AEMC JM830A User Manual

AC Current Probe
Model JM830A
User Manual
DESCRIPTION
The Model JM830A (Cat. #2110.83) is designed for use in industrial environments. The
squared jaws permit multiple conductor or bus bar positioning. The current output makes it
the perfect tool for measurement with DMMs, recorders, power and harmonic meters. The
Model JM830A is compatible with any AC ammeter, multimeter, or other current measuring
instruments with an input impedance lower than 5 Ω. To achieve the stated accuracy, use
the JM830A with a DMM having an accuracy of 0.75 %.
WARNING
These safety warnings are provided to ensure the safety of personnel and proper
operation of the instrument.
ƒ Read the instruction manual completely and follow all the safety information before
attempting to use or service this instrument.
ƒ Use caution on any circuit: Potentially high voltages and currents may be present and
may pose a shock hazard.
ƒ Read the Safety Specifications section prior to using the current probe. Never exceed
the maximum voltage ratings given.
ƒ Safety is the responsibility of the operator.
ƒ ALWAYS connect the current probe to the display device before clamping the probe
onto the sample being tested.
ƒ ALWAYS inspect the instrument, probe, probe cable, and output terminals prior to use.
Replace any defective parts immediately.
ƒ NEVER use the current probe on electrical conductors rated above 600 V in overvoltage
CAT III. Use extreme caution when clamping around bare conductors or bus bars.
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)
For measurements performed at the primary electrical supply (< 1000 V),
CAT IV:
such as primary overcurrent protection devices, ripple control units, or meters.
For measurements performed in the building installation at the distribution
CAT III:
level, such as hardwired equipment in fixed installation or circuit breakers.
For measurements performed on circuits directly connected to the electrical
CAT II:
distribution system, such as measurements on household appliances or
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 providing a detailed
description of any damage.