AEMC Instruments AEMC MN255 Current
Contents
1. which the probe is clamped 2 V AC will come out of the probe leads to your DMM or instrument Select the range which corresponds to the measured current If the current magnitude is unknown start with the probe in the 10 mV A position and if the current is lt 20 amps the probe can be switched to the 100 mV A position for the higher resolution Clamp the probe around the conductor With the probe in the 10 mV A position take the reading on the meter and multiply it by 100 to obtain the measured current e g 160 mV reading 160 x 100 16 000 mA or 16 A 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 important to keep2. your distributor of any missing items If the equipment appears to be damaged file a claim immediately Py ey eran eco N EPEE O ieee SEG week ae ide PE T PEN EE P I PE E ae Shop for AEMC products online at WWW DataLoggerStore ca 1 877 766 5412 AEMG INSTRUMENTS 2 56 65 mm i 73 83 21 mm 18 5 mm a CIN ww 6 4 20 S 2 00 51 mm ELECTRICAL SPECIFICATIONS 200 A Range Nominal Range 20A 200A Accuracy 0 5 to 10 A 3 0 Reading 5 mV 10 to 40 A 2 5 Reading 5 mV 40 to 100 A 2 0 Reading 5 mV 100 to 240 A 1 0 Reading 5 mV Measurement Range 20 A 0 1 to 24 A 200A 0 1 to 240 A Transformation Ratio Voltage output Phase Shift 0 5 to 10 A Not Specified Output Signal 20 A 100 mV A 10 to 40 A lt 5 200 A 10 mV A 40 to 100 A lt 3 Accuracy and Phase Shift 100 to 240 A s 2 5 20 A Range Reference conditions 18 C to 28 C 20 to 75 RH Accuracy 1 50 mV external magnetic field lt 40 A m 48 to 65Hz sine wave Phase Shift Not snecified distortion factor less than 1 n6 DE component no Shop for AEMC products online at www DataLoggerStore ca 1 877 766 5412 Frequency Range 40 to 10 kHz Limit Operating Conditions 200 A permanently to 1 kHz Derating above 3kHz 200 A x 1 0 333 F F in kHz Crest Factor 3 200 Arms with an error due to C
3. 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 WAN AAMC CAM Shop for
4. AC Current Probe Model MN254 and MN255 User Manual DESCRIPTION The MN254 MN255 Cat 2115 80 2115 81 are the latest in compact AC Current probes Designed to meet the most stringent demands in industry and electrical contracting they also meet the latest safety and performance standards The probes have a measurement range up to 240 Arms which makes them perfect tools for measurement with DMMs recorders power and harmonic meters They are compatible with any AC voltmeter multimeter or other voltage measurement instrument that is capable of displaying 10mV of output per amp of measured current voltmeter accuracy of 0 75 or better and an input impedance of 2 1 MQ 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 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 t
5. AEMC products online at www Data LoggerSto re ca 1 877 766 5412 ee 09 AN 100141 v5 04 07
6. F of 3 Working Voltage 600 Vrms Common Mode Voltage 600 Vrms Influence of Adjacent Conductor lt 15 mA A at 50 Hz Influence of DC on AC signal 20 A Range DC Current lt 2 A lt 0 5 200 A Range DC Current lt 20 A lt 5 Influence of Conductor Position in Jaw 0 5 of mV output 50 60 Hz Influence of Frequency 20 A Range 40 Hz to 1 kHz 5 of mV output 1 kHz to 10 kHz 15 of mV output 200 A Range 40 Hz to 1 kHz 3 of mV output 1 kHz to 10 kHz 12 of mV output Influence of Temperature lt 150 ppm K or 0 15 of mV output per 10 K Influence of Humidity 10 90 RH lt 0 2 of mV output per 10 K 18 C to 28 C MECHANICAL SPECIFICATIONS Operating Temperature 14 to 131 F 10 to 55 C Storage Temperature 40 to 158 F 40 to 70 C Operating Relative Humidity 10 35 C 85 RH without roll off above 35 C Maximum Cable Diameter One 0 78 20 mm bus bar 20 x 5 mm Case Protection IP 40 IEC 529 Drop Test Test per IEC 68 2 32 1 0 m drop on 38 mm of Oak on concrete Vibration Test per IEC 68 2 6 Dimensions 5 47 x 2 00 x 1 18 139 x 51 x 30 mm Weight 180 g 6 5 oz Polycarbonate Material Jaws Polycarbonate with 10 fiberglass charge Red UL 94 VO Case Polycarbonate 920A Gray Opening Operations Life gt 50 000 Output MN254 Two standard safety banana jacks 4mm MN255 Double reinforced insulated 5 ft 1 5m lead wi
7. he current probe on electrical conductors rated above 600V in overvoltage category III CAT III 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 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
8. th safety 4mm banana plug SAFETY SPECIFICATIONS ce ol us LISTED Electrical E192383 Double insulation or reinforced insulation between the primary or secondary and the outer case of the handle conforms to IEC 1010 2 32 Common Mode Voltage 600V Category III 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 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 MN254 Cat 2115 80 AC Current Probe MN255 Cat 2115 81 Both models include a user manual and a product warranty and registration card Accessories Leads set of 2 5 ft safety 1000V for Model MN254 2 0 Cat 2111 29 Banana plug adapter Shop for AEMC products online at www Data LoggerSto re ca 1 877 766 5412 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 MN254 and MN255 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 an output of 10 mV A and 100 mV A This means that with the probe in the 10 mV A position for 200 A AC in a conductor around
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