Page 153 - Uninterruptible Power Supplies

Static Uninterruptible Power Supplies
Static Uninterruptible Power Supplies 151

CURRENT WAVEFORM OF A TYPICAL MINI-COMPUTER

Volt
4.9 A.

20

15

10

5

0

–5

–10

–15

–20

4.9 A.
0 5 10 15 Time
Conversion Factor = 0.245 Amp/Volt (mSec)
Averaged Read Out = 0.79 Amp
Nameplate Required = 2.7 Amp

4.9
Crest Factor = = 6.2
0.79
Figure 5.10

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