phasr loss not detected
phasr loss not detected
(OP)
Ona recent call to check out a band saw. I checked the wire nuts in the 1900 box and found only sinle phase 220 v .With a store full of customers and numerous computers controlers etc,I used the Blow -Breaker test to isolate the specific breaker. Having notified onlookers that I was about to make a spark. Flash - PoP and retreated to the breaker pannel room. A glance at the panel and I knew which 3 phse Sqare D to reset . As my hand reached up- suddenly - all the lights in the neighborhood went dead NO POWER FROM THE MAINS.
I then find out that LIPA has been working for 3 hours. They had moved from one xformer pole to the next apparently unable to get a grip on the problem. After a 10 minute reset lipa reenergized and everything became A-OK .
QUESTION.Is it possible that the 3rd phase for a node was being auto generated (from running 3 phse motors) could my purposfull triping of a 30 amp breaker finally trigger the "Missing Phase Detector"Did the line team realize this "Auto-Generation"
Scenario.Was LIPA "missing phase detector" defective ?
I then find out that LIPA has been working for 3 hours. They had moved from one xformer pole to the next apparently unable to get a grip on the problem. After a 10 minute reset lipa reenergized and everything became A-OK .
QUESTION.Is it possible that the 3rd phase for a node was being auto generated (from running 3 phse motors) could my purposfull triping of a 30 amp breaker finally trigger the "Missing Phase Detector"Did the line team realize this "Auto-Generation"
Scenario.Was LIPA "missing phase detector" defective ?






RE: phasr loss not detected
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