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tigerdon
Commentator

Join Date: Jun 2011
Posts: 79

Motor Automatically Started While Putting Test To Service Position

05/13/2014 10:47 AM

Dear All,

This is ACB Breaker control motor which got started automatically while putting breaker in test to service position

Please suggest troubleshooting

Breaker has only DCS stop command

LCS provided with T-N-C switch (without locking arrangement in trip position)

Regards,

T.D
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Pathfinder Tags: T-N-C Trip Neatral Close Swtich
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Tornado
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Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Richland, WA, USA
Posts: 21017
Good Answers: 795
#1

Re: Motor Automatically started while putting test to service position

05/13/2014 11:13 AM

Favor hablar inglés.

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tigerdon
Commentator

Join Date: Jun 2011
Posts: 79
#2
In reply to #1

Re: Motor Automatically started while putting test to service position

05/13/2014 11:25 AM

Not getting anything .....can you out in proper English....
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Tornado
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Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

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Location: Richland, WA, USA
Posts: 21017
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#3
In reply to #2

Re: Motor Automatically started while putting test to service position

05/13/2014 11:35 AM

That's the whole idea. Please proceed.

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lyn
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Join Date: Oct 2008
Posts: 42355
Good Answers: 1693
#4

Re: Motor Automatically started while putting test to service position

05/13/2014 11:41 AM

Disconnect from motor; trouble shoot; repair faults; reconnect to motor; test again.
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redfred
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Engineering Fields - Electrical Engineering - Been there, done that. Engineering Fields - Control Engineering - New Member

Join Date: Dec 2008
Location: Long Island NY
Posts: 15600
Good Answers: 981
#5

Re: Motor Automatically started while putting test to service position

05/13/2014 2:53 PM

Hire a qualified electrician/electrical engineer.

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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
Posts: 32175
Good Answers: 839
#6

Re: Motor Automatically started while putting test to service position

05/13/2014 5:02 PM

...preferably one who can redesign, install and commission the starter to the desired, safe, operating condition!

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ramvinod
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Join Date: Jun 2007
Location: chennai,India
Posts: 592
Good Answers: 19
#7

Re: Motor Automatically Started While Putting Test To Service Position

05/13/2014 11:51 PM

ACBs will have motor mechanism to charge the closing spring. ACBs will close when the charge is released from the spring, this is done by closing coil. When the charge is released from the spring, the motor will act and the charge the spring and the ACB will be ready for next closing cycle. The charging the spring can be done manually also. May be in your case , spring is in discharged condition and when you put it on to service position the motor is acting to charge the spring. Please check

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Users who posted comments:

lyn (1); PWSlack (1); ramvinod (1); redfred (1); tigerdon (1); Tornado (2)

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