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dc shunt motor #2255
06/29/01 06:37 PM
06/29/01 06:37 PM
F
frank  Offline OP
Member
Joined: May 2001
Posts: 376
windsor ontario canada
what will happen if you lose the shunt field
on a dc shunt motor

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Re: dc shunt motor #2256
06/30/01 10:00 AM
06/30/01 10:00 AM
D
donles  Offline
Member
Joined: Apr 2001
Posts: 83
Pennsylvania
Quote
Originally posted by frank:
what will happen if you lose the shunt field
on a dc shunt motor


I think it will overspeed. Generally, there is a field loss relay in series with the field that would open the control circuit if it were to drop out.

Re: dc shunt motor #2257
06/30/01 12:02 PM
06/30/01 12:02 PM
F
frank  Offline OP
Member
Joined: May 2001
Posts: 376
windsor ontario canada
ok good because thats what i put on the exam.
i no a series motor will overspeed but i was not sure about a shunt thanks

Re: dc shunt motor #2258
09/02/01 07:48 AM
09/02/01 07:48 AM
B
bordew  Offline
Member
Joined: Aug 2001
Posts: 142
Vienna,Ohio, USA
Quote
Originally posted by frank:
ok good because thats what i put on the exam.
i no a series motor will overspeed but i was not sure about a shunt thanks


If you oopen the field switch to a shunt motor if will take off and self-destruct, this is why they put a field-loss relay in the control circcuit to prevent this from happening.


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