C.A 6456
Contents
1. 39 40 Replacing the batteries ert eren dene rain hei 40 ea rm M 40 Cleaning 40 Metrological verification 40 Warranty 40 Customer service 40 qe 40 LIST OF CODED ERRORS erret rS ENEE EE Ir pue re ares rk vue ee ex Eve Y Sua ENS 41 duore ijle 41 1 PRESENTATION Portable instrument for testing and checking the safety of new and existing electrical installations loop ohmmeter Measurement functions Voltage Frequency Test of protective conductor PE Earth resistance with 2 auxiliary rods method Coupling resistance 2P method Loop impedance with display of the resistive part and of the inductive part Calculation of short circuit currents Current with clamp Selective earth resistance with clamp Execution 8 way central switch and 7 key keypad Display Backlit 160 segment LCD display unit with two simultaneous digital displays A1 and A2 4 digits to display up to 4 000 measurement points 3 decimal points for the different display ranges s amer ALARM position of the phase conduct2. 6456 ENGLISH User s manual ARNOUX CHAUVIN ARNOUX GROUP Meaning of the AN symbol WARNING Consult the user manual before using the instrument Failure to follow or carry out the instructions in this user manual that are preceded by this symbol may result in personal injury or damage to the instrument and the installations A Consult the user manual before using the instrument Thank you for purchasing a C A 6456 loop and earth ohmmeter To get the best service from this instrument E read carefully this user s manual E respect the safety precautions Z PRECAUTIONS FOR USE This instrument can be used on category Ill installations at voltages not exceeding 550V with respect to earth Category III meets the reliability and availability requirements of uses on fixed industrial installations cf EN 61010 1 A2 Never use the 6456 tester on installations having a potential greater than 550V with respect to earth Check that of the input terminals is connected and that the switch is set to OFF before opening the instrument Use connection accessories of which the overvoltage category and service voltage are greater than or equal to those of the measuring instrument 600V cat IIl Use only accessories that comply with safety standards EN 61010 031 and EN 61010 2 032 Donotimmerse the 6456 tester Repairs and metrological verifications must be carri
3. 3 3 2 WITHDRAW A COMPENSATION Set the switch to one of the LOOP RCD positions Connect nothing to the terminals or leave the leads open Then perform a long press on the TEST button During the measurement the device displays LEAd and the E 8 symbol and the dashes blink To exit from compensation of the leads perform a second long press on the TEST key Wi 04 symbol is lit steadily If the compensation has not been performed the symbol is not displayed and the compensation values are zero If the compensation of the leads is effective the At the end of the measurement the device reports that the result found is greater than 5 Q and withdraws the compensation of the leads For exit from compensation of the leads perform a second long press on the TEST key 3 3 3 POSSIBLE ERROR MESSAGES Display Indication Remark Possible cause The voltage on the terminals exceeds 2 V Check your connections The measured resistance of the leads is greater than 5 If this is not intentional to withdraw the compensation check your connections 3 4 RECORDING MEASUREMENT RESULTS MEM AN IMPORTANT Each measurement stored in the instrument is identified by 2 indices an OBJ no and a TEST no a given object OBJ generally contains several TEST nos For example an OBJ no can be used to locate an installation and the TEST nos identify the various measurements made on this installation At any t
4. 2 1 Parameter Values Default values Itage Reference voltage for the MORE x2 see 84 3 2 vo Value of the low current MORE 6 9 0r 12 mA in non tripping measurement see 4 2 2 12mA old iai SR Earth resistance threshold see 4 2 2 Loop resistance or impedance and MORE x2 4 4 2 threshold see 4 4 Measured current threshold RB x3 see 4 6 2 3 21 RESTORING THE DEFAULT CONFIGURATION This can be used to restore the delivery configuration In SET UP position n for validation and programming of the default configuration TEST m 3 3 COMPENSATION OF THE LEADS The leads must be compensated for measurements of low loop and earth resistance values in order to make the measurements more accurate If a compensation already exists the Pa symbol is displayed To view the compensation values use the MORE and P keys 3 3 1 APPLYING A COMPENSATION Setthe switch to one the LOOP RCD positions Connect one end of the three conductor cord terminated by 3 leads to the device Short circuit the 3 leads In the case of a mains outlet connect the two earth pins with the earth pins with leads Perform a long press on the TEST button At the end of the measurement the b key is used to view the values of RAL During the measurement the device displays LEAd and the symbol and the dashes blink Ran and Rape
5. 4 1 6 WARNINGS OR ERROR REPORTS Preliminary remark The complete list of coded errors is given in 7 Display Indication lt 15 3Hz or gt 65Hz or 450Hz Uu or Unpe Urre Uc 25 or 50V Remark Possible cause s One of the voltages measured U pg Or Unpe Frequency outside measurement domain depends on type of measurement Nand PE reversed N not connected N not connected and L and PE reversed In ZLINE position Permutation PE L N instead of L N PE L and PE reversed Permutation N PE L instead of L N PE In ZLINE position L and PE reversed Permutation N PE L instead of L N PE L not connected L not connected and N and PE reversed In 2P or 3P position One ofthe voltages is maximum allowed spurious voltage In ZLOOP or REARTH position Potential difference between the local earth and PE too high Press the TEST key to exit from the error conditions 4 2 2P AND EARTH MEASUREMENT 4 2 4 DESCRIPTION OF THE FUNCTION 3P and 2P earth measurements are made in a power off condition The measurements are made with two auxiliary rods 3 poles and one auxiliary rod 2 poles respectively Note however that measurements with 2 auxiliary rods are more accurate Measurement in 3P mode the instrument generates an alternating current square wave 128 Hz between terminals H and E then measures the voltage between ter
6. 4 2 choose the value of User to be used to calculate short circuit currents see 4 4 2 gt Setthe switch to ZLINE gt Connect the line power plug or 2 separate cables to the installation to be tested gt Activate the alarm by pressing the ALARM key gt Compensate of the measuring cables see 3 3 The connection diagrams are the same as for earth measurements in a live condition but without the voltage or current probe or the connection to terminal PE if this connection is made it is not taken into account see 4 3 2 4 5 3 MEASUREMENT PROCEDURE A In the case of 2 wire loop measurements there is no monitoring of the potential of terminal PE nor the installation PE line Loop measurements with 2 wires are identical to loop measurements with 3 wires except as follows the voltage between the TEST key PE is not measured only the potential between terminals Land N is measured there is no monitoring of Unpe hich enable the measurement The instrument measures voltage and voltages lee Unpe if terminal PE is connected Nota pour les mesures dans les syst mes triphas s cette imp dance doit tre mesur e entre chaque conducteur de phase et le conducteur du neutre 4 5 4 MEASUREMENT RESULTS After the measurement the measured values and complementary results can be consulted using the P gt Jana The quantities accessible before the measurement is made are described
7. Initial display wong Gers press ane ee 3 press 4 press D ALARM Initial display Ga ALARM 1 press U 2 press Ra La riz Ra aLARM Ran Za Za Ur Uu gt 3 press Ra La HE Ra aLARM Rp Za Za Up Ue UL Pressing the gt key once more causes a return to the initial display Parameters accessible in earth measurement in live condition _z mode low current Initial display More press 2 press 3 press Hz R R m ALARM 1 ni gt press Ue D gt Hz Ra Rp 3 press Up Ue Pressing the or key once more causes a return to the initial display Parameters accessible in selective earth measurement in live condition s mode high current Initial display eo press 2 press 3 press Ze n m i um Initial display er ls Rows ALARM EL st press Ra ALARM ik SEL Isev i o L Oui press Ra ALARM Zi SEL lee e press ALARM Zu SEL lee LE the gt key once more causes return to um initial display 4 3 5 CHARACTERISTICS 4 3 5 1 Measurement ranges and accuracy Particular reference conditions nominal voltage of the installation 90 to 550 V nominal frequency of use 15 3 to 65 Hz resistance in series with voltage probe lt 100 Q inductive part lt 0 1 x the resistive part of the impedance measured resistance of the cable connected to te
8. RNpe real part of impedance Zu 2 ZNPE Rp resistance of the auxiliary rod in a earth measurement in a live condition Rs resistance of the auxiliary rod S resistance of an additional earth electrode used as a probe used to tap the potential during the measurements standard NF EN 61557 U fault voltage as per standard NF EN 61557 Une voltage between terminals H and E UL conventional limit contact voltage 25 or 50 V adjustable in the SET UP mode see 3 2 Uin voltage between terminals Land Uie voltage between terminals L and PE Unpe voltage between terminals N and PE Up voltage between the voltage probe auxiliary rod and PE Urer reference voltage for calculation of the short circuit current Use voltage between terminals S and E Ze global earthing impedance Zin 5 Zuse ZNPE impedance of the loop between L and between L and PE and between and PE Z ALARM loop impedance threshold 6 MAINTENANCE 6 1 REPLACING THE BATTERIES The remaining battery charge level is indicated by the When the battery is flat the symbol t flashes the instrument emits an audible stop signal 5 beeps then automatically switches to standby When the battery is low display of the BAtt message indicates that the measurement requested requires too much energy and cannot be made Note when rechargeable batteries are used this fact must be entered in the configuration of the instrument
9. When the TEST key is pressed the instrument checks that the amplitude and frequency of the voltages present are correct checks the resistance of the auxiliary rod interchanges L and N internally if the 2 conductors are reversed in the socket measures the voltage between the TEST key and terminal PE If these quantities are correct the instrument generates according to the user s selection a high current tripping mode 5 or a low current non tripping mode o 5 on 30mA RCD or more between terminals L and PE and measures the voltage drop between terminals P and PE m Ifthe user selects measurement without tripping the current generated is low the instrument measures RA global earth resistance Note if during a earth measurement at low current a earth fault breaker in the circuit still trips measure the leakage current with the current probe using the current measurement function of the instrument then change the measuring current Leer see 4 2 2 with allowance for this leakage current Otherwise short circuit the circuit breaker concerned and make the next measurement at high current for greater accuracy m Ifthe user has selected measurement with tripping or if they have connected the current probe to make a selective measurement the current generated is high arrangements may have to be made to prevent the earth fault breaker from tripping e g temporary shunting of the breaker The inst
10. above in 4 1 4 display 1 2 3 press 4 press b press Initial display Zu ALARM 1 press eee Zu ALARM 2 press SS Zu ALARM Pressing the gt onejkey once more causes a return to the initial display 4 5 5 CHARACTERISTICS 4 5 5 1 Measurement ranges and accuracy The particular reference conditions are the same as for 3 wire loop measurements see 4 3 5 The characteristics are the same as for earth measurements in a live condition see 4 2 5 1 4 5 5 2 Influencing quantites Same as for earth measurements in a live condition see 4 2 5 2 4 5 6 WARNINGS OR ERROR REPORTS Same as for earth measurements in a live condition see 4 2 6 except as follows the rod and the current probe are not taken into account error management on only measurement between the TEST key and PE not taken into account 4 6 CURRENT MEASUREMENT Ga 4 6 1 DESCRIPTION OF THE FUNCTION Inthe G position the instrument measures the alternating current continuously without the TEST key being pressed The instrument deduces the current flowing in the cable s clamped by the probe according to the transformation ratio of the probe 4 6 PREPARATION OF THE MEASUREMENT CONNECTION gt Connect the clamp to the measuring instrument specific triple socket designed to avoid connection errors gt Setthe switch to G Clampthe cable of which the
11. loop or earth measurements in live condition f 2 15 3 to 65Hz correct connection of the measuring cables terminals connected and not interchanged Toute interdiction de mesure est accompagn e d un message d erreur voir 7 d un bip d erreur et de l affichage clignotant du symbole A 3 2 INSTRUMENT CONFIGURATION SET UP gt Setthe rotary switch to the SET UP position The parameter or value configured is validated upon return to the PUSH btn screen Warning if the switch is turned before the return to the PUSH btn screen the modified data are lost The table below indicates the various parameters that can be configured and their programming sequence Remark generally changes from ON to OFF and or changes of the values of the parameters are effected using the av key Parameter Values Default values Euro JJ MM User Time Date successive adjustable HH MM Type of power supply oan bAtt niMH Activate deactivate automatic 2 OFF shutdown Automatic shutdown time 3 01 to 59 mm H A Activate deactivate the buzzer av OFF serial no Display the internal parameters of software version successive the instrument date of calibration LCD screen Number of measurements in 2 TEST SMOOTH mode 239 res 2to5 Printing of configuration Printer configuration n data rate P 300 to 9600 bauds Default configuration res see 83
12. 0 5pt 15 5pt measurement 9 The measuring current is that measured by the current probe 4 No measurement of the inductive part in selective mode Characteristics common to all measurement modes Max resistance acceptable in series with the voltage probe 15 Accuracy of measurement of the resistance in series with the probe 20 10 pt resolution 0 1 display range 400 0 4 3 5 2 Influencing conditions Influencing Limits of the domain Variation of the measurement quantities of use Temperature 1 P ibd LUC Relative humidity 10to 85 HRat 45 Power supply voltage 6 8to 10 V 1 96 V 1 2 9o V 2 pt Network voltage of the 99 to 101 96 of nominal 0 596 1 96 4 1 pt installation tested frequency Network voltage of the 85 to 110 96 of nominal 0 596 1 96 4 1 pt installation tested voltage Resistance in series qith the voltage probe earth in live 0to 15 0 1 kQ 0 2 KQ 1 pt condition only Contact voltage Uc 0to 50 V 0 1 10V 0 2 10 V 43 6 WARNINGS OR ERROR REPORTS EARTH MEASUREMENT IN LIVE CONDITION Preliminary remark The complete list of coded errors is given in 7 Affichage Indication Commentaire Cause possible He Voltage gt U between the TEST key and PE the measurement U gt 25 ou 50V is disabled One of the voltages is lt 90 V the measurement is impossible 15 3H H SE The frequency o
13. 50 BAREGGIA DI MACHERIO MI T l 039 245 75 45 Fax 039 481 561 SCHWEIZ Chauvin Arnoux AG Moosacherstrasse 15 8804 AU ZH T l 44 727 75 55 Fax 44 727 75 56 Chauvin Arnoux Middle East P O BOX 60 154 1241 2020 JAL EL DIB T l 18 90 425 Fax 18 90 424 CHINA Shanghai Pujiang Enerdis Inst CO LTD 3Rd Buildind N381 Xiang De Road 200081 SHANGHAI T l 21 65 21 51 96 Fax 21 65 21 61 07 USA Chauvin Arnoux Inc d b a AEMC Instruments 200 Foxborough Blvd Foxborough MA 02035 T l 508 698 2115 Fax 508 698 2118 UNITED KINGDOM Chauvin Arnoux Ltd Unit 1 Nelson Court Flagship Square Shaw Cross Business Park DEWSBURY 99132 WEST YORSHIRE WF 127TH T l 1 924 460 494 Fax 1 924 455 328 http www chauvin arnoux com 190 rue Championnet 75876 PARIS Cedex 18 FRANCE T l 33 0 1 44 85 44 85 Fax 33 0 1 46 27 73 89 info chauvin arnoux fr Export T l 33 0 1 44 85 44 38 Fax 33 0 1 46 27 95 59 export chauvin arnoux fr
14. SET UP mode to prevent incorrect operation of the instrument risk of erroneous measurements or malfunction of the instrument A Check that none of the input terminals are connected and that the switch is set to OFF before opening the instrument When the batteries are removed there is enough reserve energy to preserve the date and time for one minute If this time is exceeded the instrument when next started up prompts the user to check the date and time by displaying the flashing message tIME for 2 seconds before displaying new measurements 6 2 STORAGE If the instrument is to be stored for more than 2 months remove the batteries It will then be necessary to reset the instrument s time when it is next used 6 3 CLEANING Clean the housing of the instrument regularly This can be done with a damp cloth or soapy water Do not use alcohol solvents or hydrocarbons 6 4 METROLOGICAL VERIFICATION Like all measuring or testing devices the instrument must checked regulary This instrument should be checked at least once a year For checking and calibration contact one of our accredited metrology laboratories information and contact details available on request at our Chauvin Arnoux subsidiary or the branch in your country 6 5 WARRANTY Unless otherwise stated our warranty is valid for 12 months following the date on which the equipment is made available extract from our General Conditions of Sale a
15. ation of the instrument the switch to OFF when the instrument is not in use 2 7 KEY KEYPAD The functions of the various keys as follows for all the settings of the switch EXCEPT the SET UP position see 3 2 Touche 2 29 press on other key gt access the secondary function of the key in question written in yellow italics below each key gt display the current time and date as long as the key is kept pressed Touche TEST SMOOTH ES RH V start stop a measurement except for voltage and current measurements which are made directly and exit from the error mode TEST gt compensation of the measuring cables id re87 gt smooth the measurement SMOOTH mode SMOOTH Touche MORE ALARM gt display the measurements and or complementary calculations of a function possibly in association with the key gt Aa gt activate deactivate the alarm function gt gt display the measurements and or complementary calculations of a function possibly in association with the MEM MR gt select the memory block OBJ or line TEST for storage gt retrieval on screen or printing a PRINT MEM x gt switch the backlighting of the display unit on off Key av with the switch set to and or ZLINE gt select the type of measurement tripping so or non trippi
16. current is to be measured gt f necessary in the SET UP mode set alarm threshold lai 2 av direction of alarm gt or gt location of decimal point Av h setting of the values of each of the 4 digits Selected by successive presses on the keys gt lf necessary activate alarm threshold la by pressing the ALARM key 4 6 3 MEASUREMENT PROCEDURE The measurement is started automatically and is continuous 4 6 4 MEASUREMENT RESULTS The measured values and complementary calculated results are described in the table of 4 1 4 position G of the switch 4 6 5 CHARACTERISTICS 4 6 5 1 Measurement ranges and accuracy Particular reference conditions peak factor 1 414 DC component lt 0 1 operating frequency domain 15 3 to 450 Hz Characteristics with an MN 20 current probe Display range CIT Specified measurement domain 5 0 399 9 mA 0 400 3 999A 4 00 20 00A 2 10 15 2 Les Note in measurement of Lo the accuracy is ancreassed by 5 Characteristics with an C172 current probe Display range CIT Specified measurement domain 5 0 399 9 mA 0 400 3 999 A 4 00 20 00A 2 10 pt 159 2 ph Gen 4 6 5 2 Influencing conditions Influencing Limits of the domain of quantities use Typical Temp rature 10t0 55 2 10 C 2 pt 1085 HR at 45 C 3 2pt Common mode reject
17. ed in a zone that is not influenced by other earth electrodes move it 1096 of the distance and repeat the measurement The result must not change or just from few 4 2 3 MEASUREMENT PROCEDURE Press the TEST key The instrument measures voltages and Use If the measurement is possible the instrument checks the resistances of rods S and H if they are correct the instrument makes the measurement and displays it To make a 2P measurement plant a single rod and connect the measuring cables to terminals H and E of the instrument The measurement proceeds in the same way as a 3P measurement 424 MEASUREMENT RESULTS After the measurement the measured values and complementary results can be consulted using the and keys The quantities accessible before the measurement is made are described in 4 1 4 Parameters accessible in the 2P setting Initial display 1 press 2 press 3 press Rae Initial display Re ALARM Une Pressing the key once more causes a return to the initial display Parameters accessible in the 3P setting Initial display 1 press 2 press 3 press Initial display E ALARM gt Pressing the or key once more causes a return to the initial display 4 2 5 CHARACTERISTICS 4 2 5 1 MEASUREMENT RANGES AND ACCURACY Particular reference resistance of auxiliary earths lt 100 Q conditions resistance of the cable connected to terminal E of the instrume
18. ed out by approved qualified personnel WARRANTY Unless otherwise stated our warranty is valid for twelve months 12 months following the date on which the equipment is made available extract from our General Conditions of Sale available on request SOMMAIRE PRESENTATION pe Environmental conditions Compliance with standards xe d lo d DESCRIPTION me 6 Ki lH5MUlc 9 A tomatic Checks aiir HP 9 Instrument configuration SET UP 10 Compensation of the leads ibl Recording measurement results MEM 13 Recalling recorded values MR 13 Erasingirecorded values e eterne tenen nne ted rna ann 14 Printing measurement results PRINT esses 15 Printing recorded values PRINT MEM nennen nennen nennen 15 MEASUREMENTS 16 Voltage measurement 16 2P and 3P earth measurement 221 Earth measurement in live condition REARTH 25 3 wire loop measurement Z LOOP 92 2 wire loop measurement Z LINE eere eee innen enne nn 35 Current measurement Os RE REN 37 GLOSSARY
19. ent and any error is on the safe side In TT and TN networks this function can also be used to check and size the protective systems in place by arapid and easy measurement of the loop impedances between L and PE L and N and N and PE This function can also be used to calculate the corresponding short circuit currents sizing of fuses and circuit breakers Note that the instrument allows measurement of loop impedance LPE behind 30mA circuit breakers without causing them to trip principle patented by Chauvin Arnoux In an IT network use the instrument s ZLINE function The measurement principle is the same as for an earth measurement a live condition When the TEST key is pressed the instrument checks that the amplitude and frequency of the voltages present are correct measures the voltage between the TEST key and terminal PE interchanges L and N internally if the 2 conductors are reversed in the socket generates a current high or low according to the user s selection between terminals L and PE measures loop impedances Zu 41 et ZNPE Note the measurement of Z n does not trip the earth fault breakers even with high currents 4 4 2 PREPARATION FOR THE MEASUREMENT CONNECTION gt f necessary in SET UP mode set threshold voltage U see 3 2 the type of compensation of the oe cables see 3 3 set the alarm threshold Z or R see 4 2 2 possibly select a value of User to be used for t
20. eters accessible in the current measurement setting EMEN Initial display 1 press 2 press Initial dispaly lALARM 19 press laLARM nd 2 press laLARM Pressing the o MORE key once more returns to the initial display 4 1 5 CHARACTERISTICS 4 1 5 1 Measurement ranges and accuracy Frequency AN the value displayed is guaranteed only for a voltage 2 10 VRMS all settings of the switch except or in the G4 position for a current 2100 mARMS Display range mv mm Voltage Specified measurements eun domain 0 79 9V 80 0 399 9 V 400 550 V DC or RMS Measurements of 4 5pt 2 1pt 2 1pt the potential of Input impedance peo the voltage probe Operating frequency DC and 15 3 450 Hz Specified measurement 2 0 100 0 V main do Contact 1596 2 pt 45Hz freq 65Hz voltage 1 Input impedance 4 5 MQ in series with 4 7 nF measurement Operating es 9 SS ER Display range 400 Hz 4000 Hz Frequency occid ecifie measurement 15 3 399 9 Hz 400 450 Hz TH DEER 4 1 5 2 Influencing conditions Influencing Limits of the domain Variation of the measurement Temperature 10 55 1 10 C ipt 2 10 C 2pt Relative humidity 10 to 85 HR at 45 C 3 2pt POwer supply voltage 6 8 to 10 V 1 V 1 2 V ae Series mode rejection in AC 50 60Hz series mode reiection in DC 0 to 500 V DC 50dB 40dB Common mode rejection in 50 60Hz AC
21. f Uin Urre or Unpe is lt 15 3 Hz or gt AN Unpe ou Urpe 65 Hz the measurement is impossible Resistance of the auxiliary rod too high the measurement is stopped Connection of a current probe after selection of measurement without tripping the instrument automatically reverts to measurement with tripping and reports the fact During the measurement Up exceeds the value set in the SET UP mode the measurement is stopped During a selective measurement the product of the current measured by the current probe and the measured voltage is too low the measurement is stopped During a selective measurement the current measured by the current probe is too unstable the measurement is stopped The temperature ofthe instrumentis too high the masurement is stopped Pressing the TEST key has no effect until the temperature of the instrument is again below 60 C another measurement can then be started Press the TEST key to exit from the error conditions 4 4 WIRE LOOP MEASUREMENT 2 LOOP 4 4 1 DESCRIPTION OF THE FUNCTION In a TT network measurement of loop impedance LPE is a rapid and practical way of checking a earth resistance without planting auxiliary rods In this case the measurement includes the earthing resistance of the power supply transformer of the installation and the resistance of the distribution cables It is therefore a high earth measurem
22. he calculation of the short circuit current E location of decimal point av setting of the values of each of the 4 digits selected by successive presses on the s e possibly select a value of Uger to be used for the calculation of the short circuit current direction of alarm gt or selection of voltage MEAS 230 400 127 ou MEAS 220 380 110 gt the current generated for the measurement in low current mode see 4 2 2 set the number of measurements to be counted to smooth the measurement see 3 2 gt Set the switch to the ZLOOP position gt Activate the alarm by pressing the ALARM key gt Connect the line power plug or the separate cables to the installation to be tested gt Compensate the measuring cables see gt Select the measuring current press n Gas gt high 5 5 for a greater accuracy if no tripping of a earth fault breaker is foreseen measurement made upstream of the RCDs if the earth fault breaker concerned is short circuited for greater accuracy gt low 575 otherwise for a rapid check The connection diagrams are the same as for earth measurements in a live condition but without the voltage or current probe see 4 2 2 4 4 3 MEASUREMENT PROCEDURE The instrument first checks the resistance of the rod and measures the voltage between PE and earth then mea
23. ic voltages are too high in 2P 3P measurement the voltage exceeds the safety limit in terms of contact voltage Backup memory full action delete stored data 8 TO ORDER C A 6456 earth and loop tester P01123512 Delivered in a carrying bag containing 1 measuring cable for Euro mains socket 1 measuring cable 3 separate leads crocodile clips red yellow and white 8 contact pins red yellow and white 1 pouch with neck strap 1 optical communication cable data processing software program 6 LR6 batteries 1 5V 1 user manual 6456 T P01123513 Same as above a earth kit comprising two rods three cables on reels terminated by clips red 30m blue 30m green 10m and a mallet ACCESSORIES C172 current probe P01120310 MN20 current probe P01120440 serial printer P01102903 Earth kit P01101823 07 2011 Code 689909B02 Ed 1 DEUTSCHLAND Chauvin Arnoux StraBburger Str 34 77694 Kehl T l 7851 99 26 0 Fax 7851 GmbH Rhein 99 26 60 ESPANA Chauvin Arnoux Ib rica S A C Roger de Flor N 293 Planta 1 08025 BARCELONA T l 902 20 22 26 Fax 934 59 14 43 OSTERREICH Chauvin Arnoux Ges m b H Slamastrasse 29 2 4 1230 WIEN T l 161 61 961 Fax 161 61 961 61 SWEDEN Chauvin Arnoux M tsystem AB Sj flygv gen 35 Box 4501 18304 TABY T l 850 52 68 00 Fax 850 52 68 10 ITALIA A M R A SPA Via Sant Ambrogio 23 25 200
24. ics of calculation of short circuit current Display range 400A 4000A 40kA Accuracy Resistances impedances Accuracy values indicated for earth measurements in a live condition see 4 2 5 Short circuit current Accuracy of impedances accuracy of measuremnt of voltage Umes if it is used Calculation formula Ik Unger 2 OU Zine 4 4 5 2 Influencing quantities Same as for earth measurements in a live condition cf 4 3 5 2 4 4 6 WARNINGS OR ERROR REPORTS ZLOOP LOOP MEASUREMENTS Preliminary remark The complete list of coded errors is given in 7 Same as for earth measurements in a live condition except for the rod and the current probe measurement which do not apply to loop measurements see 4 3 6 4 5 WIRE LOOP MEASUREMENT Z LINE 4 5 4 DESCRIPTION OF THE FUNCTION This function measures the line impedance between conductors L and N of the power network This measurement can also be used to calculate short circuit currents in order to size fuses and circuit breakers It is possible to check the impedance between conductors L and PE or between two L conductors but the measuring cables must systematically be connected to terminals L and N of the measuring instrument 4 5 2 PREPARATION DE LA MESURE BRANCHEMENT PREPARATION FOR THE MEASUREMENT CONNECTION gt f necessary in SET UP mode set the threshold voltage U see 3 2 set the alarm threshold Z ou see 4
25. ime the user can store the result of a measurement and all of the parameters associated with the measurement date time type of measurement measurement parameters etc The location proposed by default is the first free memory location easurement to be stored MEM 03 06 OBJ TEST 9 selection of storage address using the following keys FrEE O mesure m moris e storage atthe selected address 1 FrEE the selected memory location is free OCC the selected memory location is occupied 2 whether the location selected is occupied or not previously recorded values are overwritten Note Up to 100 measurements be stored e g 10 objects each having 10 tests or any other combination 3 5 RECALLING RECORDED VALUES MR E _ MR The group of measurements OBJ and the measurement TEST to be retrieved on the display unit are selected using De p gt keys 3 6 ERASING RECORDED VALUES The memory of the instrument can be erased totally or partially in the SET UP rotary switch position Complete Erasure of a memory block Erasure of a memory line erasure of the OBJ TEST memory OBJ TEST OCC Selectthe Selectthe memory memory block OBJ line TEST to erase to erase 02 07 02 07 OBJ TEST OBJ TEST FrEE FrEE 3 7 PRINTING MEASUREMENT RESULTS PRINT print the measurement made and all of the parameters attached to it Examples of
26. injection loop from 15 3 to 450Hz H E Current loop rod 0 5 10kQ 1 10kQ resistance Ry 0 015 Ry 0 015 Ry Voltage loop rod 0 5 10kQ 1 10kQ resistance Rs 0 to 50 0 015 Rs 0 015 Rs Except at 128 Hz 0 2 V 1 pt 4 2 6 WARNINGS OR ERROR REPORTS 2P OR 3P EARTH MEASUREMENTS Preliminary remark complete list of coded errors is given in 7 Display Indication Remark Possible cause Hz or Une or Use is gt 30V the measurement is affected Une OU Use gt 30V Try to move rods H and S resistance on rods H or S too high or earth resistance too high or spurious voltages too high Check the connections and the auxiliary rods Press the TEST key to exit from the error conditions If the value of Re is negative it means that the rod resistances are too high or the spurious voltages are too high or the compensation of the cables is wrong It must be done over with the cables actually used see 3 3 4 3 EARTH MEASUREMENT IN LIVE CONDITION REARTH 4 3 1 DESCRIPTION OF THE FUNCTION m This measurement is made with a single auxiliary rod voltage probe connected to terminal P d yielding a saving of time with respect to a conventional measurement with 2 auxiliary rods m specific additional current clamp is necessary to make a selective earth measurement he instrument automatically detects the connection of the voltage and current probes
27. ion in 0 to 500 VAC 50 dB 40 dB AC 50 60Hz en DC 4 6 6 WARNINGS OR ERROR REPORTS Oz Preliminary remark The complete list of coded errors is given in 7 The clamp is not connected the measurement is impossi Press the TEST key to exit from the error conditions 5 GLOSSARY Hz frequency of the signal current ALARM current threshold 5 short circuit current between terminals L N L and PE N and PE ke current flowing in the current probe during a selective earth measurement ina live condition Le inductive part of Ze Lin Live Lure inductive part of impedance Zu 4 ZNPE R4 global compensation between 2 terminals 2P and ZLine Rae compensation of the cable in terminal E Rat compensation of the cable in terminal L Ran compensation of the cable in terminal N Rape compensation of the cable in terminal PE Re global earthing resistance R4 earth resistance in earth measurement on live circuit Raser selective earth resistance Fi ALARM earth resistance alarm threshold Re ALARM alarm threshold for earth resistance measurements Ru resistance of the auxiliary earth electrode resistance of an additional earth electrode necessary for the measurements through which the current flows standard NF EN 61557 Ri ALARM sloop resistance threshold Rin 3 Rupe
28. minals S and E from this voltage and the current generated it deduces global earthing resistance Re Measurement in 2P mode the instrument generates a signal between terminals H and E measures the voltage on terminal H and deduces resistance Re 4 2 2 PREPARATION FOR THE MEASUREMENT CONNECTION gt In SET UP set the value of the no load voltage generated by the instrument 50 V or 25V in a damp environment see 3 2 gt lf necessary m adjust the alarm Dec at an inthe SET UP mode Te v 88 88 LLL direction of alarm gt or gt av 88 88 location of decimal point gt av setting of the values of each of the 4 digits selected by successive presses on the s e m activate the alarm by pressing the ALARM key and 2nd key after SET UP exit An overshoot of an alarm threshold during a measurement is indicated by a continuous audible signal m compensate the measuring cables see 3 3 gt Cut off power to the installation and disconnect the earth of the installation gt Set the switch to 2P or 3P gt Then connect the measuring cables to the instrument and to the rods complying with the following distances and connections example of connection for 3P measurement 25 S H S rod H rod th electrod earth electrode saa Remark to be sure that rod S is locat
29. ng mode s o p gt incrementthe value of the memory block OBJ or line TEST and gt decrement the value of the memory block OBJ or line TEST PRINT MEM Key MR gt store a measurement and all information linked to it GI display stored measurements MR Key PRINT PRINT MEM gt printthe last measurement made 2 Gen PRINT gt print the selected part of the memory part or all 3 BACKLIT LCD DISPLAY UNIT 4 OPTICAL SERIAL COMMUNICATION INTERFACE 5 SAFETY INPUT TERMINALS dia 4mm marked L PE and P terminal used for earth measurements in alive condition AN maximum voltage with respect to earth 550 V 6 MARKED SOCKET Oz FOR THE CONNECTION OF A CURRENT CLAMP 3 GENERAL USE The measurements are made directly voltage frequency and current if a clamp is connected or by pressing the TEST key Voltage and or frequency measurements are accessible in all active settings of the switch 3 1 AUTOMATIC CHECKS 3 1 1 POSITION OF PHASE MAINS SOCKET CHECK Upon connection the instrument measures the voltages between conductors L N Uw between conductors L and PE Utre between conductors and PE and between the voltage probe if a rod is connected to the terminal P and conductor The conductor that has the highest potential is taken to be the phase designated by the let
30. nt compensated The instrument automatically selects one of two measurement currents according to the sum of Re and Rh as well as the set voltage limit Ry Re 2 9 KQ at 50V or Ry Re 2 4 5kQ at 25V Measuring current 5mA Display range 400 400 Q 4000 Q Specified measurement domain Accuracy t 2 Spt t 296 2pt Measuring current 5mA Max acceptable resistance or 4 kQ 25 V in the current loop Ry Re 2 9 at 50 V or Ry Re 2 4 5 at 25 V Measuring current 500 pA Display range 400 Q 4000 Q 40 00 kQ Specified measurement domain 0 5 399 90 400 3999 Q 4 00 39 99 KQ 2 5pt 2 2 Measuring current 500 HA Max acceptable resistance 45 kQ in the current loop Common characteristics Maximum acceptable resistance 50 ko in the voltage loop 0 50 39 990 40 0 39990 400 3999 Q 128 Hz No load voltage 25 V or 50 V Accuracy of rod A 5 5pt resistance measurements 4 2 5 2 Influencing conditions Limits of the domain Variation of the measurement Typical Temperature 10 to 55 1 10 C 1pt 2 10 C 2pt Relative humidity 10 to 85 RH at 45 C 2 396 2 pt Influencing quantities Power supply voltage 6 8 to 10 V 196 V 1pt 2 V 2pt Voltage in series in the 01030 n o a from 15 3 to 450Hz Except at 128 16Hz 0 2 V 1 pt Voltage in series in the Green 0to 30 V current
31. or object number for storage main display unit A1 measurement without triggering of residual current differentials RCD low power signal measurement with triggering of RCD full power level auxiliary earth rod detected measurement smoothed for display audible buzzer activated alarm function activated or display of an alarm threshold communication in progress serial link battery charge level secondary function activated WARNING indicator if it appears refer to the manual 1 4 ENVIRONMENTAL CONDITIONS 10 Temperature Service conditions 10 to 55 C storage and transport without batteries 40 to 70 C P RH without cond Service conditions 85 max storage and transport without batteries 90 max Tightness IP54 as per standard NF EN 60 529 1 2 COMPLIANCE WITH STANDARDS 1 21 GENERAL The instrument complies with the following standards EN 61010 1 NF EN 61557 parts 1 3 5 and part 10 EN 60529 EN 50102 UL 94 1 22 SAFETY The instrument complies with the requirements of standards EN 61010 1 and EN 61557 i e Service voltage 550 V measurement category IIl with double insulation level of pollution 2 1 2 3 ELECTROMAGNETIC COMPATIBILITY The device is in conformity with standard IEC 61326 1 Emissions Requirements on class B equipment Immunity Requirements on equipment used in discon
32. ormer of the installation must not be completely isolated but earthed through an impedance the installation must also not be in first fault start by checking the indication of the Permanent Insulation Tester concerned the grounds to earth Ra and the earth of the power supply transformer must be separate to allow the circulation of the measuring current O L1 Connect the mains socket or the 3 separate cables to the installation to Yyy SEI 12 be tested L3 gt Plant the auxiliary rod at a distance gt 25 m from the earth electrode N 2 4 3 3 MEASUREMENT PROCEDURE The instrument first checks the resistance of the rod and measures the voltage between PE and earth then measures the voltages Urre Unpe If these values are correct pressing the TEST key starts the measurement Remark to be sure that the auxiliary rod is located in a zone not influence by other earth electrodes move the rod 1096 of the distance and repeat the measurement The result must not change If it does move the rod until the earth measurement remains unchanged 4 3 4 MEASUREMENT RESULTS After the measurement the measured values and complementary results can be consulted using the and vong keys The quantities accessible before the measurement is made are described above in 4 1 4 Parameters accessible in earth measurement in live condition 5 mode high current
33. printing tickets LOOF currenti automatic range Z limit 100 O TIME 17 04 04 02 16 Instr Ne 100033 106 U ref 230 V zIeXI T KEE S D EE Seege 1 5 e 154 7 UEN raua 227 VM U L PE 226 V U N PE ov Serene es 50 1Hz Remark In the SET UP position pressing the PRINT key triggers printing of the configuration of the instrument 3 8 PRINTING RECORDED VALUES PRINT MEM Recorded values can be printed with the switch in any position except SET UP or OFF PRINT MEM 01 01 1 memory location used 06 05 last memory location used between he 1st and last memory location selected Printing of all measurements EARTH current no trip 3 0mA Ra limit 100 0 OS dec 154 2 9 U L N 227 H L FE 227 V U N PE 50 0Hz U S PE DM 4 MEASUREMENTS 4 1 VOLTAGE MEASUREMENT 4 1 1 DESCRIPTION OF THE FUNCTION Voltage measurement is accessible with the switch in any position except SET UP or OFF 4 1 2 PREPARATION OF THE MEASUREMENT CONNECTION Switch the instrument on OOO e 7 L1 gt Connectthe instrument to the installation using mmm 12 the measuring cable terminated by mains plug AT 1 x e gt Use the separate cables to make the connection PE 41 3 MEASUREMENT PROCEDURE Once connected the instrumen
34. r greater accuracy in the case of a selective measurement using a current probe gt low gt for a quick check Make the connections as indicated below according to the type of installation to be checked gt Compensate the measuring cables see 3 3 Case of an installation with a TT type neutral situation Connect the mains socket or the 3 separate cables to the installation to be tested Plant the auxiliary rod at a distance gt 25 m from the earth electrode Case of an installation with a TN type neutral situation selective measurement t L1 L2 gt Connect the mains socket or the 3 separate cables to the installation to be tested gt Connect a current probe to the terminal and encircle the earth of which the resistance is to be measured the current used to calculate Z se is that measured by the probe gt Plant the auxiliary rod PE as close as possible to the earth electrode to be measured for a measurement that is as accurate as possible gt Compensate the cables Note without the current probe what is measured is the global earth of the network which is not very significant Connecting the clamp configures the instrument in the tripping mode power level current L3 PE Case of an installation with an IT type neutral situation not isolated Preliminary remarks the power supply transf
35. rminal PE corrected contact voltage 5 V potential of terminal PE with respect to the local earth Characteristics of the measurements Characteristics in high current mode tripping mode 4 Charge duration 300ps cycle Specified measurement 0 20 1 99 0 2 00 19 99 20 00 39 99 Q 40 0 399 9 Q 400 39990 domain Peak measuring current between 1 06 to 3 25 0 9010 3 25A 0 7910 2 83A 0 24t02 47A 0 03100 76 90V and 280V Peak measuring current between 1 27 to 2 73A 1 20102 71 1 13102 57 0 55t02 42A 0 0810 1 18A 280V and 550V Accuracy of the impedance measurement Additional error Max inductance acceptable for the measurement 20 mH display range 400 0 mH 10 26 15 pt 596 15pt 5 5 5 2 Characteristics low current mode non tripping mode 575 Charge duration cycle of one network frequency period Display range 4002 400 Specified ER 0 5 1 90 2 0 19 90 20 0 399 92 400 39990 RMS ee 6 9 12 mA adjustable in SET UP mode see amp 3 2 curren Accuracy of the resistance 15 10 pt 15 5pt measurement No measurement of the inductive part in low current mode Characteristic in selective mode Charge duration 300 hs cycle Display range 4000 Q Specified measurement 0 5 1 90 2 0 19 9 0 20 0 399 92 400 3999 Q domain Peak measuring Accuracy of the resistance 15 5 1
36. rumen measures Z4 the global earthing impedance Ra and La the resistive and inductive parts of Z4 Remarks Ifthe user selects measurement without tripping 5 5 and connects a current probe the instrument reverts to measurement with tripping and reports the change Ifthe user connects the current probe it is the current measured by this probe that is used to calculate Ra The lower this current the more unstable the measurement is likely to be in this case smooth the measurement using the SMOOTH function 4 3 2 PREPARATION FOR THE MEASUREMENT CONNECTION AN The instrument must be connected to the network in a live condition and the earth electrode to be measured must not be disconnected gt f necessary set in the SET UP mode m U see 3 2 m the current generated for the measurement at low current SSC Eg Selection of current MORE twice to exit from programming m The type of compensation of the measuring cables see 3 3 m the alarm threshold Z4 or Ra m the number of measurements to be counted to smooth the measurement see 3 2 Setthe switch to the REARTH position gt Activate the alarm by pressing the ALARM key gt Select the measuring current press gt high 56 for a greater accuracy if there is no tripping of a earth fault breaker measurement made upstream of the RCDs ifthe earth fault breaker concerned is short circuited fo
37. sures voltages y pe UNpE Ifthese values are correct pressing the TEST key starts the measurement as soon as the result is available itis displayed Note for measurements on three phase systems the loop impedance must be measured between each phase conductor the neutral conductor and the protective conductor 444 MEASUREMENT RESULTS After the measurement the measured values and complementary results can be consulted using the and keys The quantities accessible before the measurement is made are described above in 4 1 4 display 1 4 dpress 5 press Initial display Z ALARM 1 press oe Z ALARM P press suem Z ALARM Pressing the or key once more causes a return to the initial display Note In non trip mode the inductive component is not measurable due to the weak test current The values Lipe Lupe Zuse are not displayed display shows The value L pe is displayed in the Liy field 4 4 5 CHARACTERISTICS 4 4 5 1 Measurement ranges and accuracy Particular reference conditions nominal voltage of the installation 90 to 550V nominal frequency of use 15 3 to 65Hz inductive part lt 0 1 x the resistive part of the impedance measured The characteristics of loop measurements with 3 wires with o o or without tripping 5 are the same as those of earth measurements in a live condition with or without tripping respectively see 4 3 5 1 Characterist
38. t indicates any voltage s present on its terminals AN Do not use the instrument on an electrical installation exceeding 550 V with respect to earth 41 4 MEASUREMENT RESULTS The measured values and complementary results can be consulted directly using the and Keys whatever the setting of the switch Parameters accessible in the 3P Initial display 1st JE 2 press Pressing the More wore or me once more returns to the initial display Parameters accessible in the 2P Initial display press 2 press Initial display e ALARM Pressing the key once more causes a return to the initial display Parameters accessible in the REarth setting Initial display wore Een 5 2 ZZ Ra ALARM ULPE 3 press Up Ra ALARM UNPE Pressing the or key once more returns to the initial display Parameters accessible in the ZLoop setting O ia TY Initial dispaly ALARM 1 press Urer ZL ALARM UL 2 press 1 press UREF ZLALARM 2 press UREF ZLALARM Pressing the p gt or key once more returns to the initial display Parameters accessible in the ZLine setting Initial display Initial dispaly 1 press Urer ZL ALARM 2 press 1 press UREF ZLALARM 2 dpress UREF ZLALARM Pressing the or key once more returns to the initial display Param
39. ter L and identified by one of the following displays L L H The measuring cable supplied with the instrument bears a white mark making it possible to determine the position of the phase on the mains socket The instrument also determines the frequency for any frequency gt 15 3Hz or DC 3 1 2 THE PROTECTIVE CONDUCTOR PE CHECK In a loop measurement ZLOOP or an earth measurement in a live condition REARTH when the TEST key is pressed the instrument first measures the potential difference Uc between the local earth user s potential via the TEST key and the PE terminal If Uc gt Ut where Ut is the limit contact voltage Ut 25 or 50 V see 3 2 SET UP the instrument indicates that it is impossible to make a measurement If a measurement is triggered the instrument then monitors voltage UNpE if it increases by more than 20 V the instrument stops the measurement and reports an error Pressing the TEST key again causes a return to voltage measurement mode AN In a loop measurement with 2 wires ZLINE position measurement of the potential between the earth and the PE conductor is omitted 3 1 3 MEASUREMENT CONDITIONS CHECK or a measurement to be authorized in addition to the above two checks determination of the position of the phase and of the voltage of the PE conductor the following conditions must be satisfied and UNPE lt 550 V voltage f lt 450Hz current 20Hz f 450Hz
40. tinuous operation on industrial sites 1 3 POWER SUPPLY Power supply 6 LR6 1 5V alkaline batteries they can be replaced by rechargeable sealed batteries having a capacity of at least 1 800 mAh Battery life 30 hours or approximately 10 000 loop measurements or under voltage earth measurements 1 000 earth measurements 2P 3P during 30 seconds 30 000 voltage or current measurements during 5 seconds 2 DESCRIPTION Preliminary remarks Several types of action are possible on each key of the keypad depending on whether the user presses the key briefly short press lt 2s validated by a beep or at length long press gt 2s validated by a beep having a tone different from that of the beep emitted for a short press In what follows these different actions are symbolized as follows gt gt for a short press on the key in question for a press gt 2s on the key in question 1 8 WAY ROTARY SWITCH OFF instrument off earth measurement with 2 auxiliary rods 2P AC or earth coupling resistance measurement REARTH Ox earth measurement in a live condition with one auxiliary rod selective earth if clamp connected 21 loop impedance measurement with 3 wires high low current between phase L and earth PE ZLINE loop impedance measurement with 2 wires high current only between two phases or between phase and neutral Desch current measurement SET UP configur
41. vailable on request 6 6 CUSTOMER SERVICE A For maintenance work use only specified spare parts A The manufacturer cannot be held liable for any accident that occurs following a repair done other than by its Customer Service Department or an approved repairer Repair under and out of warranty Send the instrument to one of the MANUMESURE regional agencies approved by Chauvin Arnoux Information and coordinates on request Tel 02 31 64 51 43 Fax 02 31 64 51 09 Repair outside mainland France For any repair under or out of warranty send the instrument back to the dealer 6 7 REPAIR For all repairs before or after expiry of warranty please return the device to your distributor 7 LIST OF CODED ERRORS Meaning code Er02 Incorrect wiring or connection error L and PE reversed Incorrect wiring or connection error L missing Ue voltage too high on earth electrode danger measurement STOPPED The calculation current measured by the probe by the measured voltage is too low The current measured by the probe is too unstable Earth potential too high potential danger measurement STOPPED Untimely interruption of the current during the measurement of Zin or 4 earth fault breaker tripped Probable cause reversal of conductors N and PE or the installation leakage current is too high Voltage too high on the voltage probe danger measurement STOPPED Current probe not connected Er 22 RH RE or parasit
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