Technical data

June 2005
CAT.02.02.S.K.CD For more information visit: www.EatonElectrical.ca
179
XT IEC Power Control
Reference Data
Annex A (informative)
Table 233. Examples of Utilization Categories for Low-Voltage Switchgear and Controlgear
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(Continued)
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60947-1 © IEC: 2004.
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By plugging is understood stopping or reversing the motor rapidly by reversing motor primary connections while the motor is running.
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By inching (jogging) is understood energizing a motor once or repeatedly for short periods to obtain small movements of the driven mechanism.
Category Typical Applications Relevant IEC Product Standard
Nature of Current — AC (Continued)
AC-31 Non inductive or slightly inductive loads 60947-6-1
AC-33 Motor loads or mixed loads including motors, resistive loads and up to 30% incandescent lamp loads 60947-6-1
AC-35 Electric discharge lamp loads 60947-6-1
AC-36 Incandescent lamp loads 60947-6-1
AC-40 Distribution circuits comprising mixed resistive and reactive loads having a resultant inductive
reactance
60947-6-2
AC-41 Non-inductive or slightly inductive loads, resistance furnaces 60947-6-2
AC-42 Slip-ring motors: starting, switching off 60947-6-2
AC-43 Squirrel-cage motors: starting, switching off motors during running 60947-6-2
AC-44 Squirrel-cage motors: starting, plugging
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, inching
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60947-6-2
AC-45a Switching of electric discharge lamp controls 60947-6-2
AC-45b Switching of incandescent lamps 60947-6-2
AC-51 Non-inductive or slightly inductive loads, resistance furnaces 60947-4-3
AC-52a Control of slip ring motor stators: 8 h duty with on-load currents for start, acceleration, run 60947-4-2
AC-52b Control of slip ring motor stators: intermittent duty 60947-4-2
AC-53a Control of squirrel-cage motors: 8 h duty with on-load currents for start, acceleration, run 60947-4-2
AC-53b Control of squirrel-cage motors: intermittent duty 60947-4-2
AC-55a Switching of electric discharge lamp controls 60947-4-3
AC-55b Switching of incandescent lamps 60947-4-3
AC-56a Switching of transformers 60947-4-3
AC-56b Switching of capacitor banks 60947-4-3
AC-58a Control of hermetic refrigerant compressor motors with automatic resetting of overload releases:
8 h duty with on-load currents for start, acceleration, run
60947-4-2
AC-58b Control of hermetic refrigerant compressor motors with automatic resetting of overload releases:
intermittent duty
60947-4-2
AC-140 Control of small electromagnetic loads with holding (closed) current ≤ 0,2 A, e.g. contactor relays 60947-5-2
Nature of Current — AC and DC
A Protection of circuits, with no rated short-time withstand current 60947-2
B Protection of circuits, with a rated short-time withstand current 60947-2
Nature of Current — DC
DC-1 Non-inductive or slightly inductive loads, resistance furnaces 60947-4-1
DC-3 Shunt-motors: starting, plugging
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, inching
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, Dynamic breaking of motors 60947-4-1
DC-5 Series-motors: starting, plugging
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, inching
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, Dynamic breaking of motors 60947-4-1
DC-6 Switching of incandescent lamps 60947-4-1
DC-12 Control of resistive loads and solid-state loads with isolation by optocouplers 60947-5-1
DC-12 Control of resistive loads and solid-state loads with optical isolation 60947-5-2
DC-13 Control of electromagnets 60947-5-1
DC-13 Control of electromagnets 60947-5-2
DC-14 Control of electromagnetic loads having economy resistors in circuit 60947-5-1
DC-20 Connecting and disconnecting under no-load conditions 60947-3
DC-21 Switching of resistive loads, including moderate overloads 60947-3
DC-22 Switching of mixed resistive and inductive loads, including moderate overloads (e.g. shunt motors) 60947-3
DC-23 Switching of motor loads or other highly inductive loads (e.g. series motors) 60947-3
DC-31 Resistive loads 60947-6-1
DC-33 Motor loads or mixed loads including motors 60947-6-1
DC-36 Incandescent lamp loads 60947-6-1
DC-40 Distribution circuits comprising mixed resistive and reactive loads having a resultant inductive
reactance
60947-6-2
DC-41 Non-inductive or slightly inductive loads, resistance furnaces 60947-6-2
DC-43 Shunt-motors: starting, plugging

, inching
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, Dynamic breaking of DC 60947-6-2
DC-45 Series-motors: starting, plugging

, inching

, Dynamic breaking of DC 60947-6-2
DC-46 Switching of incandescent lamps 60947-6-2