AEMC MN312 User Manual

AC Current Probe
Models MN312 and MN313
User Manual
DESCRIPTION
The MN312/313 (Cat. #2116.24/2116.25) ar e the latest in compact AC current probes. Designed to
meet the most stringent demands in industry and electrical contracting, they also meet the latest safety
and performance standards. The probes have a measurement range up to 200Arms w hich make them
perfect tools for measurements
MN312/MN313 are compatible with any AC ammeter, multimeter, or other current measurement with an
input impedance low er than 1 . To achiev e the stated accura cy, use the MN312/MN313 w ith an
ammeter having an accuracy of 0.75% or better.
WARNING
The safety w arnings are prov ided to ensure t he safety of personnel and proper operation of the
instrument. Read the instruction completely.
• Use caution on any circuit: potentially high voltages and currents may be present and may pose
a shock hazard.
• Do not use the probe if damaged. Always connect the current probe to the measuring device
before it is connected around the conductor
• Do not use on non-insulated conductor w ith a potential to ground greater than 600V C AT III
pollution 2. Use extreme caution when clamping around bare conductors or bus bars.
• Before each use, inspect the probe; look for cracks in housing or output cable insulation.
• Do not use clamp in wet environment or in locations that hazardous gases exist.
• Do not use the probe anywhere beyond the tactile barrier.
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.
DEFINITION OF MEASUREMENT CATEGORIES
CAT I: For measurements on circuits not
protected secondaries, signal level, and limited energy circuits.
CAT II: For measurements performed on circuits directly connected to the electrical distribution sy stem.
Examples are measurements on household appliances or portable tools.
CAT III: For measurements performed in the building inst
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.
with DMMs, recorders, pow er and harmonic meters. The Models
directly connected to the AC supply w all outlet such as
allation at the distribution lev el such as on