What uninterruptible power supply to install?

V

Vladimir Pindurov2013-02-08 04:58:53

Batteries

Vladimir Pindurov, 2013-02-08 04:58:53

There is a wall cabinet with a depth of 450 mm, in it:
Cisco SG500-52 - 2 pcs. (36 watts)
Cisco SG500-28P - 1 pc. (180 watts)
Which uninterruptible power supply should I install?

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7 answer(s)

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LightFalcon, 2013-02-08
@LightFalcon

The dimensions of the UPS for your cabinet should not exceed 350mm in depth, otherwise the power connectors will have to be bent at an unthinkable angle or use special power connectors bent 90 degrees. A cursory search yielded the following result .
As for the battery life from the UPS, the approximate calculation is presented below.
T=E*U/P(h)
E- battery capacity (Ah)
U- battery voltage (V)
P- UPS load power (W)
The total consumption is 216 watts, which corresponds to 0.98 amperes per 220 volt network.
Thus, an ordinary battery with a capacity of 8A \ h 12v will power your cabinet for 8 * 12 / 216 = 0.44 hours.
PS: The UPS itself has APC companies, mainly due to the fact that almost any store in our city has batteries for them.

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