How to identify Motor leads in their order coming out from
winding without tag (U1, V1, W1 & U2, V2, W2)?
- 6 Answers
- 48483 Views
- ABB, I also Faced
- E-Mail Answers
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 |
Post New Answer View All Answers
What are books to be referred for KPTCL exam?
Hi,I am working in abroad for more than 3 years in a company operating with 11kv and 6.4 MW power. I need c licence in India,can I? some other says only i can get if i work for 2 years in india only! anybody kindly clarify by doubt.Thanks
sir i have a car stereo system and there is jack on him so can u tell me a way to find out their power terminals on the jack or on the circuit board"
why ss stablity limit is more transient stablity limit?
when we decide to use soft starter drive or vfd drive in mcc to operate apump?
How to select a contactor? How many types of contactors are available
What willbe change in programming when we use 5/3 solenoid inplace of 5/2 in operating of a cylinder?
any earth foult trip the relay but in welding time not trip by earth foult
During Testing of Maintenance Free Earthing, How deep should be the Spikes of Earth Test Meter should be inserted in the soil(one spike is 15 Meter & Other spike is 30 Mtrs away from the Main Earth Electrode. Because, recently, we observed that when spike is inserted 3-4 Inch in the earth- results are better, If spike is inserted 1 feet deep than results are increasing.
What is maximum power transfer theorem?
hi frenz,its aswathy.i hve aplied for the hpcl test on feb,pls send the test patern & the placement papers as soon as possible. mail-id :kjaswathy@gmail.com
why lightning arrestor are made in two stack of insulator but why not cvt
design of IGBT firing circuit for 11KV
what is maxemo work permit procedure
HOW TO CALCULATE THE VT SIZING?
