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Question
```can three phase induction motor rotate with only 2 phases
connected```
Question Submitted By :: Dumith
I also faced this Question!!     Rank Answer Posted By

Re: can three phase induction motor rotate with only 2 phases connected
# 1
yes
 Is This Answer Correct ? 35 Yes 5 No
Ram Kumar

Re: can three phase induction motor rotate with only 2 phases connected
# 2
Yes a three phase Induction motor can run by 2 phase.
 Is This Answer Correct ? 30 Yes 4 No
Deependra Shakya

Re: can three phase induction motor rotate with only 2 phases connected
# 3
Yes,But in Lower Efficiency
 Is This Answer Correct ? 11 Yes 4 No
Sandip

Re: can three phase induction motor rotate with only 2 phases connected
# 4
Suppose 3 phase induction motor is running but if one phase
trips, it will continue to run but at reduced torque -
jessy

 Is This Answer Correct ? 14 Yes 3 No
Jessy

Re: can three phase induction motor rotate with only 2 phases connected
# 5
If the motor is in idle condition and if u want to start
the motor and rotate it will give u a humming noise only
and will not rotate.But if it is already in running
condition and suddenly if it happens to run in the two
phase it will run ,and gradually it will get over heated
and at one stage it will trip or burn

 Is This Answer Correct ? 58 Yes 1 No
Sri

Re: can three phase induction motor rotate with only 2 phases connected
# 6
yes, If the motor is in idle condition and if u want to
start
the motor and rotate it will give u a humming noise only
and will not rotate.But if it is already in running
condition and suddenly if it happens to run in the two
phase it will run ,and gradually it will get over heated
and at one stage it will trip or burn

 Is This Answer Correct ? 11 Yes 2 No
Kandavel

Re: can three phase induction motor rotate with only 2 phases connected
# 7
but sri, i have one experience, the motor was in idle
condition. but with only 2 phases it rotated. can anybody
explain how a rotating magnetic field is created when there
is only 2 phases

 Is This Answer Correct ? 4 Yes 1 No
Dum

Re: can three phase induction motor rotate with only 2 phases connected
# 8
 Is This Answer Correct ? 2 Yes 4 No
Niranajn

Re: can three phase induction motor rotate with only 2 phases connected
# 9
It will work but with 57% efficiency
 Is This Answer Correct ? 4 Yes 4 No
Sam Khanji

Re: can three phase induction motor rotate with only 2 phases connected
# 10
if u start with 2phase , it won't rotate because there is
no rotating magnetic field, ... while running if any one
phase trips it will rotate

 Is This Answer Correct ? 1 Yes 9 No
Dinesh Kannan

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