Electrical Motor Connection

ELECTRICAL MOTOR CONNECTION:

 

How to Change Rotation of Motor in Clockwise Direction

No Present Motor Connection: Change Direction in Clockwise
1 R Phase Connected to U1 W2 R Phase Connected to U1 V2
Y Phase Connected to V1 U2 Y Phase Connected to V1 W2
B Phase Connected to W1 V2 B Phase Connected to W1 U2
2 R Phase Connected to W1 V2 R Phase Connected to W1 U2
Y Phase Connected to U1 W2 Y Phase Connected to U1 V2
B Phase Connected to V1 U2 B Phase Connected to V1 W2
3 R Phase Connected to V1 U2 R Phase Connected to V1 W2
Y Phase Connected to W1 V2 Y Phase Connected to W1 U2
B Phase Connected to U1 W2 B Phase Connected to U1 V2

Change Rotation in Anticlockwise Direction

No Present Motor Connection: Change Direction in Anticlockwise
1 R Phase Connected to U1 V2 R Phase Connected to U1 W2
Y Phase Connected to W1 U2 Y Phase Connected to W1 V2
B Phase Connected to V1 W2 B Phase Connected to V1 U2
2 R Phase Connected to W1 U2 R Phase Connected to W1 V2
Y Phase Connected to V1 W2 Y Phase Connected to V1 U2
B Phase Connected to U1 V2 B Phase Connected to U1 W2
3 R Phase Connected to V1 W2 R Phase Connected to V1 U2
Y Phase Connected to U1 V2 Y Phase Connected to U1 W2
B Phase Connected to W1 U2 B Phase Connected to W1 V2

Thumb Rule :

Check Phase Winding Starting Phase and Connected ending Connection of That Phase winding to the one Phase after the Phase where Phase winding Starting lead is connected. (Ex If U1 is connected to R Phase than Connect U2 to B Phase, If V1 is connected to Y Phase than V2 should be connected to R Phase)

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About Jignesh.Parmar
Jignesh Parmar has completed M.Tech (Power System Control), B.E(Electrical) from Gujarat University. He has more than 14 years experience in Power Transmission-Power Distribution-Electrical energy theft detection-Electrical Maintenance-Electrical Projects(Planning-Designing-coordination-Execution). He is Presently associate with one of the leading business group as a Deputy Manager at Ahmedabad,India. He is Freelancer Programmer of Advance Excel and design useful Excel Sheets of Electrical Engineering as per IS,NEC,IEC,IEEE codes. He is technical Author for "Electrical Mirror" and "Electrical India" Magazines. He is Technical Blogger and Familiar with English, Hindi, Gujarati, French languages. He wants to Share his experience & knowledge and help technical enthusiasts to find suitable solutions and updating themselves on various Engineering Topics.

2 Responses to Electrical Motor Connection

  1. md says:

    mr jignesh can 9 terminal motor runs on star delta starter

  2. Paul Semler says:

    I’m trying to get a 400 v 3 phase motor to work on a table saw Feeder. It’s rated at 1 hp.
    Found an old machine motor that’s rated at 400 v also & thought I’d try hooking up my shop (using a 3 phase motor) generated 220/208 v 3 phase. It runs other equipment fine. Hopefully it will run the 440 v motor. No matter if it’s less power that the 1 hp, less is ok. Any idea’s or suggestions there ?

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