Reactor switch arc-back limiting circuit

Details Reactor switch arc-back limiting circuit Reactor switch arc-back limiting circuit

1987-07-14

1989-05-16

Paschall, M. H.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Transient responsive

361 91, H02H 320

Patent

active

048314870

ABSTRACT:
A reactor switch has a switching point which is arranged between a high-voltage reactor and a high-voltage line. When this switch is being switched off, the occurrence of arc-back oscillations with excessively high rate voltage changes is avoided in a simple and reliable manner. This is achieved in that the switching point is connected in parallel with a voltage-dependent resistor. This resistor, which preferably contains a metal oxide such as zinc oxide, has a current/voltage characteristic which limits the recurring voltage across the switching point in such a manner that the skewing rate of the voltage of a high-frequency arc-back oscillation occurring during an arc-back of the switching point always remains below a predetermined value.

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