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Usually utilization category is mentioned in most of the switch gear, with the above contactor stating to be used under AC1 - resistive load & AC3 for motor usage. In electrical engineering utilization categories are defined by IEC standards [1] and indicate the type of electrical load and duty cycle of the loads to ease selection of contactors ...
The current rating of the contactor depends on utilization category. Example IEC categories in standard 60947 are described as: AC-1 - Non-inductive or slightly inductive loads, resistance furnaces; AC-2 - Starting of slip-ring motors: starting, switching-off; AC-3 - Starting of squirrel-cage motors and switching-off only after the motor is up ...
AC3 or AC-3 may refer to: Science and technology. Dolby AC-3, ... AC-3, an IEC utilization category; Ambedkar Community Computing Center (AC3) Transportation
NEMA contact ratings are how much current at a rated voltage a relay or other pilot device can switch. The current rating of smaller NEMA contactors or their auxiliaries are defined by NEMA ICS 5: Industrial Control and Systems, Control Circuit and Pilot Devices [1] standard.
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A schematic representation of long distance electric power transmission. From left to right: G=generator, U=step-up transformer, V=voltage at beginning of transmission line, Pt=power entering transmission line, I=current in wires, R=total resistance in wires, Pw=power lost in transmission line, Pe=power reaching the end of the transmission line, D=step-down transformer, C=consumers.
AC-15, the IEC Utilization categories indicating the type of electrical load; AC-15, one of the first guitar amplifiers designed by Vox; Autovía AC-15, a Spanish highway in the province of A Coruña, Galicia; Honda AC15, a retro style single cylinder motorcycle; USS Brutus, former steamer Peter Jebsen, a collier in the United States Navy
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