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:
- Issue Date:
- Research Org.:
- Westinghouse Electric Corporation
- Sponsoring Org.:
- USDOE; USDOE, Washington, DC (United States)
- OSTI Identifier:
- 6211604
- Patent Number(s):
- 5905619
- Application Number:
- PPN: US 8-951026
- Assignee:
- Dept. of Energy, Washington, DC (United States)
- 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 = {Tue May 18 00:00:00 EDT 1999},
month = {Tue May 18 00:00:00 EDT 1999}
}