IT1110058B - RELAY APPARATUS FOR THE PROTECTION OF ELECTRICITY PLANTS AGAINST HIGH IMPEDANCE FAULTS - Google Patents

RELAY APPARATUS FOR THE PROTECTION OF ELECTRICITY PLANTS AGAINST HIGH IMPEDANCE FAULTS

Info

Publication number: IT1110058B
Authority: IT; Italy
Prior art keywords: protection; high impedance; relay apparatus; against high; plants against
Prior art date: 1978-01-12

Application number

IT19231/79A

Other languages

Italian (it)

Other versions

IT7919231A0 (en

Original Assignee

Westinghouse Electric Corp

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1978-01-12

Filing date

1979-01-12

Publication date

1985-12-23

1979-01-12 Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp

1979-01-12 Publication of IT7919231A0 publication Critical patent/IT7919231A0/en

1985-12-23 Application granted granted Critical

1985-12-23 Publication of IT1110058B publication Critical patent/IT1110058B/en

Classifications

- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/30—Staggered disconnection
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/40—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to ratio of voltage and current
- H02H3/402—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to ratio of voltage and current using homopolar quantities

IT19231/79A 1978-01-12 1979-01-12 RELAY APPARATUS FOR THE PROTECTION OF ELECTRICITY PLANTS AGAINST HIGH IMPEDANCE FAULTS IT1110058B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US86878978A	1978-01-12	1978-01-12

Publications (2)

Publication Number	Publication Date
IT7919231A0 IT7919231A0 (en)	1979-01-12
IT1110058B true IT1110058B (en)	1985-12-23

Family

ID=25352322

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
IT19231/79A IT1110058B (en)	1978-01-12	1979-01-12	RELAY APPARATUS FOR THE PROTECTION OF ELECTRICITY PLANTS AGAINST HIGH IMPEDANCE FAULTS

Country Status (10)

Country	Link
JP (1)	JPS5497748A (en)
BR (1)	BR7900098A (en)
DE (1)	DE2900654A1 (en)
ES (1)	ES476633A1 (en)
FR (1)	FR2414810A1 (en)
GB (1)	GB2012505B (en)
IT (1)	IT1110058B (en)
MX (1)	MX145530A (en)
SE (1)	SE436237B (en)
ZA (1)	ZA79137B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS63179736U (en) *	1987-05-14	1988-11-21
SE459059B (en) *	1987-09-16	1989-05-29	Asea Ab	PROTECT FOR HIGH-RESISTANT EARTH ERRORS
DE4439499C2 (en) *	1994-10-27	1998-01-29	Siemens Ag	Method for detecting an earth short on an electrical power transmission line
US6453248B1 (en) *	1998-07-21	2002-09-17	Abb Inc.	High impedance fault detection
AU755700B2 (en) *	1999-11-29	2002-12-19	Canon Kabushiki Kaisha	Power generation system, and method for installing the same
ES2323994B1 (en) *	2006-10-25	2010-05-13	Universidad Del Pais Vasco-Euskal Herriko Unibertsitatea	ELECTRICAL LINE PROTECTION SYSTEM TO DETERMINE THE SENSE IN WHICH A FAILURE IS PRODUCED.
FI126892B (en) *	2016-05-23	2017-07-31	Emtele Oy	Felströmindikator
FR3162942A1 (en) *	2024-06-04	2025-12-05	Schneider Electric Industries Sas	Protection circuit of a three-phase electrical power supply system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3539866A (en) *	1967-10-11	1970-11-10	Federal Pacific Electric Co	Multi-zone fault protection systems

1979
- 1979-01-08 ES ES476633A patent/ES476633A1/en not_active Expired
- 1979-01-09 BR BR7900098A patent/BR7900098A/en unknown
- 1979-01-10 GB GB79866A patent/GB2012505B/en not_active Expired
- 1979-01-10 DE DE19792900654 patent/DE2900654A1/en not_active Withdrawn
- 1979-01-10 MX MX176245A patent/MX145530A/en unknown
- 1979-01-11 JP JP106879A patent/JPS5497748A/en active Pending
- 1979-01-11 SE SE7900254A patent/SE436237B/en unknown
- 1979-01-12 ZA ZA00790137A patent/ZA79137B/en unknown
- 1979-01-12 IT IT19231/79A patent/IT1110058B/en active
- 1979-01-12 FR FR7900814A patent/FR2414810A1/en active Pending

Also Published As

Publication number	Publication date
SE7900254L (en)	1979-09-14
BR7900098A (en)	1979-08-07
IT7919231A0 (en)	1979-01-12
GB2012505B (en)	1982-04-28
GB2012505A (en)	1979-07-25
ZA79137B (en)	1979-12-27
DE2900654A1 (en)	1979-07-19
ES476633A1 (en)	1979-12-01
FR2414810A1 (en)	1979-08-10
JPS5497748A (en)	1979-08-02
SE436237B (en)	1984-11-19
MX145530A (en)	1982-03-02

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