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How to do....

sundula · 2012-08-10 09:13:26

I need a relay or contactor that will break a cable on the loss of power and then close again a second or so later. Its for an alarm, when mains power fails the alarm switchs to battery but there is a problem with the system which can be over come by disconnecting and reconnecting the battery, when this is done the system…

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10-08-2012 10:13am

#1

sundula

Registered Users Posts: 867 ✭✭✭

Join Date: January 2005

Posts: 789

I need a relay or contactor that will break a cable on the loss of power and then close again a second or so later.

Its for an alarm, when mains power fails the alarm switchs to battery but there is a problem with the system which can be over come by disconnecting and reconnecting the battery, when this is done the system restarts fully armed operating on the battery backup until mains power is restored.

How or what do I need to break battery supply on loss of mains power for a second or two and then reconnect it.(without mains power)

Thanks

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#2 10-08-2012 9:13pm
meercat

Registered Users Posts: 4,745 ✭✭✭

Join Date: November 2009

Posts: 4656

think you may be over complicating this

would it not be simpler and cheaper to repair the panel

maybe the boys in home security might help(theyre great there)

http://www.boards.ie/vbulletin/forumdisplay.php?f=1366

mods might move it if appropriate

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#3 10-08-2012 11:08pm
bucky08

Registered Users Posts: 153 ✭✭

Join Date: April 2012

Posts: 134

You could use a shrack timer to do this

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