Method and apparatus for evaluating the condition of a gapless m

Details Method and apparatus for evaluating the condition of a gapless m Method and apparatus for evaluating the condition of a gapless m

1987-09-16

1989-02-07

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

324 72, G01R 3102

Patent

active

048034363

ABSTRACT:
For evaluating the condition of a first lightning arrester of the gapless metal-oxide varistor type that is connected across the high voltage winding of a transformer, I connect externally of the transformer a second arrester of the same type, but with means for selectively changing its breakdown voltage between a first value that is higher than the normal breakdown voltage of the first arrester and a second value that is lower than said normal breakdown voltage. Pulses are applied to the low voltage winding of the transformer while the second arrester has its breakdown voltage set at the first value and while said breakdown voltage is set at said second value. By determining whether or not the second arrester conducts in response to each of these pulses, it can be established whether the first arrester is then undamaged, damaged in a shorted mode, or damaged in an open mode.

REFERENCES:
patent: 4577148 (1986-03-01), Sweetana
patent: 4621298 (1986-11-01), McMillen
Article Entitled "Zinc-Oxide and the Distribution System" Appearing in the Magazine Electric Forum, vol. 11, No. 1, 1985, pp. 22-28, Published by General Electric Company, Fairfield, CT.

Affiliated with

Also associated with

Rating

Method and apparatus for evaluating the condition of a gapless m does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for evaluating the condition of a gapless m, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for evaluating the condition of a gapless m will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1086676