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.
- Inventors:
-
- Bethel Park, PA
- Issue Date:
- Research Org.:
- Westinghouse Electric Corp., Pittsburgh, PA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 872294
- Patent Number(s):
- 5905619
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H02 - GENERATION H02H - EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- DOE Contract Number:
- AC11-93PN38195
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- fault; detection; ungrounded; high-resistance-grounded; power; distribution; systems; provided; retrofitted; outside; electrical; switchboard; circuits; limited; space; constraints; differential; current; relay; senses; flowing; secondary; windings; located; transformer; coupled; supply; total; induced; load; experienced; travels; operating; coil; upstream; circuit; breaker; remove; secondary windings; secondary winding; current induced; current transformer; power supply; circuit breaker; current flow; current flowing; fault detection; power distribution; electrical switch; space constraints; total current; differential current; distribution systems; limited space; /361/
Citation Formats
Jha, Kamal N. Arc fault detection system. United States: N. p., 1999.
Web.
Jha, Kamal N. Arc fault detection system. United States.
Jha, Kamal N. Fri .
"Arc fault detection system". United States. https://www.osti.gov/servlets/purl/872294.
@article{osti_872294,
title = {Arc fault detection system},
author = {Jha, Kamal 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1999},
month = {Fri Jan 01 00:00:00 EST 1999}
}