar to the one beside No of memory location where the measurement has to be saved Last value set for parameters L and P Should you need to modify the values of the parameters L and P press the 2 arrow keys lt gt and select L or P then pressing the arrow keys A V set the desired value from 1 to 255 These values can enable you to trace back the place where the measurement was effected Confirm measurement storing pressing SAVE key or ENTER 3 OR gt 5 2 HOW TO CANCEL ONE OR SEVERAL MEASUREMENTS Press RCL key the instrument displays a screen similar to the one beside lo
15. ed in the selected memory location Values of interfering voltage at measurement Press the ESC key to go back to previous screen and press the ESC key again to exit the memory management EN 18 Tali GEO416 GEO416GS 6 INSTRUMENT RESET CAUTION BEFORE CARRYING OUT THE INSTRUMENT S RESET SAVE ALL DATA RELATIVE TO THE MEASUREMENTS EFFECTED BY DOWNLOADING THEM TO A PC Keeping down the RCL CLR key press the switch on key The instrument emits a short sound tone showing all display segments for approx 1 second Then it emits a second short sound tone displaying the screen beside for approx 3 seconds 2 1 When the instrument is off press the RCL CLR key CAUTION The HARD RESET procedure deletes all data previously stored and the parameter DST resumes its default value 1 m or 3 ft 7 INSTRUMENT CONNECTION TO PC The instrument can be connected to a PC by means of the serial port or USB and opt insulated cable provided along with the software package First it s necessary to select the COM port used for the transmission and the correct baud rate 9600 bps To set these parameters install the software and consult the help on line The selected port shall be free of any other device or application such as mouse modem etc CAUTION Optical port emits Laser radiations Don t locate beam at eye level Class 1M laser apparatus according to EN 60825 1 To transfer stored data to PC keep to the following procedure
16. ensions If the length of the supplied cables isn t suitable for the plant under test You can create your own extensions without influencing the instrument s accuracy For your own safety and to avoid damaging the instrument you are recommended to respect the following indications Always use cable characterized by Insulation voltage and Insulation class complying to Nominal voltage and measurement category Overvoltage of the plant under test Always use terminal connectors characterized by measurement category Overvoltage and Nominal voltage complying to Nominal voltage of the plant under test see 1 4 It is recommended the 1066 IECN optional accessory 11 2 2 Method for small sized earth rods Let a current stream between the earth rod under test and an auxiliary probe placed at a distance equal to fivefold the diagonal of the area limiting the earth installation itself Place the voltage probe at approximately half way between the earth rod and the current probe finally measure voltage between both of them Rouge Red Rojo Rosso Rot Green Vert Verde Gr n Black Negro Nero Noir Schwarz Fig 7 Earth resistance measurement small sized earth rods 11 2 3 Method for large sized earth rods This procedure is based on the volt ampere metric method as well however it is mainly used whenever it is difficult to place an auxiliary current rod at a distance equal to fivefold the diagonal of the area limi
17. ere Rx is the earth resistance value Volt circuits resistance too high 2 When starting a measurement the EARTH 3W instrument checks the continuity of ba A measuring cables If the ampere gt circuit blue cable H and black cable E is interrupted or its resistance value is too high the instrument voltage displays a screen similar to the one dv OW Example for 3W mode beside Check that terminals properly connected and that the earth rod is connected to terminal H and not driven into a pebbly or scarcely conductive ground In this latter case pour water around the rod to decrease its resistance value 11 2 RC gt top is displayed when gt TheH rod sresistance RH gt is summed up to the ampere circuit gt The resistance of rod H exceeds the value 1200 100 Rx O where Rx is the earth resistance value 3 When starting a measurement the EARTH 3W instrument checks the continuity of n ar Aa measuring cables If the volt circuit gt red cable S and green cable ES and the ampere circuit blue cable H and voltage black cable E are both interrupted or their resistance values are too high Ree 2 the instrument displays a screen similar to the one beside Check that the 00 _ terminals are properly connected and that the earth rods connected to terminals S and H are not driven into a pebbly or scarcely conductive ground In this latter case
18. for repair or replacement take prior agreements with your local distributor Freight charges are up to the customer Do not forget to enclose a report describing the reasons for returning the unit as well as the detected fault Use only original packaging Any damage occurred in transit due to no original packaging will be charged anyhow to the customer The manufacturer will not be responsible for any damage to persons or things EN 23 Tali GEO416 GEO416GS 11 PRACTICAL REPORTS FOR ELECTRICAL TESTS 11 1 EARTH RESISTANCE IN TT SYSTEMS The test is aimed at checking that the RCD is coordinated with the earth resistance value It is not possible to assume an earth resistance value as reference limit when controlling the test result while it is necessary to check every time that the co ordination complies with the requirements of the Standards The parts to be checked are represented by the whole earth installation under working conditions The check is to be effected without disconnecting the earth rods The earth resistance value measured shall meet the following relation RA lt 50 1 where resistance of the earth installation whose value can be set with the following measurements Three wire earth resistance with volt ampere method Two wire earth resistance with volt ampere method Phase to earth fault loop impedance Two wire earth resistance in the socket with volt ampere method Earth resistance obtained by
19. g curve suitable rods will be chosen As the test result can be affected by metal parts buried such as pipes cables or other rods etc it is advisable in case of doubts to take a second measurement positioning the rods at an equal distance a but rotating their axis by 90 Blu Blue Azul Blau Bleu Rosso Red Rojo Rouge Rot Verde Green Vert Gr n Nero Black Negro Noir Schwarz Nero Black Negro Noir Schwarz Verde Green Vert Gr n a Rosso Red Rojo Ra a Blu Blue Azul Blau Bleu Fig 9 Measurement of ground resistivity The resistivity value is given by the following relation pe 2x a R where pe ground resistivity a distance between probes m R resistance measured by the instrument Q EN 26 Tali GEO416 GEO416GS The measuring method allows defining the specific resistivity of a ground layer up to the depth corresponding approximately to the distance a between the rods If you increase the distance a you can reach deeper ground layers and check the ground homogeneity After several measurements you can trace a profile according to which the most suitable rod is chosen Curve 1 as decreases only in depth it s advisable to use a very deep rod Curve 2 as pe decreases only until the depth a its not useful to increase the depth of the rod beyond a Curve 3 the ground resistivity is quite constant so increasing depth does not make pg decrease therefore a ring rod must be u
20. iary rods and to the installation under test see Fig 4 and Fig 5 N Press GO key the instrument starts carrying out measurement EN 10 Tali GEO416 GEO416GS 8 While the instrument is measuring a screen similar to the one beside appears where the instruments input interfering voltage value is displayed When the message displayed ni do not disconnect or touch the test 4 leads P ow 3w CAUTION When starting measurement the input interfering voltage is measured at both the volt and ampere circuit Should it range between 3 V and 9 V the instrument carries out measurement and displays the symbol indicating the uncertainty decline of the measurement 9 1 9 When the test is over should the earth resistance value be lower than the full scale the instrument emits a double tone indicating the positive outcome of the test and displays the resistance measurement as well as the interfering voltage value at the time of measuring Earth resistance measurement Input interfering voltage value 10 When the test is over should the earth resistance value be higher than the full scale the instrument emits a long tone indicating the negative outcome of the as M test and displays the screen beside D A Earth resistance gt a a a measurement higher than full scale Input interfering voltage value 11 The measurement
21. is for measurements performed at the source of a low voltage installation Examples are electricity meters and measurements on primary excess current protection devices as well as ripple control units e Measurement category Ill is for measurements performed in the building installations Examples are measurements on distribution boards circuit breakers wiring including cables bus bars junction boxes switches socket outlets in the fixed installations and equipment for industrial use as well as some other equipment for example stationary motors with permanent connection to fixed installations e Measurement category Il is for measurements performed on circuits directly connected to the low voltage installations Examples are measurements on household appliances portable tools and similar equipment e Measurement category is for measurements performed on circuits not directly connected to MAINS Examples are measurements on circuits not derived from MAINS and specially internally protected MAINS derived circuits In this latter case transient stresses are variable for this reason the norm requires that the transient withstanding capability of the equipment is made known to the user EN 3 Tali GEO416 GEO416GS 2 GENERAL DESCRIPTION This instrument will grant you accurate and reliable measurements provided that is used according to the instructions given in this manual You will enjoy the highest safety thanks to a de
22. ith an interfering voltage equal to 9V the instrument does not perform the test If Rp gt 1200 100 Rx and or gt 1200 100 Rx Re gt 50k and or Rc gt 50kQ and the instrument carries out the test the accuracy of the instrument is 10 reading where Rp resistance of the voltage circuit Rc resistance of the current circuit Re measured earth resistance Automatic selection of the range Interfering voltage measurement Range Reading V Measure V Resolution V Uncertainty 0 460 7 460 2 0 rdg 2dgt Automatic selection of the range EN 21 9 1 1 Reference standards Safety Measuring accessories safety Technical literature Insulation Mechanical protection Pollution level Measurement category Max height of use 9 1 2 General features Mechanical features Dimensions L x W x Weight including batteries Power supply Battery type Low battery indication Battery life Auto Power OFF Display Features Memory Features PC connection Features 9 2 ENVIRONMENT 9 2 1 Operating environmental conditions Reference calibration temperature Working temperature Maximum relative humidity Storage temperature 416 GEO416GS IEC EN61010 1 IEC EN61557 1 IEC EN61557 5 IEC EN61010 031 IEC EN61187 double insulation IP50 according IEC EN60529 2 CAT III 240V to earth maximum 415V between inputs 2000m 6562ft 235 x
23. n 50V in ordinary places due to the risk of electric shock The following symbols are used in this manual as well as on the instrument CAUTION Please read carefully this manual in order to understand the nature of the potential danger and the actions to undertake Refer to the instruction manual An improper use may damage the instrument or its components as well as endanger the user DC or AC voltage and current High voltage danger risk of electric shock Double insulation 1 1 PRELIMINARY INSTRUCTIONS e This instrument was designed for use in environments with pollution degree 2 e t be used for voltage and current measurements on electrical installations with CAT III 240V to earth and maximum voltage of 415V between inputs e You are recommended to respect the usual safety regulations aimed at protecting you against dangerous currents and the instrument against improper use e Only the original accessories supplied along with the instrument guarantee compliance with the safety standards in force They must be in a good condition and if necessary replaced with identical ones e Do not test nor connect to any circuit exceeding the specified overload protection e Do not take measurements under environmental conditions exceeding the limits indicated in this manual e Make sure that batteries are correctly installed e Before connecting test leads to the circuit under test check that the right function was selected
24. of input interfering voltage and rods distance set Value of rods distance set 3 A screen similar to the one beside appears where both the input interfering voltage of the instrument and the rods distance value are displayed aw 3w di t DIST UNIT a Should you need to modify the 4 IOD rods distance press the arrow keys 4 b and select DIST then pressing the arrow keys A V set the desired distance ranging from 1 up to 10 metres by steps of one or from 3 up to 30 feet by steps of three set the distance measuring 9 unit press the arrow keys 4 gt and select UNIT then pressing the arrow keys A set the desired measuring unit m or ft Measuring unit selected T L UNT 6 Connect the blue red green and black cables to the corresponding instrument s input terminals H S ES E then adding crocodiles if necessary 7 Extend if necessary the blue and red measuring cables separately using cables with proper section Adding any extension does not require calibration and does not affect the measured ground resistivity value 8 Drive the auxiliary rods into the ground placing them on a line at a mutual distance equal to that selected on the instrument Setting a distance other than the actual distance between the earth rods may affect the measurement 811 3 9 Connect crocodiles to the auxiliary rods see Fig 6 10 Press GO key the instrument starts carrying out measuremen
25. or any damage to persons or things The warranty doesn t apply to the following cases e Repair and or replacement of accessories and batteries not covered by warranty e Repairs made necessary due to improper use including adaptation to particular applications not foreseen in the instructions manual or improper combination with incompatible accessories or equipment e Repairs made necessary due to improper shipping material causing damages in transit e Repairs made necessary due to previous attempts for repair carried out by unskilled or unauthorized personnel e Instruments for whatever reason modified by the customer himself without explicit authorization of our Technical Dept e Use not provided by the instrument s specifications or in the instruction manual The contents of this manual may not be duplicated in any form whatsoever without the manufacturer s authorization Products are patented and logotypes registered The manufacturer reserves the right to modify specifications and prices in view of technological improvements or developments which might be necessary 10 2 AFTER SALES SERVICE Shouldn t the instrument work properly before contacting your distributor make sure that batteries are correctly installed and working check the test leads and replace them if necessary Make sure that your operating procedure corresponds to the one described in this manual Should you need for any reason to return back the instrument
26. pour water around the rods to decrease their resistance value 11 2 RP RC gt top is displayed when gt The 5 rod s resistance Rs gt is summed up to the volt circuit and the rod s resistance RH gt is summed up to the ampere circuit gt Both the S rod s resistance and the rod s resistance exceed the value 1200 100 Rx where Rx is the earth resistance value EN 15 Tali GEO416 GEO416GS 4 When starting a measurement if the P red cable connected to S terminal and the green cable connected to ES terminal are reversed the instrument do not perform the test emits a long sound tone and displays the screen beside Red and green cables reversed a Example under p mode Too high input interfering voltage at volt circuit Input interfering voltage value Example under 2W mode Too K input interfering iii at ampere circuit Input interfering voltage value Example under 2W mode Too high input interfering voltage at both ampere and volt circuits Input interfering voltage value Example under 2W mode 5 When starting a measurement if an interfering voltage higher than 9V is detected at the volt circuits input the instrument do not perform the test emits a long sound tone and displays the screen beside 6 When starting a measurement if an interfering voltage higher than 9V is detected at the ampere circuit s input the instrument do not perform the test emits a long soun
27. r purchase date 3 4 STORAGE After a period of storage under extreme environmental conditions exceeding the limits let the instrument resume normal measuring conditions before using it see S 9 2 1 This precaution will grant accurate measurements without risking to damage the instrument EN 4 GEO416 GEO416GS 4 WORKING INSTRUCTIONS 4 1 INSTRUMENT DESCRIPTION CAPTION Inputs ENTER v 4 0 keys key RCL CLR key Display GO key SAVE key ON OFF key OT SN Fig 1 Instrument s description ENTER key to select measuring mode Arrow keys to move the cursor selecting the required parameters X key to turn on the display backlight for 30 seconds ESC key to quit without selecting any mode RCL key to recall data stored in the instruments memory CLR key to cancel the selected measurements from the instruments memory GO key to start a measurement SAVE key to store measurements ON OFF key to turn on off the instrument 4 2 MEASURING ACCESSORIES DESCRIPTION CAPTION 1 Barrier 2 Hand Held Area Fig 2 Measuring accessories description EN 5 Tali GEO416 GEO416GS 4 2 1 Switching on When switching on the instrument a brief tone is audible along 4 2WEARTH SW MEM emmy with display of all segments for about one second D M MKOM al Measure LOW P CLR HOES af al P Ew BW li iP Subsequently the last firmware version as well
28. s be stored pressing the SAVE key twice 5 1 EN 11 Tali GEO416 GEO416GS 4 5 p GROUND RESISTIVITY MEASUREMENT The ground resistivity value is an essential parameter to calculate the resistance value of the earth rods to be used for the earth installation s construction The measurement is effected according to standards IEC 781 VDE 0413 IEC EN61557 5 CAUTION e The instrument can be used for voltage and current measurements on installations with over voltage category equal to CAT 11 240V to earth and maximum voltage of 415V between inputs Do not connect the instrument to installations whose voltages exceed the limits indicated in this manual Exceeding such limits may cause electric shock to the user and damage the instrument Always connect the cables to the instrument and to the alligator clips when the latter are not connected to the plant under test Always respect the Hand held area of probe see 4 2 If the length of the supplied cables isn t suitable for the plant under test see 11 You can create your own extensions following indications in 11 2 1 Blu Blue Azul Blau Bleu Nero Black Negro Schwarz Noir Verde Green Vert Gr n Fig 6 Ground resistivity measurement 1 Turn on the instrument pressing the ON OFF key 2 Pressing right left arrow keys gt select MOD then pressing up down arrow keys A V select p option EN 12 GEO416 GEO416GS Value
29. sed Pe QM Fig 10 Measurement of ground resistivity DIST a m 11 3 1 Approximate evaluation of intentional rods contribution The resistance of a rod Rd can be calculated with the following formulas p average resistivity of the ground a resistance of a vertical rod Rd p L where L length of the element touching the ground b resistance of an horizontal rod Rd 2p L where L length of the element touching the ground c resistance of linked elements The resistance of a complex system made of more elements in parallel is always higher than the resistance which could result from a simple calculation of single elements in parallel especially if those elements are close to each other and therefore interactive For this reason in case of a linked system the following formula is quicker and more effective than the calculation of the single horizontal and vertical elements Rd p 4r where r radius of the circle which circumscribes the link EN 27 NOTE NACL Via della Boaria 40 48018 Faenza RA Italy Tel 39 0546 621002 4 linee r a Fax 39 0546 621144 Email ht nhtitalia it Web www ht instruments com
30. see 11 You can create your own extensions following indications in 11 2 1 Whenever it is not possible to drive rods into the ground to take a three wire measurement i e historical centres it is possible to use the simplified two wire method which gives an excess value for the sake of safety To carry out the test a suitable auxiliary rod is necessary an auxiliary rod is deemed as suitable when its earth resistance is negligible and independent of the earth installation under test In Fig 4 a lamp post is used as auxiliary rod however any metal body driven into the ground can be used provided that the above mentioned requirements are met CAUTION The instrument displays the sum value of Ra Rr as result see Fig 4 and Fig 5 Therefore the measurement achieved is the closer to Ra prospective value the more negligible is the value of the auxiliary rod with respect to Ra itself In addition the measurement will be increased for safety sake by Rr i e if Ra Rr results to be coordinated with protective conductors Ra alone will be far more coordinated Blau Azul Blue Nero Black Noir Blu Bleu Negro Schwarz Rosso Red Verde Green Rojo Rot Rouge Vert Gr n PA 2253 Fig 4 Two wire earth resistance measurement using an auxiliary rod In the TT systems see Fig 5 it is possible to perform a two wire earth measurement using the NEUTRAL conductor provided by the national Energy Board taken directly from
31. t EN 13 GEO416 GEO416GS 11 While the instrument is measuring a P screen similar to the one beside appears where the instrument s input lt lt gt interfering voltage value the distance set between auxiliary rods are displayed When the message Measure Value of input interfering is displayed do not disconnect or touch the test leads When starting measurement the input interfering voltage is measured at both the volt and ampere circuit Should it range between 3 V and 9 V the instrument carries out measurement and displays the symbol indicating the uncertainty decline of the measurement 9 1 Value of input interfering N d voltage and rods distance resistivity measurement as well as the 4 set interfering voltage value at the time of _ Qo measuring 1 I 12 When the test is over should the P ground resistivity value be lower than the full scale the instrument emits a double tone indicating the positive outcome of the test and displays the Measurement of ground resistivit Om DIST UNIT CAUTION The resistivity measurement is effected with 4 wire volt ampere method without being affected by the resistance value of the cables It is therefore not necessary to effect compensation of cable resistance or of any extension 13 When the test is over should the P ground resistivity value be higher than the full scale
32. the measurement of contact voltage U Earth resistance obtained by the tripping time test of the RCDs A AC RCD S AC 7 tripping current in 5s of the automatic RCD rated tripping current of the RCD in case of RCD S 2 lan in ampere 50 safety limit voltage reduced down to 25V in special environments If the installation is protected by an RCD the measurement shall be effected upstream or downstream the RCD short circuiting it to avoid its tripping This method even though not presently provided for by standards provide values which compared with numberless reference 3 wire tests resulted to be reliable for earth resistance Example Lets assume an installation protected by an RCD l4 30 mA The earth resistance is measured using one of the methods quoted above To evaluate whether the installation resistance is complying with the standards in force multiply the result by 0 03A 30 mA If the result is lower than 50V or 25V for special environments the installation can be considered as coordinated as it meets the above said relation In case of 30 mA RCDs most civil installations the maximum earth resistance allowed is 50 V 0 03216660 permitting to use even simplified methods which though do not provide extremely accurate values give values approximate enough to calculate the coordination EN 24 Tali GEO416 GEO416GS 11 2 EARTH RESISTANCE VOLTAAMPEREMETRIC METHOD 11 2 1 Creating cables ext
33. ting the earth installation Place the current probe at a distance equal to the diagonal of the earth installation To make sure that the voltage probe is placed outside the area affected by the rod under test as well as the auxiliary rod take several measurements firstly placing the voltage probe at half way between the installation and the auxiliary current probe later moving the probe to both the installation under test and the auxiliary current probe Such measurements shall give compatible results any difference among measurement values taken indicates that the voltage rod was driven within the influence area of the installation under test or of the auxiliary current rod Such measurements cannot be considered as reliable In this instance it is necessary to further extend distance between the auxiliary current rod and the rod under test then repeat the whole procedure as above described EN 25 Tali GEO416 GEO416GS Rouge Red Rojo Rosso Green Vert Verde Grun Black Negro Nero Noir Schwarz Fig 8 Earth resistance measurement large sized earth rods 11 3 GROUND RESISTIVITY This test aims at analyzing the resistivity value of the ground in order to define the type of rods to be used when designing the installation For the resistivity test correct or not correct values do not exist The various values measured by positioning the rods at growing distances a must be quoted in a graph According to the resultin
34. velopment of newest conception assuring double insulation and over voltage category III 2 1 INSTRUMENT DESCRIPTION EARTH 2W 2 wire earth resistance measurement EARTH 3W 3 wire earth resistance measurement p 4 wire ground resistivity measurement 3 PREPARING THE INSTRUMENT 3 1 INITIAL CHECK This instrument was checked both mechanically and electrically prior to shipment All possible cares and precautions were taken to let you receive the instrument under perfect conditions Notwithstanding we suggest you to check it rapidly to check any damage which may have occurred during transport Should it be the case please contact immediately the forwarder or your dealer Make sure that all standard accessories mentioned in the enclosed packing list see S 9 3 are included in the packaging In case of discrepancies contact your dealer Should you have to return back the instrument for any reason please follow the instructions mentioned under S 10 3 2 POWER SUPPLY The instrument is powered by batteries see 9 1 2 The battery charge is displayed on the right top side The symbol indicates that batteries are fully charged while the symbol Cd indicates that batteries are low and shall be replaced To replace insert batteries follow the instructions indicated under 8 2 3 3 CALIBRATION The instrument complies with the technical specifications reported in this manual and such a compliance Is guaranteed for one year afte
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