Modular closing resistor

Details Modular closing resistor Modular closing resistor

H - Electricity

01

H

H01H 33/04 (2006.01) H01H 33/16 (2006.01)

Patent

CA 2114108

A modular closing resistor assembly (20) can be added in line with the interrupter assemblies (16) of an extra high voltage circuit breaker and has a relatively short length. The resistor element consists of two stacks (70, 71) of disks which are disposed side by side and are electrically connected such that the alternate disks (72, 73, 74) of each stack are connected in series with one another. The operating mechanism of the unit includes a linearly moving roller (120) which engages a crank arm (110) which is in turn pivotally connected to op- erate the movable closing resistor contact (52) with a motion and with a variable mechanical advantage adapted to cause the resistor contacts (52) to close a high speed just after the interrupter contacts close and to open after the interrupter contacts open.

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