AEMC MN02 Operating Manual

AC Current Probe
Model MN02

User Manual

DESCRIPTION

The MN02 (Cat. #2129.20) 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 MN02 is compatible with any AC ammeter, multimeter,
or other current measurement instrument with an input impedance lower than 10Ω. To achieve the
stated accuracy, use the probe with an ammeter 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 overvoltage
category III (CAT III). 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.

Voltage limiting circuit

DEFINITION OF MEASUREMENT CATEGORIES
CAT I: For measurements on circuits not directly connected to the AC supply wall outlet such as

protected secondaries, signal level, and limited energy circuits.

CAT II: For measurements performed on circuits directly connected to the electrical distribution system.

Examples are measurements on household appliances or portable tools.

CAT III: 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 (<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 be damaged, file a claim immediately
with the carrier and notify your distributor at once, giving a detailed description of any damage.

ELECTRICAL SPECIFICATIONS

Nominal Range: 100A
Measurement Range: 50mA to 100A (1Ω load)

50mA to 90A (10Ω load)
Transformation Ratio: 1000:1
Output Signal: 1mA/A from 1Ω to 10Ω
Accuracy and Phase Shift*:

Accuracy 1Ω load: ≤ 1% Reading ± 0.02A
Accuracy 10Ω load: ≤ 1.5% Reading ± 0.01A
Phase Shift: Not Specified

Reference conditions: 18°C to 28°C, 20 to 75% RH, external

*

magnetic field <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
1Ω or 10Ω.

Overload: 170A for 10 min ON, 30 min OFF

Frequency Range: 48 to 10,000Hz

Open Secondary Voltage: ≤ 30V
Working Voltage: 600Vrms
Common Mode Voltage: 600Vrms
Influence of Adjacent Conductor:

< 2mA/A at 50 Hz

Influence of Conductor Position in Jaw:

0.1% of mA output @ 50/60Hz