AEMC instruments MN375 Manuel utilisateur

AC Current Probe

Model MN375

User Manual

DESCRIPTION

The MN375 (Cat. #2115.41) is the latest in compact AC current probes. Designed to meet the most

stringent demands in industry and electrical contracting, it also meets the latest safety and performance

standards. This probe has a measurement range up to 10 Arms and is compatible with any AC voltmeter,

multimeter, or other voltage measurement instrument that has the following features: Range and

resolution capable of displaying 100 mV of output per amp of measured current; Voltmeter accuracy of



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.

• 



• 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.

• 

when clamping around bare conductors or bus bars.

INTERNATIONAL ELECTRICAL SYMBOLS

  

  

instrument.

Thi  

before using the instrument.

T 

 

DEFINITION OF MEASUREMENT CATEGORIES (CAT)

CAT IV corresponds to measurements performed at the primary electrical supply (< 1000 V).

Example: primary overcurrent protection devices, ripple control units, and meters.

CAT III corresponds to measurements performed in the building installation at the distribution level.

Example: hardwired equipment in xed installation and circuit breakers.

CAT II corresponds to measurements performed on circuits directly connected to the electrical

distribution system.

Example: measurements on household appliances and portable tools.

RECEIVING YOUR SHIPMENT

Upon receiving your shipment, make sure that the contents are consistent with the packing list. Notify



with the carrier and notify your distributor at once, giving a detailed description of any damage.

ELECTRICAL SPECIFICATIONS

Nominal Range: 10 A

Measurement Range: 0.1 to 10 A

Transformation Ratio: Voltage output

Output Signal: 100 mV/A (1 V at 10 A)

Accuracy and Phase Shift*:

Accuracy Shift:

0.1 to 1 A: 1 % Reading ± 2 mV

1 to 10 A: 1 % Reading ± 1.5 mV

Phase Shift::











-

rent carrying conductor, test sample centered.)



Frequency Range: (40 to 3) kHz

Limit Operating Conditions:

20 A permanently to 1 kHz

Crest Factor:



Working Voltage:



Common Mode Voltage:



Inuence of Adjacent Conductor:

< 15 mA/A at 50 Hz

Inuence of DC on AC signal:

DC Current < 20 A, < 5 %

Inuence of Conductor Position in Jaw:



Inuence of Frequency:

40 Hz to 1 kHz: 3 % of mV output

1 kHz to 3 kHz: 10 % of mV output

Inuence of Temperature:



Inuence of Humidity (10 - 90 % RH):



MECHANICAL SPECIFICATIONS

Operating Temperature:



Storage Temperature:



Operating Relative Humidity:



󰀨

Maximum Cable Diameter:



Cable Protection:



Drop Test:





Mechanical Shock:



Vibration:



Dimensions:



Weight:



Polycarbonate Material:



 



Opening Operations - Life:

> 50,000

Output:

Double/reinforced insulated 5 ft (1.5 m) lead with

safety 4 mm banana plug

SAFETY SPECIFICATIONS

Electrical:

Double insulation or reinforced insulation between

the primary or secondary and the outer case of the



Pollution Degree 2.

Common Mode Voltage:



Electromagnetic Compatibility:

Emission and immunity in an industrial environ-



ORDERING INFORMATION

AC Current Probe MN375.......Cat #2115.41

Accessories:

Banana plug adapter

(to nonrecessed plug) ............Cat #1017.45

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 MN375.

• 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

100mV/A. This means that for 10A AC in a conductor around which the probe is clamped, 1 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 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 10 to obtain the measured current



• 

Tips for Making Precise Measurements

• When using a current probe with a meter, it is important to select the range that provides the best



• 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

■

■To avoid electrical shock, do not attempt to perform any servicing unless you are



■To avoid electrical shock and/or damage to the instrument, do not allow water or other

foreign agents to come into contact with the probe.

Cleaning:

■To ensure optimum performance, it is important to keep the probe jaw mating surfaces





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.

 ®, Inc. d.b.a. AEMC®Instruments

 

 

(Or contact your authorized distributor)

NOTE: You must obtain a CSA# before returning any instrument.

TECHNICAL AND SALES ASSISTANCE



use or application of this instrument, please contact our technical hotline.



LIMITED WARRANTY

The instrument is warrantied to the owner for a period of two years from the date of

original purchase against defects in manufacture. This limited warranty is given by AEMC®

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

AEMC®Instruments.

Full warranty coverage and product registration is available on our website at:

www.aemc.com/warranty.html.

Please print the online Warranty Coverage Information for your records.



Ce manuel convient aux modèles suivants

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