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Anonymous Poster

Tripping system

02/09/2009 4:48 AM

There are several distribution boards connected to a single source.

However, when branch 1 of DB-A with lighting loads is switched ON, other branch circuits of the other DBs are tripping. Also, once branch 1 of DBA is already switched ON, the tripped branches from other DBs can be reset.

What could be the possible cause and solution to this.

Appreciate any advise. Thank you.
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sb
Guru

Join Date: Mar 2007
Posts: 2550
Good Answers: 103
#1

Re: Tripping system

02/09/2009 5:04 AM

Check the type of loading on the DB.

The switching on must be creating a voltage transient and this transient is tripping the other relays.

Put a bit of time-delay on the relays or compensate the inductive load by capacitors.

__________________
 Fantastic ideas for a Fantastic World, I make the illogical logical.They put me in cars,they put me in yer tv.They put me in stereos and those little radios you stick in your ears.They even put me in watches, they have teeny gremlins for your watches
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cyannt
Participant

Join Date: Feb 2009
Posts: 4
#2
In reply to #1

Re: Tripping system

02/09/2009 5:48 AM

The loads on DBA are street pole lights, while the other DBs are residential equipment loads. thanks
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sb
Guru

Join Date: Mar 2007
Posts: 2550
Good Answers: 103
#3
In reply to #2

Re: Tripping system

02/09/2009 7:19 AM

It is likely the the lights are inductive and are creating the voltage spikes on switch on tripping the system.

Check compensators.

__________________
 Fantastic ideas for a Fantastic World, I make the illogical logical.They put me in cars,they put me in yer tv.They put me in stereos and those little radios you stick in your ears.They even put me in watches, they have teeny gremlins for your watches
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cyannt
Participant

Join Date: Feb 2009
Posts: 4
#4
In reply to #3

Re: Tripping system

02/09/2009 9:11 AM

What are compensators
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