Well pumps and SWs revisited [RE-wrenches]

[Eric Smiley]

Ray Walters said:
***
NO one has mentioned in this thread that the SW5548 is terrible at
surges.
I've been disappointed that it trips its over current switch when a
lowly
DR2424 can hang in there.
***

It's true the SW5548 doesn't surge as well as the 4kVA SW units. I
believe it's been discussed in the past on this list. The reason I was
given is that the 5.5 kVA unit was intended for more sensitive loads and
doesn't allow the voltage to sag as much as the smaller units when
starting large motor loads. Thus better power quality means less surge
ability.

Eric Smiley, BEng, MASc
Project Leader
Photovoltaic Energy Applied Research, Technology Centre
British Columbia Institute of Technology

NE25 - 3700 Willingdon Avenue
Burnaby, British Columbia
Canada V5G 3H2

phone: 604.432.8657    fax: 604.436.0286
esmiley at bcit.ca             www.tc.bcit.ca

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