Voltage Regulator - what do I need?
Posted 09 November 2007 - 11:16 PM
I figure I need some sort of voltage regulator before the UPS, but I'm not sure what. Can someone advise me what such a thing looks like and how much it might cost?
Or should I just go and buy an APC power supply? Would this be better?
By the way our rated power supply here is 220V.
Posted 10 November 2007 - 08:03 AM
In short it sounds like your UPS is being bombarded by large voltage spikes. Spikes like these will often take out a UPS's surge protection circuitry and then get passed along to sensitive electronics. We had a similar problem in remote areas with some of our systems. We ended up placing an industrial grade power conditioner in front of the UPS's.
BTW, just as a side note, most small UPSs will only hold a computer up for around 15-30 minutes depending upon what you have plugged into it. They're typically just made for short term use to do an orderly shutdown.
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Posted 11 November 2007 - 01:38 AM
They should be easy to come by in Bangkok, every computer in every office has on here.
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Posted 11 November 2007 - 07:01 PM
of course - with a few power hungry peripherals plugged-in - when voltage drops too low then the onboard batteries in a UPS can't charge and when the power cuts, so does the UPS with it..... ergh......
another option is to have separate dedicated UPS's for each piece of hardware...
otherwise, head for the approx 100USD type transformer. Big solid boxes, aproximately 30cmx30cmx30xcm weighing in at approx 15+ kilos!
the cheaper options are generally wee little plug-boards (Scuba-SI's one seems to not be included, as he says he got a big box....sounds like a bargain!) with built in surge protection but they're pretty-much designed for the more reliable electricity networks of countries that have a more developed infrastructure....
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Posted 11 November 2007 - 08:22 PM
Next time I'm in Phuket Town I'll have a look for what's available.
2 seasons ago a knackered generator on the dive boat put 1000V through all my chargers/power supplies during the night. That was fun.
Posted 13 November 2007 - 02:49 AM
In the manual for my Enermax Liberty power supply it says "...please use Sine Wave type UPS. This PSU is not compatible with Simulate Sine Wave type UPS".
My older computer, on a similar Thai-built UPS, does not crash when the power cuts, and I can't find anything about the UPS type in the manual for the power supply (Enermax EG365P-VE).
Anyone know if these typical Thai-built UPSs are "sine wave" or "simulate sine wave"? And does anyone know what type the APC UPSs are?
Posted 05 February 2008 - 09:53 PM
Posted 08 February 2008 - 07:48 AM
TrippLite makes the best Line Conditioners although I don't reccomend their UPS products which seem to be pretty bad.
All the best, James