SE9802202L - Protective device - Google Patents

Protective device

Info

Publication number
SE9802202L
SE9802202L SE9802202A SE9802202A SE9802202L SE 9802202 L SE9802202 L SE 9802202L SE 9802202 A SE9802202 A SE 9802202A SE 9802202 A SE9802202 A SE 9802202A SE 9802202 L SE9802202 L SE 9802202L
Authority
SE
Sweden
Prior art keywords
over
arrangement
line
electric switch
network
Prior art date
Application number
SE9802202A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE9802202D0 (en
Inventor
Per Skytt
Mats Ekberg
Hans Bernhoff
Jan Isberg
Original Assignee
Abb Ab
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 Abb Ab filed Critical Abb Ab
Priority to SE9802202A priority Critical patent/SE9802202L/en
Publication of SE9802202D0 publication Critical patent/SE9802202D0/en
Priority to AU48129/99A priority patent/AU4812999A/en
Priority to PCT/SE1999/001043 priority patent/WO2000001050A1/en
Publication of SE9802202L publication Critical patent/SE9802202L/en

Links

Classifications

    • 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
    • H02H3/02—Details
    • H02H3/025—Disconnection after limiting, e.g. when limiting is not sufficient or for facilitating 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
    • H02H3/02—Details
    • H02H3/021—Details concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order
    • H02H3/023—Details concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order by short-circuiting

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Protection Of Static Devices (AREA)

Abstract

This invention is related to a device for protecting, in an electric power plant, an object (1) against over-currents from a network (3) or another equipment comprised in the high voltage plant, the device comprising a first electric switch (4) in a line (2) between the object and the network/equipment. The line (2) between the object and the first electric switch (4) is connected to an arrangement (5) reducing over-currents towards the object (1). This arrangement is activatable for over-current reduction with the assistance of an arrangement (11-13) detecting over-current conditions within a time period substantially shorter than the breaking time of the first electric switch (4). A second electric switch (27) is arranged in the line between the object (1) and the connection of the over-current reducing arrangement (5) to the line (2).
SE9802202A 1998-06-18 1998-06-18 Protective device SE9802202L (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE9802202A SE9802202L (en) 1998-06-18 1998-06-18 Protective device
AU48129/99A AU4812999A (en) 1998-06-18 1999-06-17 A device for protecting an object against fault related over-currents
PCT/SE1999/001043 WO2000001050A1 (en) 1998-06-18 1999-06-17 A device for protecting an object against fault related over-currents

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9802202A SE9802202L (en) 1998-06-18 1998-06-18 Protective device

Publications (2)

Publication Number Publication Date
SE9802202D0 SE9802202D0 (en) 1998-06-18
SE9802202L true SE9802202L (en) 2000-02-21

Family

ID=20411780

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9802202A SE9802202L (en) 1998-06-18 1998-06-18 Protective device

Country Status (3)

Country Link
AU (1) AU4812999A (en)
SE (1) SE9802202L (en)
WO (1) WO2000001050A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3660721A (en) * 1971-02-01 1972-05-02 Gen Electric Protective equipment for an alternating current power distribution system
US4184186A (en) * 1977-09-06 1980-01-15 General Electric Company Current limiting device for an electric power system
DE3787798D1 (en) * 1987-03-06 1993-11-18 Groh Heinrich Arrangement for electrical power supply lines to protect against explosions of gas and / or dust-air mixtures, preferably for underground operations.
US4978893A (en) * 1988-09-27 1990-12-18 The United States Of American As Epresented By The United States The Department Of Energy Laser-triggered vacuum switch

Also Published As

Publication number Publication date
WO2000001050A1 (en) 2000-01-06
SE9802202D0 (en) 1998-06-18
AU4812999A (en) 2000-01-17

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Legal Events

Date Code Title Description
NAV Patent application has lapsed