Interested to Buy Any Domain ? << Click Here >> for more details...
How to identify Motor leads in their order coming out from
winding without tag (U1, V1, W1 & U2, V2, W2)?
- 6 Answers
- 51542 Views
- ABB, I also Faced
- E-Mail Answers
Answer Posted / pswin
Find three windings in the motor by using multimeter.Then
connect three windings to be star connection.After that try
to run the motor by supply.See the motor rotation from
shaft side.If the motor rotation is counterclockwise,change
any one of phase to another(R&B,R&Y or Y&B).Then u will see
motor will run in clockwise direction. If we get clockwise
rotation, u can mark R to U1, Y to V1 and B to W1. The rest
U2,V2 and W2 will be at the star point.Now U can mark as
U2,V2 and W2 at the other ends of each U1,V1 and W1.If u
know about phase sequence very well, u will find that motor
terminals are not important.Important thing is which
rotation we need and how we will feed to get right rotation
we want.
| Is This Answer Correct ? | 4 Yes | 58 No |
Post New Answer View All Answers
Don't you have similar question banks related to Oral Certification Examination conducted by Mercantile Marine Departments / Directorate of Shipping, Ministry of Shipping for Electro Technical Officer?
What is the maximum and minimum rating of UPS?
Pls mail me utility & Dg related question with answer
1600 KVA ka transformer hi aghar lt side par 800A aur voltage 420 ho to HT side ki cable ki rating keya ho gi?
When calculation of fault current and fault Kva is to be done,why always we use per unit value and why we consider the base kva?
What are the functions of different probes used in cro?
What is the function of electron gun used in crt?
all interview questions with answers of ntpc (2000-2009
What is the Good Earth resistance value of G.I & Cu. Chemical Earthing & Normal Pipe Earthing?
explain safety measures in alternator?
what is ramping rate of generator
How to calculate KVA/VA rating of PT or CT from primary & secondary voltage or primary & secondary current?
how to find 5 kilo meter long under ground 33 kv cable fault location if IR VALUE shows 0.05 M ohm @5000 volt.and cable fault locator shows some time fault distance 3 kilo meter ,3.7 kilo meter and some time 1 kilo meter? now how to find the fault location that where is leakage. note--it is tested with 5000 kv megger and insulation resistance is 0.05 M ohm. and some time 0.03 M ohm comes.
what is mean by PIR in circuitbreaker and give me detail of that?
i have some screw comprressor with 630kw power,i have established them with simple star to delta circuit,by the way there is so much inertia when the screw comprressors start, can you offer me contactors power with 400vac or any cataluge to choose the contactors
