Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific current responsive fault sensor
Reexamination Certificate
2011-07-19
2011-07-19
Salce, Patrick (Department: 2836)
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific current responsive fault sensor
C361S042000, C361S093100
Reexamination Certificate
active
07983014
ABSTRACT:
The disconnector of the present invention comprises: a current transformer that detects a current flowing through electric wires; a rectifying part that rectifies the current outputted from the current transformer; a charging part that charges the current outputted from the rectifying part; a switching part that disconnects the electric wires upon driving; and a trigger part that drives the switching part when the charge stored in the charging part becomes a predetermined drive area. In this regard, the drive area is set larger than the charge that can be stored in the charging part by a lightning surge current. The disconnector of the present invention and the overvoltage protectors may be combined to constitute the overvoltage protection device.
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Nakajima, Hiroichi, “How to Select and Use Breakers and Switchgears,” Ohmsha (2005), Chapter 6, pp. 116-121.
Extended European Search Report issued Oct. 5, 2010 for corresponding European patent application No. 07 790 873.9.
Kijima Hitoshi
Shibayama Masao
Kijima Hitoshi
Lathrop David N.
Salce Patrick
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