AEMC instruments MN290 User Manual

AEMC instruments MN290 User Manual Manual pdf 1 page image

AC Current ProbeModels MN290 and MN291User ManualDESCRIPTIONThe MN290/MN291 (Catalog #2115.83 and #2115.84) are the latest in compact AC Current probes.Designed to meet the most stringent demands in industry and electrical contracting, they also meet thelatest safety and performance standards. The probes have a measurement range up to 240 Arms whichmakes them perfect tools for measurement with DMMs without AC range, recorders. The ModelsMN290/MN291 are compatible with any DC voltmeter, multimeter, or other voltage measurementinstrument that is capable of displaying 100 mV of output per amp of measured current, voltmeteraccuracy of 0.75% or better and an input impedance of ≥ 1 MΩ.WARNINGThe safety warnings are provided to ensure the safety of personnel and proper operation of theinstrument. Read the instruction completely.• Use caution on any circuit: potentially high voltages and currents may be present and may posea shock hazard.• Do not use the probe if damaged. Always connect the current probe to the measuring devicebefore it is connected around the conductor• Do not use on non-insulated conductor with a potential to ground greater than 600V CAT IIIpollution 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 SYMBOLSThis symbol signifies that the current probe is protected by double or reinforced insulation. Useonly factory specified replacement parts when servicing the instrument.This symbol signifies CAUTION! and requests that the user refer to the user manual beforeusing the instrument.This is a type A current sensor. This symbol signifies that application around and removal fromHAZARDOUS LIVE conductors is permitted.DEFINITION OF MEASUREMENT CATEGORIESCAT I: For measurements on circuits not directly connected to the AC supply wall outlet such asprotected 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 onhardwired equipment in fixed installation and circuit breakers.CAT IV: For measurements performed at the primary electrical supply (<1000V) such as on primaryovercurrent protection devices, ripple control units, or meters.RECEIVING YOUR SHIPMENTUpon receiving your shipment, make sure that the contents are consistent with the packing list. Notifyyour distributor of any missing items. If the equipment appears to be damaged, file a claim immediatelywith the carrier and notify your distributor at once, giving a detailed description of any damage.

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