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Fire Alarm Power Supply Issues

 
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Old 04-28-2015, 06:40 PM   #1
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Fire Alarm Power Supply Issues


I service an apartment complex where there are 32 - 3 story buildings. Each building has a single fire alarm panel, a 2 zone Firelite MS-2. There is a pad transformer that supplies power for every 2 buildings. One of the transformers is spiking from 120v to 132v. When the power spikes, the fire alarm goes into a trouble condition and indicates "power supply". I have had my meter on the input power terminals and witnessed this happening. As soon as the power goes back to 120 the panel clears. I called Comenwelth Edison (the local power company), they asked if anyone in the building was having problems (none reported) and refuse to do anything. I have replaced the panels, power supplies, called Firelite, they said install a UPS, that didn't help. I just installed a Trip lite isolation transformer, that didn't help either. I am open for any help on this mater. Is there a product available that will give me a constant voltage regardless of what the supply voltage goes up or down to???
Please help me on this, I am really lost here.
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Old 04-28-2015, 06:58 PM   #2
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Re: Fire Alarm Power Supply Issues


I'm surprised Firelite didn't offer any help. They have been good to work with.

Look at this:

http://www.cooperindustries.com/cont...wersupply.html

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Old 04-28-2015, 07:31 PM   #3
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Re: Fire Alarm Power Supply Issues


How funny, my last name is Grisz. Thanks, but a NAC panel won't supply filtered 120volts to the AC input on the MS2. I've used many NAC panels, but the panel has a multi pin connector from the supply transformer and I believe it is 24VAC. That Wheelock NAC works off of dry contacts to supply a series of horns and strobes. It can be used as a 24VDC power supply too, but I really need a 120VAC constant filter.
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Old 04-28-2015, 07:44 PM   #4
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Re: Fire Alarm Power Supply Issues


You can't find a UPS to do this?
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Old 04-28-2015, 07:46 PM   #5
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Re: Fire Alarm Power Supply Issues


Tried that too,the UPS moves up and down with the input supply
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Old 04-28-2015, 07:55 PM   #6
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Re: Fire Alarm Power Supply Issues


Get a better UPS.
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Old 04-28-2015, 09:24 PM   #7
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Re: Fire Alarm Power Supply Issues


Sola transformer. If that doesn't do it, you have something else going on.

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