AEMC MN170 AC Current Probe User Manual

AEMC MN170 AC Current Probe

DESCRIPTION

The MN170 (Catalog #100.270) is a mini current probe with 100:1 ratio for measurements to 75A AC.
Load impedance is limited to 0.14Ω.

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 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.

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.

PACKAGING

The AC Current Probe MN170 is shipped with this instruction manual and a product warranty and registration card. You can register online at www.aemc.com.

INSTRUMENT COMPATIBILITY

The Model MN170 is compatible with any ammeter, multimeter, or other current measuring instruments with an input impedance of 0.14 Ω or less. To achieve the stated accuracy, use the MN170 with a ammeter having an accuracy of 1% or better.

ELECTRICAL SPECIFICATIONS

Current Range:
2 to 75A AC
Transformation Ratio:
100:1
Output Signal:
10mA AC/A AC (750mA @ 75 A)
*Accuracy and Phase Shift:
±3% (with noninductive load ≤ 0.14 Ω)
Frequency Range:
45 to 1000 Hz
Load Impedance:
0.14 Ω max noninductive
Working Voltage:**
250V max

MECHANICAL SPECIFICATIONS

Operating Temperature:
14° to 122°F (-10° to 50°C)
Storage Temperature:
-40° to 167°F (-40° to 75°C)
Maximum Cable Diameter:
0.47” Ø max. (12 mm)

Dimensions:

1.26 x 4.53 x 0.87″
(32 x 115 x 22 mm)
Weight:
100 g (4 oz)
Colors:
Dark gray handles with red cover
Polycarbonate Material:
Handle: 10% Figerglass charged
polycarbonate UL 94 V0
Output:
Standard 4mm banana jacks
Dielectric Test:
3000V RMS

ORDERING INFORMATION

AC Current Probe
MN170……………………… Cat #100.270
Accessories:
Pair, current leads
(39” color-coded)…………. Cat #100.361
Pair, safety current leads
(5 ft retractable, 250V)….. Cat #100.319

OPERATION

Making Measurements with the AC Current Probe Model MN170

• Connect the current probe MN170 to the AC current range on your DMM or other current measuring instrument. The AC Current Probe MN170 has a ratio of 100:1. This means that for 75A AC in a conductor around which the probe is clamped, 750mA AC will come out of the probe leads to your DMM or instrument. The output is 10mA AC/A AC. 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 100 to obtain the measured current (e.g., 60mA reading = 60 x 100 = 6,000mA or 6A).
• 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 a 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 • 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

99-MAN 100025.v3 07/04

References

• Get Electrical Testers – Power Analyzers | AEMC Instruments
• Manual-Hub.com – Free PDF manuals!

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