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This topic comprises 2 pages: 1 2
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Author
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Topic: UPS for Projector Electronics
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Tony Bandiera Jr
Film God
Posts: 3067
From: Moreland Idaho
Registered: Apr 2004
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posted 07-03-2010 05:20 PM
quote: Mike Blakesley Not booth-related, but we had a big storm through here 2 weeks ago and when power came back on, it killed the UPS's not only in my theatre and store, but also killed 5 of them in the hardware store across the street. What's weird is, several computers at the store which were NOT plugged into UPSs were not harmed.
The UPS' have surge protection circuitry which took the hit and sacrificed themselves, which is probably a factor in saving the other gear.
But be forewarned that the other gear which seems unharmed now probably took enough of a hit that the next surge WILL do them in. Seen it happen many times.
quote: Tony Ratcliff A power blink knocked everything out - including the Sanyo. The APC started squealing, but didn't go to battery. ( They say they will signal when the battery is bad, but it doesn't ).
But in the middle of the show the APC starts squealing and shuts off.
The APC failed/alarmed/shut down for no apparent reason.
I've come into the office and found APCs my PCs are on alarming out this same way. But this is the first time I was right next to it when it happened.
That is why I am looking for a GOOD power backup solution for my Sanyo and DVD player.
The squealing "for no apparent reason" with the APC means that it took and absorbed that hit (which saved your Sanyo) but it is now damaged and needs to be repaired. That is why it shut down again.
ANY UPS brand that alarms when you don't have an obvious blink or outage means that either it took a surge that compromised it, or there is some other fault with the circuitry.
I have lost faith with APC due to the poor quality of late.
A caution: For video projectors, older cinema processors (pre- CP500/650/750) or any devices with motors or standard power transformers, DO NOT use a UPS unless it has "True sine-wave" output!! Use of a standard UPS (most of which use a "stepped sine-wave output) can damage the device connected, the UPS or both.
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