-----Original Message-----
From: Michel Jullian
I don't understand why it is absolutely impossible, is the load's power
factor
unity i.e. is it purely resistive? If the load's power factor is equal
to 0.8
which is typical of computer power supplies, the dudes are right I am
afraid.
<><><><><><>
The UPS IGBT switches are not designed for a sustained 167 A output.
It's a game the manufacturer's play. Almost everyone makes a 15 kW UPS
which they *used* to call a 17 kVA (nominal) UPS assuming a 0.9 PF.
Then one day another manufacturer advertized the same UPS as a 20 kVA
(nominal) and in small print at the bottom he stated that he assumed
0.8 PF.
Careful of any spec which says "nominal", BTW. :-)
Terry
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