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
IT1110058B IT19231/79A IT1923179A IT1110058B IT 1110058 B IT1110058 B IT 1110058B IT 19231/79 A IT19231/79 A IT 19231/79A IT 1923179 A IT1923179 A IT 1923179A IT 1110058 B IT1110058 B IT 1110058B
Authority
IT
Italy
Prior art keywords
protection
high impedance
relay apparatus
against high
plants against
Prior art date
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.)
Filing date
Publication date
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of IT7919231A0 publication Critical patent/IT7919231A0/en
Application granted granted Critical
Publication of IT1110058B publication Critical patent/IT1110058B/en

Links

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 (7)

* 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

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

Also Published As

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

Similar Documents

Publication Publication Date Title
IT1111790B (en) PROCEDURE AND DEVICE TO REMOVE HEAT FROM AT LEAST ONE HALF CIRCULATING HEAT VECTOR
RO84359A2 (en) EQUIPMENT FOR ELECTROSTATIC PULVERIZATION
IT1166705B (en) PERFECTED CALCULATION EQUIPMENT
IT1121003B (en) EQUIPMENT FOR THE TREATMENT OF RESIDUES
GB2019503A (en) Turbine cooling system
JPS5543282A (en) Enclosure for turbine engine
IT1097107B (en) PROCEDURE AND EQUIPMENT FOR WORKING THROUGH
AU506316B1 (en) Turbine driven pipe inspection equipment
IT7869013A0 (en) EQUIPMENT FOR THE NUMERICAL MEASUREMENT OF POSITIONS
IT1146883B (en) REACTIVE VOLTAMPERE GENERATOR DEVICE (VAR) FOR ELECTRICAL SYSTEMS
DK235278A (en) SPRAYER FOR CLEANING APPLIANCES PLANT PROTECTION APPLIANCES OR SIMILAR
IT1131097B (en) PEDINATION EQUIPMENT IN COMMUNICATION PLANTS
IT1125623B (en) PROTECTION RELAY
FI790279A (en) ADAPTER FOR ENCLOSURE STROEMS
IT7803532A0 (en) PERFECT EQUIPMENT FOR THE FORMATION AND OVERWRAPPING OF GROUPS OF PRODUCTS
IT1110058B (en) RELAY APPARATUS FOR THE PROTECTION OF ELECTRICITY PLANTS AGAINST HIGH IMPEDANCE FAULTS
BE886658A (en) VANE GRILLE FOR TURBINE
IT1100282B (en) PAINT COMPOSITIONS AND PROCEDURE FOR THEIR PREPARATION
IT1132455B (en) METHOD FOR ELECTRICITY ACCUMULATION
IT1125624B (en) PROTECTION RELAY
IT7948572A0 (en) PROCEDURE AND EQUIPMENT FOR RECYCLING EFFLUENTS FROM PLANTS FOR THE MANUFACTURE OF CE MENTO-ASBESTOS PRODUCTS
DK313779A (en) SPRAYING ORGANIZATION FOR CLEANING APPLIANCES PLANT PROTECTION DEVICES OR SIMILAR
FR2478196B1 (en) AMORTIZATION OF TURBOMACHINE BLADES
IT7869578A0 (en) DIFFERENTIAL PROTECTION FOR ELECTRICAL SYSTEMS COMPONENTS
IT1078001B (en) PRODUCTS FOR THE PROTECTION OF PLANTS