Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1974-11-18
1976-05-25
Rolinec, R. V.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
324 28R, G01R 3102
Patent
active
039597229
ABSTRACT:
A test circuit for testing high voltage circuit breakers, the circuit being capable of providing a transient recovery voltage of a predetermined form to test the breaking capacity of circuit breakers. The test circuit comprises a first multi-parameter network for producing low frequency components of the transient recovery voltage, which network is constituted of a first inductance connected in series between a H.V. source and a circuit breaker, and of a capacitance-resistance unit connected to the output of the first inductance. A second multi-parameter network is provided for producing high frequency components of the transient recovery voltage. This second network is connected in series with the unit. The second network and the unit are connected across the terminals of the circuit breaker undergoing test.
REFERENCES:
patent: 2888639 (1959-05-01), Petermichl
patent: 3064183 (1962-11-01), Slamecka
patent: 3373350 (1968-03-01), Reece
patent: 3496300 (1970-02-01), Stokes
patent: 3515982 (1970-06-01), Longworth et al.
Institut de Recherches de l'Hydro-Quebec (IREQ)
Rolinec R. V.
Tokar Michael J.
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