Re: re-introducing a Religious discussion: UPS's and Line Conditioners.

Perhaps you should check out the new APC UPSs at CompUSA with AVR (automatic
voltage regulation) built-in. Picked a few up for about $99 a peice.

- Beau

On Friday 17 December 2004 02:24, Christopher E. Brown wrote:
> On Wed, 1 Dec 2004, Thomison, Lee wrote:
> > Hey folks,
> >
> > What's the current dogma on line conditioners (not the mov surge
> > suppressor kind, but the big soft iron transformers and coils and lots
> > of passive elements kind) and UPSes (both the big ones, and the
> > 'desk-side' APC's and tripplites).
> >
> > 1. If you have a UPS, does it inherently include line conditioning?
> > Or, do you need a line conditioner along with the UPS?
> >
> > 2. If yes, does the line conditioner go before or after the UPS?
>
> 1) No, not common models.
>
> 2) Neither
>
>
> Common UPS systems *do not* clean up power in any real way. If it goes to
> high/low, freq is off/etc they cut to internal power.
>
> That being said, high end UPSes do have a ferro-resonant multi-tap
> transformers, they can stabilize voltage and do basic stepup and stepdown
> without transfering to internal power.
>
> The smallest I can think of would be say an APC RM1400-XL (1.2Kw, takes
> external aux batt packs, normally fitted with a management card than can
> tell you all the temps voltages and freqs/etc).
>
> These types can be *very* useful when a remote site does something like
> cut over to an overloaded genset that is only providing 105VAC, instead of
> cutting to internal power somewhere around 115VAC they just change
> transformer taps to step up to ~ 125VAC.
>
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Received on Fri Dec 17 12:01:50 2004