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Rack mount UPS ???


robritchie

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APC again! Also look on ebay there are always lots there. In all cases check battery life on standby (years) and hold up time under the load you need. Get a bigger one if the times are not enough for your needs. You may need to cancel all the bleeps associated with the various functions.
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Never used ACP rack stuff, but we (day job) gave up on the "regular" stuff - they just don't last. We use these: http://www.toshiba.com/ind/product_display...1=14&id2=22 The only down sides are:

 

Expensive

Rack units have very deep chassis

Heavy!

Batteries are not field replaceable - they have to go back to Toshiba.

No voltage selection - are 120V I/O only or 230V I/O only.

 

Upsides are:

 

Much more reliable than APC

Are "On Line" type - no switching transients or delay

Clean sine wave output

Stable output frequency - selectable 60Hz or 50Hz (suitable for use on Hammonds!)

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If you're buying a second hand one, be prepared to replace the batteries - they have a lifetime of around 4-5 years. You might get lucky and find a good one, but then again you might not.

 

Most units will be designed for an IT environment where they are powered-on 24x7, and rarely discharged. If you're using it in a touring environment where they're not connected 24x7, the performance may bear little resemblance to the published spec.

 

And as someone said above - remember they're very heavy. They'll need to go in the bottom of racks, and be supported front and back.

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Also remember that the batteries used in UPS tend to have a life in the order of single figures of hard cycles! A full discharge to flat will eat up in the order of a quarter of the battery performance life.

 

In a touring rack situation leaving the UPS ON as it is trucked from job to job will kill the batteries and they might take 24hours to recharge as far as they will.

 

A concurrent post has been automatically merged from this point on.

 

What is there to save if all the show goes down, that cannot be saved to disc while programming

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What is there to save if all the show goes down, that cannot be saved to disc while programming

 

Here's a start.

 

The comm system so you can talk to each other as you try to fix the problem.

 

The reboot time of all the digital gear that won't have to reboot if it's on a UPS. The amps power right up, the digital console not so much.

 

Any eq, fx, or dynamics changes you have made as a regular part of running a show since your last save.

 

Any speakers that might not like the huge bang when the console powers off before the PS capacitors in the amps have drained.

 

The nerves of the operator.

 

Mac

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