Frequently Asked Questions & Answers
Across the line connection of multi-lead motors
Question: Is it possible to connect a multi-lead motor across the line? If so, what is the procedure for doing this?
Answer: Yes, this is possible. In order to connect a multi-lead motor across the line, you must use the "RUN" connection for the appropriate voltage on the connection plate. For example, the diagram below shows the "RUN" connection as Full Winding connection. Motor leads T1 & T7 are combined and connected to line 1. Leads T2 & T8 are combined and connected to line 2. Leads T3 & T9 are combined and connected to line 3. Refer to the following diagram and table for further information.
Double Delta Connection
Table 4
Voltage |
L1 |
L2 |
L3 |
OPEN |
Full Winding |
(T1, T7) |
(T2, T8) |
(T3, T9) |
--------- |
Part Winding |
T1 |
T2 |
T3 |
(T7) (T8) (T9) |
Note: To reverse the direction of rotation, interchange connections L1 and L2.
Each lead may have one or more cables comprising that lead. In such case, each cable will be marked with the appropriate lead number.
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