How to Wire an IEC 12 Wire 3-Phase Motor
Wiring an IEC 12 wire motor can be accomplished in several ways Either with a constant run, low or high voltage Delta configuration, this 12-wire motor is versatile and has a high starting torque, regardless of the choice of configuration. With simple basic knowledge of motors and electricity, anyone can connect the wires on this motor.
- Difficulty:
- Moderately Easy
Instructions
Things You'll Need
- Wire pliers
- Wire strippers
- Screw drivers, Phillips and slotted
- Wire nuts
- Plastic black vinyl tape
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1
Remove all power from the contactors and old motor connection box. Remove the cover from the motor and set the screws away to replace later. Strip all wires, motor leads and power input approximately one inch from the ends. When making the final connections twist all wires in a clockwise direction with the pliers and twist on the wire nuts in the same manner. Use plenty of plastic black vinyl tape to cover the wire nuts as some motors may have a high current associated with the motor start and run conditions.
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2
Wire the motor in a Low voltage constant run Delta in the following manner. Connect U1,U5, W6,W2 to L1, tie U6,U2,V1,V5 to L2 and terminate V6,V2,W1,W5 to L3.
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3
Connect the motor in the following manner for a High voltage Delta run configuration. Join U2 and U5 twist and wire nut. Join V2 and V5 twist and wire nut. Do the same with W2 and W5. Finally tie L1 to U1,W6, then L2 to V1,U6 and L3 to W1,V6. Terminate each and insulate with wire nuts and tape.
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4
Connect the proper grounding wire to the motor frame. The main power to the motor can now be applied to the circuit to test for proper rotation.
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1
Tips & Warnings
Follow all state and local codes when wiring any electrical motors.
Before you begin any wiring project make sure you read all instructions and understand exactly what each direction means.
