Reactor switch arc-back limiting circuit
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United States of America Patent
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-
May 16, 1989
Issued Date -
N/A
app pub date -
Jul 14, 1987
filing date -
Nov 12, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
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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