AEMC Instruments AEMC MN03 Current Transformer Manual
Contents
1. 10 to 50 C Storage Temperature 40 to 176 F 40 to 80 C Maximum Cable Diameter One 0 39 10mm Case Protection IP 40 IEC 529 Drop Test Test per IEC 68 2 32 1 0m drop on 38mm of Oak on concrete Mechanical Shock Test per IEC 68 2 27 Vibration Test per IEC 68 2 6 Dimensions 4 43 x 1 48 x 1 02 112 5 x 37 5 x 26mm Weight 180 g 6 5 oz Polycarbonate Material Jaws Red Polycarbonate Case Dark Polycarbonate Opening Operations Life gt 50 000 Output Double reinforced insulated 5 ft 1 5m lead with safety 4mm banana plug Altitude lt 2000 m Indoor use only Quality AEMC Products Online at www GlobalTestSupply com SAFETY SPECIFICATIONS Cc ol Electrical Conforms to IEC 1010 2 32 ed 2 2003 Common Mode Voltage 300V Cat IV 600V Cat III Pollution Degree 2 Electromagnetic Compatibility EN61326 1 ed 97 A1 ed 98 transmission and immunity in an industrial site ORDERING INFORMATION AC Current Probe MNO3 Cat 2129 18 Includes a user manual and a product warranty and registration card Accessories Banana plug adapter to non recessed plug 0 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 MNO3 Connect the black lead of the current probe to common a2. rn 09 MAN 100333 v1 01 09
3. AC Current Probe Model MNO3 User Manual DESCRIPTION The MNO3 Cat 2129 18 is small compact AC current probe Designed to meet the most stringent demands in industry and electrical contracting they also meet the latest safety and performance standards The probe has a measurement range up to 100Arms which makes it a perfect tool for measurement with DMMs recorders The Model MNO3 is compatible with any voltmeter multimeter or other current measurement instrument with an input impedance greater than 1MQ To achieve the stated accuracy use the probe with a voltmeter having an accuracy of 0 75 or better 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 600V in ov
4. be damaged file a claim immediately with the carrier and notify your distributor at once giving a detailed description of any damage Quality AEMC Products Online at www G lobalTestSupply com sales GlobalTestSupply com J AEMG INSTRUMENTS 1 02 26mm wiwis Z LL Ert Ef ELECTRICAL SPECIFICATIONS Nominal Range 100A Measurement Range 1 to 100AAC Output Signal 1mVAC AAC 100mV 100A Accuracy and Phase Shift Accuracy 2 Reading 50mA Phase Shift Not Specified Reference conditions 18 to 28 C 20 to 75 RH external magnetic field lt 40 A m 48 to 65 Hz sine wave distortion factor less than 1 no DC component no external current carrying conductor test sample centered Load impedance 1MQ 1 48 37 5mm Overload 150A permanent Frequency Range 48 to 500Hz Working Voltage 600Vrms Common Mode Voltage 600Vrms Influence of Adjacent Conductor lt 2mA A at 50Hz Influence of Conductor Position in Jaw 0 1 of mV output 50 60Hz Quality AEMC Products Online at www G lobalTestSupply com sales GlobalTestSupply com Influence of Frequency lt 1 of mA output from 65 to 500Hz Influence of Temperature lt 0 2 10 K Influence of Humidity 10 to 90 RH lt 0 1 of mA MECHANICAL SPECIFICATIONS Operating Temperature 14 to 122 F
5. ervoltage category Ill CAT III Use extreme caution when clamping around bare conductors or bus bars INTERNATIONAL ELECTRICAL 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 l 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
6. nd the red lead to the AC voltage input on your DMM or other current measuring instrument Select the appropriate current range 400mVAC range Clamp the probe around the conductor to be tested Select the lower range until you obtain the best resolution Read the value display on the DMM and multiply it by the probe ratio 1000 1 If reading 59mV the current flowing through the probe is 59 x 1000 59A For best accuracy avoid if possible the proximity of other conductors which may create noise Tips for Making Precise Measurements 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 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 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 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 fi
7. ne 600 to avoid scratching the jaw then gently clean with a soft oiled cloth REPAIR AND CALIBRATION A calibration check is recommended once a year No adjustment is possible 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 com Quality AEMC Products Online at www G lobalTestSupply com sales GlobalTestSupply com
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