AEMC Instruments AEMC SR651 Current Transformer Manual
Contents
1. Electrostatic discharge IEC 1000 4 2 Radiated field IEC 1000 4 3 Fast transients IEC 1000 4 4 Magnetic field at 50 60Hz IEC 1000 4 8 ORDERING INFORMATION AC Current Probe SR651 AC Current Probe SR652 Cat 2113 45 Cat 2113 46 Accessories Leads set of 2 5 ft safety 1000V Cat 2111 29 Banana plug adapter to nonrecessed plug eee Cat 1017 45 sales GlobalTestSupply com OPERATION Please make sure that you have already read and fully understand the WARNING section on page 1 Making Measurements with the AC Current Probe Model SR651 SR652 e Connect the black lead of the current probe to Common and the red lead to the AC voltage input on your DMM or other voltage measuring instrument The AC current probe has a ratio of 1000 1 This means that for 1000A AC in a conductor around which the probe is clamped 1V AC will come out of the probe leads to your DMM or instrument The output is 1mV AC A AC Select the range which corresponds to the measured current If the current magnitude is unknown start with the highest range and work down until the appropriate range and resolution are reached Clamp the probe around the conductor Take the reading on the meter and multiply it by 1000 to obtain the measured current e g 260mV reading 260 x 1000 260 000mA or 260A e For best accuracy avoid if possible the proximity of other conductors which may create noise Tips for Making Precise Measurements e2. When using a current probe with a meter it is important to select the range that provides the best resolution Failure to do this may result in measurement errors e Make sure that probe jaw mating surfaces are free of dust and contamination Contaminants cause air gaps between the jaws increasing the phase shift between primary and secondary It is very critical for power measurement MAINTENANCE Warning e For maintenance use only original replacement parts e To avoid electrical shock do not attempt to perform any servicing unless you are qualified to do so e To avoid electrical shock and or damage to the instrument do not get water or other foreign agents into the probe Cleaning To ensure optimum performance it is important to keep the probe jaw mating surfaces clean at all times Failure to do so may result in error in readings To clean the probe jaws use very fine sand paper fine 600 to avoid scratching the jaw then gently clean with a soft oiled cloth REPAIR AND CALIBRATION You must contact our Service Center for a Customer Service Authorization number CSA This will ensure that when your instrument arrives it will be tracked and processed promptly Please write the CSA on the outside of the shipping container If the instrument is returned for calibration we need to know if you want a standard calibration or a calibration traceable to N I S T includes calibration certificate plus recorded calibration data Ch
3. AC Current Probe Models SR651 and SR652 User Manual DESCRIPTION The Models SR651 SR652 Catalog 2113 45 and 2113 46 are designed for use in industrial environments The ergonomic design allows them to easily attach to cables or small bus bars The circular jaws guarantee a very good accuracy and low phase shift The probes have a measurement range up to 1000Arms continuous and are compatible with any AC voltmeter multimeter or other voltage measurement instrument that has the following features Range and resolution capable of displaying 1mV of output per amp of measured current voltmeter accuracy of 0 75 or better WARNING The safety warnings are provided to ensure the safety of personnel and proper operation of the instrument Read the instruction completely Use caution on any circuit potentially high voltages and currents may be present and may pose a shock hazard Do not use the probe if damaged Always connect the current probe to the measuring device before it is connected around the conductor Do not use on non insulated conductor with a potential to ground greater than 600V CAT III pollution 2 Use extreme caution when clamping around bare conductors or bus bars Before each use inspect the probe look for cracks in housing or output cable insulation Do not use clamp in wet environment or in locations that hazardous gases exist Do not use the probe anywhere beyond the tactile barrier INTERNATIONAL ELECTR
4. ICAL SYMBOLS m This symbol signifies that the current probe is protected by double or reinforced insulation Use only factory specified replacement parts when servicing the instrument A This symbol signifies CAUTION and requests that the user refer to the user manual before using the instrument This is a type A current sensor This symbol signifies that application around and removal from HAZARDOUS LIVE conductors is permitted DEFINITION OF MEASUREMENT CATEGORIES CAT I For measurements on circuits not directly connected to the AC supply wall outlet such as protected secondaries signal level and limited energy circuits CAT Il For measurements performed on circuits directly connected to the electrical distribution system Examples are measurements on household appliances or portable tools CAT Ill For measurements performed in the building installation at the distribution level such as on hardwired equipment in fixed installation and circuit breakers CAT IV For measurements performed at the primary electrical supply lt 1000V such as on primary overcurrent protection devices ripple control units or meters RECEIVING YOUR SHIPMENT Upon receiving your shipment make sure that the contents are consistent with the packing list Notify your distributor of any missing items If the equipment appears to be damaged file a claim immediately with the carrier and notify your distributor at once giving a detailed description of any da
5. auvin Arnoux Inc d b a AEMC Instruments 15 Faraday Drive e 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 N I S T are available NOTE All customers must obtain a CSA before returning any instrument TECHNICAL AND SALES ASSISTANCE If you are experiencing any technical problems or require any assistance with the proper use or application of this instrument please call our technical hotline 800 343 1391 508 698 2115 Fax 508 698 2118 Chauvin Arnoux Inc d b a AEMC Instruments techsupport aemc com www aemc com Quality AEMC Products Online at www G lobalTestSupply com sales GlobalTestSupply com en 99 VAN 100135 v8 08 12
6. mage Quality AEMC Products Online at www G lobalTestSupply com sales GlobalTestSupply com IGJ AEWIL INSTRUMENTS 1 71 43 5 mm ai 3 90 99 mm SR651 4 37 111mm 3 98 101mm 1 22 31mm 2 25 57mm gt SR652 ww9 Z 0S 8 Tactical Barrier keep hands below this barrier Red 1 38 35 mm IIT 45 mm ELECTRICAL SPECIFICATIONS Current Range 0 1 to 1000A AC continuous cycle lt 1kHz Output Signal 1imV AC A AC 1V AC at 1000A Accuracy and Phase Shift Reference conditions 23 C 3 K 20 to 75 RH 48 to 65 Hz external magnetic field lt 40 A m no DC component no external current carrying conductor test sample centered Load impedance 1MQ Overload 1200A for 40 mn on 20 mn off Accuracy Per IEC 185 Primary current 0 110 10A 10A 50A Frequency Range 30 Hz to 5 kHz current derating above 1kHz using the formula 4000A x 1 Accuracy lt 3 0 1mV 3 1 5 aL Phase shift N A 3 15 F in kHz Load Impedance 100kQ min Primary current 200A 1000A 1200A Working Voltage 600V CAT III Accuracy 75 0 5 0 5 Phase shift 0 75 0 5 0 5 Common Mode Voltage 600V CAT III Quality AEMC Products Online at www GlobalTestSupply com sales GlobalTestSupply com Influence of Adjacent Conductor lt 1mA A AC I
7. nfluence of Conductor in Jaw Opening 0 1 of reading Influence of Frequency From 30 to 48Hz lt 1 of R From 65 to 1000Hz lt 0 5 of R From 1 kHz to 5kHz lt 1 of R MECHANICAL SPECIFICATIONS Operating Temperature 14 to 122 F 10 to 50 C Storage Temperature 4 to 158 F 20 to 70 C Influence of Temperature lt 0 1 per 10 Influence of Humidity From 10 to 90 0 1 Jaw Opening 2 25 57mm max Maximum Conductor Size 2 05 52mm Envelope Protection IP 40 IEC 529 Drop Test 1m IEC 68 2 32 Mechanical Shock 100g IEC 68 2 27 Vibration 5 to 15Hz 0 15mm IEC 68 2 6 15 to 25Hz 1mm 25 to 55Hz 0 25mm Polycarbonate Material Handles ABS Grey and Lexan 500R Red UL94V0 Jaws Lexan 500R Red UL94V0 Dimensions 4 37 x 8 50 x 1 77 111 x 216 x 45mm Weight 1 21lbs 550g Quality AEMC Products Online at www GlobalTestSupply com Output SR651 Two standard safety banana jacks 4mm SR652 5ft 1 5m lead with safety 4mm banana plug SAFETY SPECIFICATIONS cE OAO E192383 Electrical Double insulation or reinforced insulation between the primary or secondary and the outer case of the handle conforms to IEC 1010 2 032 Common Mode Voltage 600V Category Ill Pollution Degree 2 Dielectric Strength 5550V 50 60Hz between primary secondary and the outer case of the handle Electromagnetic Compatibility EN 50081 1 Class B EN 50082 2
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