How to do Motor terminal connection

This part is very important to ensure our electric motor installation is done perfectly and running properly.If we wrong setting for voltage value connection for induction motor,it can cause serious damage.

But dont worry,this time i explain detail how to determine a motor terminal connection for suitable with our power supply.The key is motor nameplate.We can found the motor connection and their suitable voltage value.For more detail,please refer a picture below

motor connection

From this motor picture ,we can see it haveĀ 4 connection and 2 voltage value.If our power supply voltage is 415 VAC for 3 phase,we need to setting the motor terminal in STAR connection.

It mean terminal cooper plate W2,U2 and V2 connect in one line. Here i attached picture about motor terminal in STAR position.

Related image

If our power supply is 200 VAC 3 phase,we need to connected the cooper bar terminal in DELTA position.It mean, a connection are U1 with W2,V1 with U2 and W1 with U2.

Related image

If you want connect the induction motor with star delta starter,what you must to do is take out all cooper bar from motor terminal.It mean we not use a cooper bar.Because the star delta starter use a 6 cables for run the motor.

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

Help us improve. Rate this post

Leave a Reply

Your email address will not be published. Required fields are marked *

2017 @ All rights reserved by Electricalmastar.com