SE9603585D0 - Device for operating an electrical appliance - Google Patents

Device for operating an electrical appliance

Info

Publication number
SE9603585D0
SE9603585D0 SE9603585A SE9603585A SE9603585D0 SE 9603585 D0 SE9603585 D0 SE 9603585D0 SE 9603585 A SE9603585 A SE 9603585A SE 9603585 A SE9603585 A SE 9603585A SE 9603585 D0 SE9603585 D0 SE 9603585D0
Authority
SE
Sweden
Prior art keywords
switches
conduits
control
incorporated
controlled
Prior art date
Application number
SE9603585A
Other languages
Swedish (sv)
Other versions
SE9603585L (en
Inventor
Per Liss
Torbjoern Staabi
Krister Nyberg
Hans Bjoerklund
Original Assignee
Asea Brown Boveri
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 Asea Brown Boveri filed Critical Asea Brown Boveri
Priority to SE9603585A priority Critical patent/SE9603585L/en
Publication of SE9603585D0 publication Critical patent/SE9603585D0/en
Publication of SE9603585L publication Critical patent/SE9603585L/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current

Landscapes

  • Keying Circuit Devices (AREA)

Abstract

Two switches (5,6) are provided, one in each conduit, and are controllable for breaking/maintaining a connection between the poles and the apparatus sides. The arrangement is such that the apparatus is only controlled when both breakers are controlled at the same time. - A device (10-19) is incorporated in permanent connection with the conduits which makes possible control, with the switches open, as to whether some break has occurred on the conduits between the voltage source and the apparatus. It can also control the function of both switches to close and open without causing control of the apparatus and detect an earth fault occurring on the conduits between the switches and the apparatus. Also incorporated is a by-pass conduit (10,11) parallel-coupled with the switches. It includes devices (18,19) which react to a current through it and a voltage bridge (14) connecting both conduits between the switches and the voltage source. This bridge has three series-coupled resistances (15-17) and two level comparators (18,19).
SE9603585A 1996-10-01 1996-10-01 Device for operating an electrical appliance SE9603585L (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE9603585A SE9603585L (en) 1996-10-01 1996-10-01 Device for operating an electrical appliance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9603585A SE9603585L (en) 1996-10-01 1996-10-01 Device for operating an electrical appliance

Publications (2)

Publication Number Publication Date
SE9603585D0 true SE9603585D0 (en) 1996-10-01
SE9603585L SE9603585L (en) 1998-04-02

Family

ID=20404093

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9603585A SE9603585L (en) 1996-10-01 1996-10-01 Device for operating an electrical appliance

Country Status (1)

Country Link
SE (1) SE9603585L (en)

Also Published As

Publication number Publication date
SE9603585L (en) 1998-04-02

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Legal Events

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