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#2255 06/29/01 07:37 PM
Joined: May 2001
Posts: 378
F
frank Offline OP
Member
what will happen if you lose the shunt field
on a dc shunt motor

#2256 06/30/01 11:00 AM
Joined: Apr 2001
Posts: 84
D
Member
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.

#2257 06/30/01 01:02 PM
Joined: May 2001
Posts: 378
F
frank Offline OP
Member
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

#2258 09/02/01 08:48 AM
Joined: Aug 2001
Posts: 142
B
Member
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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