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How to identify Motor leads in their order coming out from
winding without tag (U1, V1, W1 & U2, V2, W2)?
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Answer Posted / kofibahari
We assume this is a 6 leads out untagged. First we will get
the the continuity of each leads by using a multimeter.
Assuming we have done the continuity test, by then we can
get three pairs with continuity. Having this three pairs we
cannot really tell that our phase is right, so for us to run
the motor in the exact phase, we will get the right phase.
First we marked the first pair as U1 & U2 as our reference,
leaving the two pairs untagged. We then get one pair of the
untagged and connect one end to U2. We will supply U1 & U2
with a voltage lower than the rated voltage of the motor,
ex. if the rated voltage of the motor is 440V then we will
supply it with 220V or lower. We now measure the voltage
from U1 and the other end of the untagged pair not connected
to U2. If the voltage is more than the supply voltage then
the phase is right if not reverse the connection then put
marking V1 & V2. Do this procedure for the remaining
untagged pair. Assuming we already done our phasing we test
run the motor with a lower voltage again to avoid burning
the motor and measure if the currents in each phase are the
same.
| Is This Answer Correct ? | 44 Yes | 11 No |
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