Overvoltage protection for high voltage shunt capacitor banks

Details Overvoltage protection for high voltage shunt capacitor banks Overvoltage protection for high voltage shunt capacitor banks

1974-12-10

1976-08-03

Moose, Harry

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

317 31, 317137, 317DIG5, 324127, H02H 716

Patent

active

039731693

ABSTRACT:
An integral shunt capacitor bank connected between high voltage AC terminals and comprising a plurality of serially-connected groups of paralleled capacitors is provided with a dual level overvoltage detection circuit between the paralleling buses defining each capacitor group. Each dual level detection circuit includes a voltage measuring impedance providing a low variable voltage proportional to the voltage to be measured and a pair of voltage responsive circuits across the measuring impedance. The voltage responsive circuits comprising each such pair are responsive to different overvoltage levels and include oppositely poled blocking rectifiers.

REFERENCES:
patent: 1483552 (1924-02-01), Packard
patent: 2888613 (1959-05-01), Cuttino
patent: 2931950 (1960-04-01), Minder
patent: 2933652 (1960-04-01), Cuttino
patent: 2942153 (1960-06-01), Schultz et al.
patent: 3080506 (1963-03-01), Minder
patent: 3188526 (1965-06-01), Engel

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