ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals
ECN Shout Chat
ShoutChat
Recent Posts
Increasing demand factors in residential
by gfretwell - 03/28/24 12:43 AM
Portable generator question
by Steve Miller - 03/19/24 08:50 PM
Do we need grounding?
by NORCAL - 03/19/24 05:11 PM
240V only in a home and NEC?
by dsk - 03/19/24 06:33 AM
Cordless Tools: The Obvious Question
by renosteinke - 03/14/24 08:05 PM
New in the Gallery:
This is a new one
This is a new one
by timmp, September 24
Few pics I found
Few pics I found
by timmp, August 15
Who's Online Now
1 members (Scott35), 271 guests, and 12 robots.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
#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.


Link Copied to Clipboard
Powered by UBB.threads™ PHP Forum Software 7.7.5