Methods of improving the lightning immunity for an SSPC...

Details Methods of improving the lightning immunity for an SSPC... Methods of improving the lightning immunity for an SSPC...

2009-01-08

2011-11-15

Fureman, Jared (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

Reexamination Certificate

active

08059378

ABSTRACT:
A solid state power controller (SSPC) often contains electronic circuitry which could be damaged or upset by the excessive transient voltages induced by the lightning and SSPC could result in undesirable (or nuisance) trips due to lightning strikes. The present invention is intended to address the “nuisance trip” issue, by relying on the lightning indicative signals to distinguish between the transient current surge due to the lightning strike and that due to the circuit fault in the power distribution channel. The present invention utilizes either the break-down current in a transient voltage suppression (TVS) device, or a voltage signal at the output of the SSPC as the indication of lightning strike, to avoid nuisance trips.

REFERENCES:
patent: 4093978 (1978-06-01), Plumer
patent: 2006/0164780 (2006-07-01), Lark
patent: 2007/0014066 (2007-01-01), Ye
patent: 2008/0019070 (2008-01-01), Kilroy et al.
patent: 2008/0106152 (2008-05-01), Maier
patent: 2008/0129113 (2008-06-01), Robertson et al.

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