Search results for query: *

The 500Amp staticon charger has an input iso-tx that is about 20kVA right? The inrush from an iso-tx is from 10 to 16 times nominal (so about 500-600A). The UPS practically has a short circuit on the output during transformer energisation. The Static switch SCRs will fire on a quarter cycle...

I've been servicing Powerware equipment since 1988. Startups, repairs you name it... THe BladeUPS is a relatively new product in North America (on the market for about 18months now)and I can't say there have been many issues with this particular model as of yet. There is definitely an alarm...

I have an application for residential contractor (higher end $$ homes), who has 'soft' powerline issues. Specifically, the inrush power requirements for the air-conditioners (feeding off a 120/240V 40 amp breaker) are causing visible power dips (ie brownouts) to all circuits in the house. Do...

tt, I had a similar result with a 5kVA ferro UPS feeding a 1.5 kVA on line UPS. I was told that tank circuit (ie capacitors that run the ferro xformer at full saturation) cause the output of the ferro xformer to resonate when it's supplying an inductive load (ie on-line UPS). This causes the...

Is there any information on how to size an online UPS to support HID lighting loads? HID - passive type ballasts can have inrush currents of up to 30 time the nominal current for 5-10 msec. In my particular case I have a 347/600 3phase distribution panel feeding 39 HID lights (400 watt each)...