Coordinated electric surge suppressor with means for suppressing oscillatory transient overvoltages
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United States of America Patent
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Mar 14, 1995
Grant Date -
N/A
app pub date -
Mar 9, 1992
filing date -
Mar 9, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A protective device for electric loads coupled to power circuits, such as the ac power lines inside buildings, has a surge suppressor including a nonlinear surge-protective device in shunt with a resistor-capacitor damping network. This suppressor circuit is well coordinated with a suitable arrester connected to the power lines, for example at the point of entry of ac supply mains into the building. The arrester has a lower voltage protection level than the surge suppressor. This suppressor circuit limits transient voltages at the load and also damps the oscillatory surges that occur in a power connection as described.
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