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#2255 - 06/29/01 04:37 PM dc shunt motor
frank Offline
Member

Registered: 05/29/01
Posts: 373
Loc: windsor ontario canada
what will happen if you lose the shunt field
on a dc shunt motor

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#2256 - 06/30/01 08:00 AM Re: dc shunt motor
donles Offline
Member

Registered: 04/28/01
Posts: 82
Loc: 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.

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#2257 - 06/30/01 10:02 AM Re: dc shunt motor
frank Offline
Member

Registered: 05/29/01
Posts: 373
Loc: 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

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#2258 - 09/02/01 05:48 AM Re: dc shunt motor
bordew Offline
Member

Registered: 08/27/01
Posts: 155
Loc: 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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