AEMC instruments MN379T User Manual

AC Current Probe
Model MN379T
User Manual
DESCRIPTION
The MN379T (Cat. #2153.02) 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. The probe has a measurement range up to 120 A
and resolution capable of displaying 10 mV of output per amp of measured current, a voltmeter
accuracy of 0.5 % or better to take full advantage of the accuracy of the probe and an input
impedance of ≥ 1 M
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.
ƒ The safety warnings are provided to ensure the safety of personnel and proper operation of
the instrument. Read the instructions completely.
ƒ Use caution on any circuit: potentially high voltages and currents may be present and may
pose a shock hazard.
ƒ Do not use the probe if damaged. Always connect the current probe to the measuring
device before it is connected around the conductor.
ƒ Do not use on non-insulated conductor with a potential to ground greater than 600 V CAT III
pollution 2. Use extreme caution when clamping around bare conductors or bus bars.
ƒ Before each use, inspect the probe; look for cracks in housing or output cable insulation.
ƒ Do not use clamp in wet environment or in locations that hazardous gases exist.
ƒ Do not use the probe anywhere beyond the tactile barrier.
INTERNATIONAL ELECTRICAL SYMBOLS
Signifies that the instrument is protected by double or reinforced insulation.
CAUTION - Risk of Danger! Indicates a WARNING. Whenever this symbol is
present, the operator must refer to the user manual before operation.
Application or withdrawal authorized on conductors carrying dangerous voltages.
Type A current sensor as per IEC 61010-2-032.
DEFINITION OF MEASUREMENT CATEGORIES
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 fixed 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 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.
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