Aemc instruments MN103 User Manual

AC Current Probe
Model MN103

User Manual

DESCRIPTION

The MN103 (Catalog #1031.02) measures leakage current and low currents from 1 mA, and
measures current on 5A secondaries. This current probe provides AC current measuring capabilities
to instruments with mV inputs. The Model MN103 offers a 5 ft lead with safety 4mm banana plug.

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

This symbol signifies that the current probe is protected by double or reinforced insulation. Use
only factory specified replacement parts when servicing the instrument.

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.

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.

INSTRUMENT COMPATIBILITY

The Model MN103 is compatible with any AC voltmeter, multimeter, or other voltage measurement
instrument with an input impedance of 100k or greater. To achieve the stated accuracy, use the
MN103 with a voltmeter having an accuracy of 1% or better.

 =0.47" max.

(12 mm)

Black

1.26"

(32 mm)

ELECTRICAL SPECIFICATIONS

Current Range (low):
10A: 1mA to 10A AC

Output Signal:

1mV AC/mA AC (10V @ 10A)

Accuracy *:

Accuracy: 1mA to 10A AC
45 to 65Hz: ±3% reading ±1mA
>65 to 500Hz: -2, +6% reading ±1mA

4.53" (115 mm)

0.87"

(22 mm)

Current Range (high):

100A: 1 to 100A AC

Output Signal:

1mV AC/A AC
(100mV @ 100A)

Load Impedance:

100K min

Red

Accuracy *:

Accuracy: 1A to 100A AC
45 to 65Hz: ±2% reading ±0.1A
>65 to 500Hz: -2, +3% reading ±0.1A

*Reference conditions: 23°C ±3°K, 20 to
70% RH, external magnetic field < 40A/m,
no DC component, no external current
carrying conductor, test sample centered.
Load impedance 1M.

Frequency Range:

45 to 500Hz

Working Voltage:

250V AC

Common Mode Voltage:

250V AC

Calibration Check:

Recommended once a year

Output:

MN103: Double/reinforced insulated

5 ft (1.5m) lead with safety 4mm
banana plug

SAFETY SPECIFICATIONS

Electrical (IEC 414):

250V working voltage

250V max common mode between
output and ground

3kV 50/60 Hz dielectric for 1 mn

ORDERING INFORMATION

AC Current Probe

Model MN103 ................... Cat #1031.02

MECHANICAL SPECIFICATIONS

Operating Temperature:

14° to 122°F (-10° to 50°C)

Storage Temperature:

-40° to 176°F (-40° to 80°C)

Maximum Cable Diameter:

0.47” Ø max. (12mm)

Dimensions:

1.26 x 4.53 x 0.87"
(32 x 115 x 22mm)

Weight:

5.6 oz (160g)

Polycarbonate Material:

Handle: 10% Fiberglass charged
polycarbonate UL 94 V0

Accessories:

Banana plug adapter

(to non-recessed plug) ..... Cat #1017.45

OPERATION

Making Measurements with the AC Current Probe Model MN103

 Connect the black lead of the current probe to “common” and the red lead to the AC voltage range on your DMM

or other voltage measuring instrument. The “10A” range has an output signal of 1mV/mA AC. This means that
for 10A AC in a conductor around which the probe is clamped, 10V AC will come out of the probe leads to your
DMM or instrument. The “100A” range has an output signal of 1mV/A AC. This means that for 100A AC in a
conductor around which the probe is clamped, 100mV AC will come out of the probe leads to your DMM or
instrument. Select the range on your DMM or instrument which corresponds best to the measured current. If the
current magnitude is unknown, start with the highest range first and 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
the output signal used to obtain the measured current. (e.g. If the meter reads 100.5mV [range 1mV/mA], then
current equals 100.5mA AC). Unclamp the probe from the conductor before disconnecting it from your DMM or
instrument.

 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.
 To avoid electrical shock, do not attempt to perform any servicing unless you are qualified to do so.
 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.

(Or contact your authorized distributor)

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 contact our technical hotline:

LIMITED WARRANTY

The current probe is warranted 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.

Chauvin Arnoux®, Inc. d.b.a. AEMC® Instruments
15 Faraday Drive  Dover, NH 03820 USA

[phone] (Ext. 360) • [phone] (Ext. 360) • [e-mail]

[phone] • [phone] • [e-mail]

99-MAN 100019.v10 04/17