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paul__b

Anyone know what the regs are with regards emergency backup power for AOV panels?

Can AOV panels be battery backup only to drive the AOV in a fire situation or is a standby generator required in the event of mains failure?

Any cheaper solutions to a standby generator?


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Aov panel must supply 72 hour standby battery power....this sound alot but unlike a fire alarm panel it doesn`t have much standby current,
 
Aov panel must supply 72 hour standby battery power....this sound alot but unlike a fire alarm panel it doesn`t have much standby current,
Do you mean each panel must have its own battery backup similar to a fire alarm panel?

I am looking to get rid of the backup generator feeding the AOV panels and feed these through an alternative less costly way if possible

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The AOVs will be opened by 24v actuators. I'm not sure exactly what each actuator pulls but I'm guessing 0.5 amps. There is about 60 AOVs spread across 5 different AOV panels so it would be about 30 amps total or 6 amps per panel. That's if my maths is correct.

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The AOVs will be opened by 24v actuators. I'm not sure exactly what each actuator pulls but I'm guessing 0.5 amps. There is about 60 AOVs spread across 5 different AOV panels so it would be about 30 amps total or 6 amps per panel. That's if my maths is correct.

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Rather than guessing you'd be better off actually confirming the current demand.
 
ok 0.45 A @ 24v is standard opening so yes they could be on battery only, most standard panels are 10 zone & 10 actuator outputs with 2 x 12v 7a/h batteries. Panels can also be linked together or zoned off fire alarm panels.
 
I've just seen this.
Don't forget the principle of an AOV is to maintain the stack effect, to aid in the venting of smoke.
If all actuators were to open, the system wouldn't work effectively.
It's likely that only one or two floors will open at a time.
I've not ever had to design for a secondary power supply to an AOV panel. I've done it lots of times for a motorised smoke shaft system.
 

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