Hydraulic control system for electric circuit-breaker

Details Hydraulic control system for electric circuit-breaker Hydraulic control system for electric circuit-breaker

H - Electricity

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306/208

H01H 71/10 (2006.01) H01H 33/34 (2006.01) H01H 35/38 (2006.01)

Patent

CA 1123031

Abstract of the Disclosure The closure and trip pilot valves of a circuit- breaker control unit are actuated by a hyraulic device controlled by a pressure drop which appears in control lines in response to the transient opening of a drain electrovalve within a control cubicle. Thus the pressure- drop hydraulic signal transmitted from a single central control cubicle for closing or tripping a circuit-breaker dispenses with the need for any electrical system and permits the control of a plurality of circuit-breakers or breaker modules solely by means of small-section lines providing hydraulic connections between the central control cubicle and each breaker control unit.

319025

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