Patent · US Expired

Device and method relating to protection of an object against over-currents comprising over-current reduction

US6226163A · kind A · utility

17Cited by

14References

46Claims

0Family size

Assignee

Asea Brown Boveri, S.A. · CH

Inventors

Hans Bernhoff
Mikael Bergkvist · Uppsala, SE
Mats Ekberg · Bissenkamp, SE
Jan Isberg
Mats Leijon · Västerås, SE
Li Ming · Visby, SE
Anders Sunesson
Dan Windmar · Vittinge, SE
Bertil Berggren · Västerås, SE

Key dates

Filing date	Mar 2, 1998
Grant date	May 1, 2001
Priority date	—
Expiry date	Mar 2, 2018

Classification

Technology area (CPC H)Electricity
CPC primaryH02K2203/15
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

This invention is related to a device and a method in an electric power plant for protection of an object (1) against over-currents from a network (3) or another equipment included in the high voltage plant, the device comprising a switching device (4) in a line (2) between the object and the network/equipment. The line (2) between the object and the network/equipment is connected to an arrangement (5) reducing over-currents towards the object (1), said arrangement (5) being actuatable for over-current reduction with the assistance of an over-current condition detecting arrangement (11-13) within a time period substantially less than the break-time of the switching device (4).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.