2610 Manual.indd - Chauvin Arnoux Group
Contents
1. Figure 3 Figure 4 One way to circumvent this shielded cable problem is shown in Figures 5 and 6 Here the shield is looped through the detector twice so that the reading will be that of the fault current Figure 5 Figure 6 Ground Fault Leakage Detector Model 2610 11 4 3 2 Grounded Neutral It is easy to take measurements on this type of network where major faults trip the circuit breaker Here the detector can sense minor faults so repairs can be made before the problem gets worse The inspection method is the same as for a single phase installation Remember that on a three phase network the currents add according to the vector sum law The Model 2610 measures the vector sum of the enclosed currents If you have for example 400mA fault and 250mA fault the same phase the Model 2610 will detect 650mA But if the two faults are on different phases they add vectorially and may even sum up to zero Figure 7 shows an example in which there are two separate faults 400mA on a machine in one shop 250mA on a machine in another shop The vector sum is not 650mA but 350mA If you switch off the machine with the 250mA fault the reading increases indicating faults on different phases 4 3 3 Neutral Grounded Through an Impedance Follow the procedure the same way as for a grounded neutral installation but with care When the neutral is grounded through an impedance a faul2. 2610 m GROUND FAULT LEAKAGE DETECTOR ENGLISH User Manual EJAEMC TABLE OF CONTENTS 1 INTRODUCTIONN 2 1 1 Receiving Your Shipiment LLL 3 1 2 Packaging reiner ma 3 1 3 Ordering mm 3 1 3 1 Accessories and Replacement 3 2 PRODUCT FEATURES 4 2 1 202 2 0 000000 4 2 2 5 3 SPECIFICATIONS 6 3 1 SPSCIHICALIONS 2 ARE 6 3 1 1 EleCtriGal 6 3 1 2 MECHANICAL aee te n eere enne eene 74 3 13 7 4 OPERATION 8 4 1 Principle of 8 4 1 1 Measuring Current 8 4 1 2 Interpreting the Measurement 8 4 2 Equipment Troubleshooting 10 4 3 Testing Various Cable Configurations 11 4 3 1 Metal 11 4 3 2 Grounded Neutral 12 4
3. 25 C 77 F or less Output Signal 1mV A 400mV max Accuracy 0 5A to 10A 0 596 of Reading 0 5mA 10A to 200A 0 5 of Reading 0 5mA 200A to 400A 0 5 of Reading 1mA Load Impedance 1 min Reference Conditions Ambient temperature 23 C 3 C current frequency 48 to 65Hz impedance of measuring instrument gt 10MQ 100pF absence of DC current in the conductor conductor centered within the jaws 6 Ground Fault Leakage Detector Model 2610 3 1 2 MECHANICAL Frequency Range 10 to 1000Hz 100A max at 1000Hz 30Hz to 1kHz frequency limited to 100A to 1kHz Housing Protection Range 20 IEC 529 Shock Resistance 100G IEC 68 2 27 Vibration Resistance 10 55 10Hz 0 15mm IEC 68 2 6 Self Extinguishing Ability Handle UL94 Jaws UL94 V2 Jaw Opening 3 9 100mm Inside Jaw Diameter 3 9 100mm Dimensions 12 25 x 5 9 x 1 63 31 1 x 15 x 4 1 Weight 4 4 Ibs 2kg 3 1 3 SAFETY Dielectric Strength Test 2 Maximum Working Voltage 600VAC 3 94 max Y 100 mm 1 I 12 28 312 5 94 151 Ground Fault Leakage Detector Model 2610 CHAPTER 4 4 1 Principle of Operation 4 1 1 Measuring Current Leakage When a generator supplies an AC load through a pair of wires in an insulated cable the current going out on one wire is equal to the current returning their vector sum equals zero A grou
4. 3 3 Neutral Grounded Through an Impedance 13 4 4 Commonly Asked Questions a 13 5 MAINTENANGCE 14 5 T Cleaning aereo e ende iO ree 14 Repair and ct ttu es net tine qve pea E 15 Technical and Sales Assistance 15 Limited Warranty 2 iater aaa ba n ge o 16 Warranty Rope uy endo eM A ee A ene 16 CHAPTER INTRODUCTION AN Warning A These safety warnings are provided to ensure the safety of person nel and proper operation of the instrument Never use this clamp on conductors with a voltage potential above 600Vrms Never clamp around a conductor unless the clamp is terminated to a measuring instrument of the proper input impedance Keep the jaw contacts clean If necessary use a slightly oiled cloth to remove oxidation Ensure that the cable or bus bar is properly centered within the clamp jaws Keep away from other conductors which may create interference Avoid leaving the clamp in damp places or exposing it to running water Due to shock or fire hazards electrical connections of the instru ment should be performed only by qualified personnel and in accordance with local state and federal electrical requirements International Electrical Symbols E This symbol signifies that the instrument is protected by double or r
5. Inc d b a Instruments 15 Faraday Drive Dover NH 03820 USA Phone 603 749 6434 Fax 603 742 2346
6. by insulation faults It enables the operator to locate failures when or before they occur without shutting down equipment or spending hours trouble shooting It is designed specifically for locating low current faults on high current loads The detector is a sensitive nickel alloy AC current transformer capable of measuring differential or leakage current from 500pA and be used to measure current up to 200A continuous duty 400A max The Model 2610 provides on two ranges 1 or 1 The output leads are terminated with standard 4mm banana plugs capable of interfacing with any standard multimeter Use of a digital multimeter with analog bar graph is recommended Digital to provide the proper voltage input impedance and an analog bar graph to track trends When the 2610 is used as a current leakage detector it makes no difference if the system is single phase or poly phase or if the currents are in phase or out of phase balanced or unbalanced The net magnetic field at any instant in time will be zero if all the conductors surrounded by the current leakage detector are supplying all the current delivered to and received from the load If any current is diverted through any alternate path such as an insulation breakdown to ground the net loss will be detected producing a output proportional to the amplitude of the fault current The Model 2610 may also be used simply as a highly accurate clamp on curren
7. einforced insulation Use only specified replacement parts when servicing the instrument A This symbol on the instrument indicates a WARNING and that the operator must refer to the user manual for instructions before oper ating the instrument In this manual the symbol preceding instruc tions indicates that if the instructions are not followed bodily injury installation sample and product damage may result A Risk of electric shock The voltage at the parts marked with this symbol may be dangerous 2 Ground Fault Leakage Detector Model 2610 1 1 Receiving Your Shipment Upon receiving your shipment make sure that the contents are consis tent with the packing list Notify your distributor of any missing items If the equipment appears to be damaged file a claim immediately with the carrier and notify your distributor at once giving a detailed description of any damage Save the damaged packing container to substantiate your claim 1 2 Packaging The Ground Fault Leakage Detector Model 2610 is shipped with a user manual 1 3 Ordering Information Ground Fault Leakage Detector Model 2610 Cat 1201 42 1 3 1 Accessories and Replacement Parts 4mm Safety Plug Plug Adapter converts male safety plugs to non shielded male plugs Cat 1017 45 Ground Fault Leakage Detector Model 2610 3 CHAPTER 2 PRODUCT FEATURES 2 1 Description The Model 2610 measures leakage current shunted to ground caused
8. nd fault changes this equality and the leakage current detector picks it up measures it and provides an AC voltage output proportional to the severity of fault causing the unbalance The ground conductor must not pass through the detector 4 1 2 Interpreting the Measurement Figure 1 is a schematic of a single phase installation of a motor and an oven both grounded The numbers indicate the amplitudes of the currents in different conductors This installation has no faults If you clamp the detector around the cables at points A B C or D it will output zero Figure 1 8 Ground Fault Leakage Detector Model 2610 In Figure 2 there is a fault in the installation At point A the Model 2610 detects 1A the difference between 16 and 15A indicating a fault down stream At point C it detects zero therefore the fault is not in the oven At points B and D the detector picks up 1A showing that the fault is the motor If it gets worse the leakage current will increase and the cir cuit breaker will trip This motor should be disconnected immediately and repaired GND RESIDUAL CURRENT 1A GND Figure 2 In a three phase installation the principle is the same But here it is neces sary to pass all active conductors through the detector including the neu tral if one is used If this is done properly the detector output will be zero if there is no current leaking to ground If it detects something other than zero there i
9. on branch circuits being supplied by the feeder But clamping onto the incoming feeder resulted in an indication of 350mA Can you explain why 400mA 250mA 350mA A The detector measures residual current in other words the vectorial sum of the currents If you have a 400mA fault and a 250mA fault on the same phase you have every chance of finding 650mA But if you have two faults on different phases they add as vectors In a very favorable theoretical case we could even find zero Q The Model 2610 detects faults caused by insulation failures How does detecting faults with the detector differ from information result ing from megohmmeter insulation tests A The Model 2610 will detect electrical faults while the equipment is still in operation This offers two distinct advantages First it is not necessary to shut the equipment down eliminating costly down time and second you may detect faults that would not be evident under static conditions Q Would it be possible to clamp the Model 2610 directly around the grounding detector A Yes in some instances it may be possible to detect fault current on a specific motor if there is a dedicated grounding path However if several devices are sharing a common ground it should be noted that the fault may be occurring on any one of the devices Ground Fault Leakage Detector Model 2610 13 CHAPTER 5 MAINTENANCE WARNING For maintenance use only specified replacement part
10. ough metal conduits and there are many cases where a shielded cable was installed during revamping of an area or addition to a building If a cable is clamped to walls detach it and pull it away from the surface at several points so the clamp can sur round all the conductors 4 3 1 Metal Conduits Cables enclosed in metal conduits which are grounded are not a problem Simply apply the clamp around the conduit the metal tube will not block the measurement Cables with a metal shield can be handled in the same way as cable in metal conduit A grounded shield may present a problem If it is a simple metal shield like a thin metal wrapping it can be considered in the same way as the metal conduit If the armor is grounded by a conductor it may be an inconve nience depending on the terminal connections as well as on the number and type of ground connections along the cable 10 Ground Fault Leakage Detector Model 2610 In Figure 3 the detector senses the fault because the shield is not con nected to the motor frame and the leakage current cannot flow back through the detector In Figure 4 however the instrument cannot see the fault because the shield is connected to the motor frame letting the fault current return through the detector and causing it to read zero If possible take your measurement where you can avoid closing the shield in the clamp such as the nearest control panel or inside the connecting box of the motor
11. s To avoid electrical shock do not attempt to perform any servic ing unless you are qualified to do so To avoid electrical shock and or damage to the instrument do not get water or other foreign agents into the case Turn the instrument OFF disconnect the unit from all the circuits before opening the case 5 1 Cleaning e Wipe the case and jaw covers with lightly moistened cloth and mild detergent Donotuse any abrasives solvents f rusted the jaw mating surfaces of the Model 2610 may be lightly sanded with very fine sandpaper and then very lightly oiled Wipe off excess oil and do not let it drip into the case 14 Ground Fault Leakage Detector Model 2610 Repair and Calibration To ensure that your instrument meets factory specifications we recommend that it be submitted to our factory Service Center at one year intervals for reca libration or as required by other standards or internal procedures For instrument repair and calibration You must contact our Service Center for a Customer Service Authorization Number CSA This will ensure that when your instrument arrives it will be tracked and processed promptly Please write the CSA on the outside of the shipping container If the instrument is returned for calibration we need to know if you want a standard calibration a calibration traceable to N I S T Includes calibration certificate plus recorded calibration data Chau
12. s a ground fault that should be repaired 4 22 Equipment Troubleshooting To locate a fault quickly begin your troubleshooting at the incoming low voltage distribution header Successively check each feeder If the Model 2610 detects a ground fault follow the feeder downstream branch by branch to the equipment with the problem Ground Fault Leakage Detector Model 2610 9 It is useful to take measurements periodically to create a history the quality of the insulation This is good preventive maintenance which could prove valuable later If you detect a fault current that is very low initially but increases from day to day this means that electrical failure is immi nent and should be taken care of during the next planned maintenance shutdown For best results center the conductors within the clamp jaws Check that the edges of the jaws are perfectly clean and that they close tightly Try to avoid placing the conductors near the gaps and group them as much as possible If you are careless you can affect the magnitude of the reading depend ing on the current being carried in the conductors In certain cases this requires an interpretation Normally however the absolute value of the ground current is not important All you need to know is whether the read ing is zero 4 33 Testing Various Cable Configurations Older installations have a wide variety of electrical distribution systems Cables are clamped to walls and pass thr
13. t even a serious one may not trip the circuit breaker and the shop will keep operating 4 4 Commonly Asked Questions Q have found an indication of 40 to 50mA on one of the main feed ers with 300A on the line Is this value a fault A With 300A on the line it is possible to find an undesired current of that magnitude Different cables in the installation may not have equivalent capacitance and resistance These cables provide for high current and of course we apply a high current Therefore we may have a capacitive influence which corresponds to 45mA Q Must the conductors be centered within the jaws A You should avoid placing the conductors close against the magnetic circuit near the gaps and should group the conductors as much as pos sible You must also ensure that the jaw ends are perfectly clean and that nothing prevents them from closing tightly 12 Ground Fault Leakage Detector Model 2610 Q Is it possible when checking cables which run parallel yet supply the same load to clamp the detector over each cable separately A When there are parallel cables the measurement is valid only if the detector covers the cables together In fact if you take each one sepa rately it is highly probable that the distribution of current in the parallel cables is not even These differences can be caused by the fact that the cables may not have exactly the same resistance Q have detected faults of 400 250mA
14. t probe With its 4 jaw opening and range of 500p Ato 200A the 2610 provides a versatile way to analyze unbalanced current measurements leakage values on grounding conductors and ground loop currents 4 Ground Fault Leakage Detector Model 2610 2 2 Compatibility The Model 2610 is compatible with any DMM voltmeter or other voltage measuring instrument with the following features Range and resolution capable of displaying 1mVAc of input Voltmeter accuracy uncertainty of 0 75 or better to take full advantage of the accuracy of the probe Minimum input impedance of 1 on the 4A range or 1kO on the 200A range Connect the probe to the multimeter or other instrument Select the appropriate AC voltage range on your multimeter The Model 2610 has two selectable output ranges The 4A range will produce a mV mA with an output of 4VAc at 4A The 200A range produces 1mV A with 200mV at 200A A Warning User Safety Always use a DMM voltmeter or other displaying device appropriately rated for safety Ground Fault Leakage Detector Model 2610 5 CHAPTER 9 SPECIFICATIONS 3 4 Specifications 3 1 1 ELECTRICAL 4A Range Current Range 500A to 4AAC Output Signal 1mV mA 4V max Accuracy 500pA to 10mA 3 of Reading 1mA 10mA to 4A 0 5 of Reading 0 5mA Load Impedance 1MQ min 200A Range Current Range 500mA to 200 Between 200A and 400A the max measurement time is 5 minutes with 20 minutes rest
15. vin Arnoux Inc d b a AEMC Instruments 15 Faraday Drive Dover NH 03820 USA Tel 800 945 2362 Ext 360 603 749 6434 Ext 360 Fax 603 742 2346 or 603 749 6309 repair aemc com Or contact your authorized distributor Costs for repair standard calibration and calibration traceable to 1 6 are available NOTE All customers must obtain a CSA before returning any instrument Technical and Sales Assistance same If you are experiencing any technical problems or require any assistance with the proper operation or application of your instrument please call mail fax or e mail our technical support hotline Chauvin Arnoux Inc d b a AEMC Instruments 200 Foxborough Boulevard Foxborough MA 02035 USA Phone 800 343 1391 508 698 2115 Fax 508 698 2118 techsupport aemc com www aemc com NOTE Do not ship Instruments to our Foxborough MA address Ground Fault Leakage Detector Model 2610 15 Limited Warranty Ww i The Model 2610 is warranted to the owner for period year from the date of original purchase against defects in manufacture This limited warranty is given by Instruments not by the distributor from whom it was purchased This warranty is void if the unit has been tampered with abused or if the defect is related to service not performed by Instruments For full and detailed warranty coverage please read the Warrant
16. y Cov erage Information which is attached to the Warranty Registration Card if enclosed or is available at www aemc com Please keep the War ranty Coverage Information with your records What Instruments will do If a malfunction occurs within the one year period may return the instrument to us for repair provided we have your warranty registration information on file or a proof of purchase AEMC Instruments will at its option repair or replace the faulty material REGISTER ONLINE AT www aemc com Warranty Repairs EEE What you must do to return an Instrument for Warranty Repair First request a Customer Service Authorization Number CSA by phone or by fax from our Service Department see address below then return the instrument along with the signed CSA Form Please write the CSA on the outside of the shipping container Return the instrument postage or shipment pre paid to Chauvin Arnoux Inc d b a AEMC Instruments Service Department 15 Faraday Drive Dover NH 03820 USA Tel 800 945 2362 Ext 360 603 749 6434 Ext 360 Fax 603 742 2346 or 603 749 6309 repair aemc com Caution To protect yourself against in transit loss we recommend you insure your returned material NOTE All customers must obtain a CSA before returning any instrument 16 Ground Fault Leakage Detector Model 2610 EJAEMC INSTRUMENTS 12 03 99 MAN 100088 v3 Chauvin
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