AEMC Instruments AEMC MN185 Current Transformer Manual
Contents
1. This means that for 100A AC in the conductor around which the probe is clamped 100mA AC will come out of the probe leads to your DMM or instrument The output is 1mA AC per Amp Select the range on your DMM or instrument which best corresponds to the measured current If the magnitude is unknown start with the highest range 200mA AC then work down until the appropriate range and resolution is 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 59mA reading 59 x 1000 59 000mA or 59A e For best accuracy avoid if possible the proximity of other conductors which may create noise Tips for Making Precise Measurements e 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 factory 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 i2. lt 40A m no DC component no external current carrying conductor test sample centered Load impedance 19 Overload 170A continuously Frequency Range 30Hz to 10kHz Load Impedance 5Q max Working Voltage 250V AC Common Mode Voltage 30V AC MECHANICAL SPECIFICATIONS Operating Temperature 13 to 122 F 25 to 50 C Storage Temperature 40 to 176 F 40 to 80 C Temperature Influence lt 0 2 per 10 K Maximum Conductor Size 0 47 max 12mm Dimensions 1 26 x 4 53 x 0 87 32 x 115 x 22mm Weight 5 6 oz 160g Colors Dark gray handles with red cover Polycarbonate Material Handle 10 Fiberglass charged polycarbonate UL 94 VO www GlobalTestSupply com Output Two standard safety banana jacks 4mm SAFETY SPECIFICATIONS Electrical 3kV 50 60 Hz dielectric 30V max common mode between output and ground ORDERING INFORMATION AC Current Probe MN185 Cat 100 185 Includes a user manual and a product warranty and registration card Accessories Pair current leads 39 color coded eeee Cat 100 361 Pair safety current leads 5 ft retractable rated 250V Cat 100 319 Banana plug adapter to non recessed plug Cat 1017 45 sales GlobalTestSupply com OPERATION Making Measurements with the AC Current Probe Model MN185 e Connect the terminals to the 200mA range of your DMM or instrument The MN185 has a ratio of 1000 1
3. AC Current Probe Model MN185 User Manual DESCRIPTION The MN185 Catalog 100 185 is a high accuracy current probe for tight areas such as crowded wiring Extends DMM AC measurements to 120A AC WARNING These safety warnings are provided to ensure the safety of personnel and proper operation of the instrument Read the instruction manual completely and follow all the safety information before attempting to use or service this instrument Use caution on any circuit Potentially high voltages and currents may be present and may pose a shock hazard Read the safety specifications section prior to using the current probe Never exceed the maximum voltage ratings given Safety is the responsibility of the operator ALWAYS connect the current probe to the display device before clamping the probe onto the sample being tested ALWAYS inspect the instrument probe probe cable and output terminals prior to use Replace any defective parts immediately NEVER use the current probe on electrical conductors rated above 250V Use extreme caution when clamping around bare conductors or bus bars INTERNATIONAL ELECTRICAL SYMBOLS 0 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
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5. mportant 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 Chauvin 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
6. sensor This symbol signifies that application around and removal from HAZARDOUS LIVE conductors is permitted RECEIVING YOUR SHIPMENT Upon receiving your shipment make sure that the contents are consistent with the packing list Notify your distributor of any missing items If the equipment appears to be damaged file a claim immediately with the carrier and notify your distributor at once giving a detailed description of any damage PACKAGING The AC Current Probe MN186 is shipped with this instruction manual and a product warranty and registration card INSTRUMENT COMPATIBILITY The Model MN185 is compatible with any ammeter multimeter or other current measuring instruments with an input impedance of less than 59 To achieve the stated accuracy use the MN185 with an ammeter having an accuracy of 0 75 or better Quality AEMC Products Onlineat www GlobalTestSupply com sales GlobalTestSupply com G AENIUL INSTRUMENTS 0 47 max 12 mm ELECTRICAL SPECIFICATIONS Accuracy and Phase Shift Current Range Accuracy 50mA to 120A AC continuous 50mA to 100A 1 0 01A f with non inductive load Output Signal 100A to 120A 1 5 0 01A 1MA AC A AC 120mA 120A Quality AEMC Products Online at www GlobalTestSupply com sales GlobalTestSupply com Quality AEMC Products Online at Phase Shift lt 3 5 from 1 to 100A 50 to 60Hz Reference conditions 23 C 3 K 20 to 85 RH external magnetic field
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