On Sat, 27 Aug 2005 00:42:47 +0100, Jason Arthurs wrote:
Due to our flakey local power supply I'm quite au fait with setting up
UPS units for computers. However my wife is setting up a tropical
aquarium and would like a similar level of protection for her fish.
Total equipment load is miniscule compared to computer equipment.
75W Heater
18W Flourescent tube
6W Filter pump
5W Air pump
----------------------
104W TOTAL
I'm assuming the power factor of the heater will be similar to an
incandescent bulb i.e. approaching unity (1) but the pumps are
presumably inductive mechanisms so would I be looking at 0.75 or
worse? Flourescent tubes would normally have a PF of 0.85-0.9.
Ideally I'd like at least a couple of hours backup since we rarely
have outages long than this, what sort of VA rating should I be
looking for?
Regards,
Jason.
I lived in a rural area where electricity was dodgy.
During power cuts I just chucked an old duvet over the tank.
Cheap and never lost a fish.
--
Jim
Tyneside UK
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