Monday 18 May 2015

Utilization category of contractors





Utilization category

of contractors Utilization Category















Type of Application
AC-1
Non-inductive i.e.: heaters, furnace
AC-2
Slip-ring motors: switching off
AC-3
Squirrel-cage motors: starting, switches off motors for crane service
AC-4
Squirrel-cage motors: starting, plugging, inching
AC-5a
Switching of discharge lamps
AC-5b
Switching of incandescent lamps
AC-6a
Switching of transformers
AC-6b
Switching of capacitor banks
AC-7a
Slightly inductive loads in household appliances: examples: mixers, blenders
AC-7b
Motor-loads for household appliances: examples: fans, central vacuum
AC-8a
Hermetic refrigerant compressor motor control with manual resetting overloads
AC-8b
Hermetic refrigerant compressor motor control with automatic resetting overloads
AC-15
Control of A.C. electromagnetic loads
DC-1
Non Inductive or slightly inductive loads, resistance furnaces, heaters
DC-3
Shunt-motors, starting, plugging , inching , dynamic braking of motors
DC-5
Series-motors, starting, plugging, inching, dynamic braking of motors
DC-6
Switching of incandescent lamps
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