3 Phase Motor Wiring Diagram Change Direction

The direction of rotation for the motor shaft of an ac motor is defined in iec 60034 8 as either cw clockwise or ccw counter clockwise when looking into the motor shaft. The other 9 wires would be connected as in a 9 wire motor note in a 9 wire motor the equivalent of t10 t11 and t12 are internally connected together. Three phase motors are more efficient than single phase motors and are commonly found in applications requiring more than 7 5 horsepower.

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They can also be found in large residential complexes and appliances requiring a large amount of power.

3 phase motor wiring diagram change direction. Although these systems may seem intimidating at first a walkthrough on 3 phase wiring for dummies will help clarify the whole situation. This is done by interchanging two of the line cables e g switch l1 and l2. L1 to t1 l2 to t2 l3 to t3 t4 to t7 t5 to t8 and t6. On a 12 wire motor wired for high voltage i e 480v 10t 11t and 12t must be connected together but not connected to anything else.

Swapping phase a with phase b re orders the fluxes so that the flux rotates in the opposite direction. The direction of rotation of a three phase ac motor can be changed at the terminal box. Three phase electrical wiring installation in home iec nec. In this video we explain how to change 3 phase motor direction in direct online starter and veriable frequency drive run and also explain in star delta starter we know we can change the direction.

Multi speed 3 phase motor 3 speeds 1 direction power control diagrams one line diagram of simple contactor circuit. Different regions may use different voltages. Three phase systems are extremely common in industrial and commercial settings. Although the national electric code does not specify specific conductor colors for three phase current it is common to use black red and blue wires to identify lines l1 l2 and l3 respectively.

The windings in a 3 phase motor when activated by a 3 phase supply produce a rotating magnetic field in the rotor area of the motor. W2 cj2 ui vi wi w2 cj2 ui vi wi a cow voltage y high voltage z t4 til t12 10 til t4 t5 ali l2. Three phase wiring diagrams always use wiring diagram supplied on motor nameplate. Capacitor motor single phase wiring diagrams always use wiring diagram supplied on motor nameplate.