"Easy Method for Connecting Motors:"

From: D. Cramer electrk@dslextreme.com

How to correctly connect high or low voltages to typical three phase motors.
I found using the "11" rule is very handy. It goes as follows:

For low voltage connections 

A typical three phase motor has 9 wires to be connected, typically numbered T1 - T9.

All Connections have three wires connected together.

1. Connect 4, 5 and 6 together. ( three wires )
2. Connect 7 and 1 together. THINK OF THIS AS 71. Connect one phase here. ( three wires )
3. Add 11 to 71 ( 71 + 11 = 82 )
4. Therefore 8 and 2 are connected together. THINK OF THIS AS 82. Connect one phase here. ( three wires )
5. Add 11 to 82 ( 82 + 11 = 93 )
6. Therefore 9 and 3 are connected together. THINK OF THIS AS 93. ( three wires )


For high voltage connections

A typical three phase motor has 9 wires to be connected, typically numbered T1 - T9.

             All connections have two wires connected together.

1. Connect one phase to 1. ( two wires )
2. Connect one phase to 2. ( two wires )
3. Connect one phase to 3. ( two wires )
4. Connect 4 and 7 together. THINK OF THIS AS 47. ( two wires )
5. Add 11 to 47 ( 47 + 11 = 58 ).
6. Therefore 5 and 8 are connected together. THINK OF THIS AS 58. ( two wires )
7. Add 11 to 58 ( 58 + 11 = 69 )
Therefore 6 and 9 are connected together. THINK OF THIS AS 69. ( two wires )

 


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