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Title: Arc fault detection system

Abstract

An arc fault detection system for use on ungrounded or high-resistance-grounded power distribution systems is provided which can be retrofitted outside electrical switchboard circuits having limited space constraints. The system includes a differential current relay that senses a current differential between current flowing from secondary windings located in a current transformer coupled to a power supply side of a switchboard, and a total current induced in secondary windings coupled to a load side of the switchboard. When such a current differential is experienced, a current travels through a operating coil of the differential current relay, which in turn opens an upstream circuit breaker located between the switchboard and a power supply to remove the supply of power to the switchboard. 1 fig.

Inventors:
Publication Date:
Research Org.:
Westinghouse Electric Corporation
Sponsoring Org.:
USDOE; USDOE, Washington, DC (United States)
OSTI Identifier:
6211604
Patent Number(s):
US 5905619; A
Application Number:
PPN: US 8-951026
Assignee:
Dept. of Energy, Washington, DC (United States) PNRO; EDB-99-078699
DOE Contract Number:  
AC11-93PN38195
Resource Type:
Patent
Resource Relation:
Patent File Date: 15 Oct 1997
Country of Publication:
United States
Language:
English
Subject:
24 POWER TRANSMISSION AND DISTRIBUTION; CIRCUIT BREAKERS; DESIGN; DETECTION; ELECTRIC ARCS; ELECTRICAL FAULTS; POWER DISTRIBUTION SYSTEMS; RETROFITTING; SWITCHING CIRCUITS; CURRENTS; ELECTRIC CURRENTS; ELECTRIC DISCHARGES; ELECTRICAL EQUIPMENT; ELECTRONIC CIRCUITS; EQUIPMENT; EQUIPMENT PROTECTION DEVICES; 240400* - Power Transmission & Distribution- Health & Safety- (1990-); 240200 - Power System Networks, Transmission & Distribution- (1990-)

Citation Formats

Jha, K.N. Arc fault detection system. United States: N. p., 1999. Web.
Jha, K.N. Arc fault detection system. United States.
Jha, K.N. Tue . "Arc fault detection system". United States.
@article{osti_6211604,
title = {Arc fault detection system},
author = {Jha, K.N.},
abstractNote = {An arc fault detection system for use on ungrounded or high-resistance-grounded power distribution systems is provided which can be retrofitted outside electrical switchboard circuits having limited space constraints. The system includes a differential current relay that senses a current differential between current flowing from secondary windings located in a current transformer coupled to a power supply side of a switchboard, and a total current induced in secondary windings coupled to a load side of the switchboard. When such a current differential is experienced, a current travels through a operating coil of the differential current relay, which in turn opens an upstream circuit breaker located between the switchboard and a power supply to remove the supply of power to the switchboard. 1 fig.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {5}
}