CH614569A5 - Switching device for protecting an electrical apparatus - Google Patents

Switching device for protecting an electrical apparatus

Info

Publication number
CH614569A5
CH614569A5 CH123177A CH123177A CH614569A5 CH 614569 A5 CH614569 A5 CH 614569A5 CH 123177 A CH123177 A CH 123177A CH 123177 A CH123177 A CH 123177A CH 614569 A5 CH614569 A5 CH 614569A5
Authority
CH
Switzerland
Prior art keywords
protecting
switching device
electrical apparatus
electrical
switching
Prior art date
Application number
CH123177A
Inventor
Joerg Dipl Ing Strobl
Original Assignee
Elin Union Ag
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 Elin Union Ag filed Critical Elin Union Ag
Publication of CH614569A5 publication Critical patent/CH614569A5/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
    • H02H3/38—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 both voltage and current; responsive to phase angle between voltage and current
    • H02H3/382—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 both voltage and current; responsive to phase angle between voltage and current involving phase comparison between current and voltage or between values derived from current and voltage
CH123177A 1976-02-06 1977-02-02 Switching device for protecting an electrical apparatus CH614569A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT81776A AT360610B (en) 1976-02-06 1976-02-06 ELECTRICAL PROTECTIVE DEVICE

Publications (1)

Publication Number Publication Date
CH614569A5 true CH614569A5 (en) 1979-11-30

Family

ID=3500420

Family Applications (1)

Application Number Title Priority Date Filing Date
CH123177A CH614569A5 (en) 1976-02-06 1977-02-02 Switching device for protecting an electrical apparatus

Country Status (3)

Country Link
AT (1) AT360610B (en)
CH (1) CH614569A5 (en)
DE (1) DE2704762A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2907857C2 (en) * 1979-02-28 1985-01-10 Siemens AG, 1000 Berlin und 8000 München Circuit arrangement for determining the reactance of a power transmission line in the event of a short circuit
AT380592B (en) * 1981-09-17 1986-06-10 Elin Union Ag PROTECTIVE RELAY FOR ELECTRICAL MACHINES
US4589073A (en) * 1982-05-05 1986-05-13 Dorman Smith Switchgear Limited Apparatus for determining prospective short circuit current
US6744393B2 (en) * 2001-12-21 2004-06-01 Schneider Automation Inc. Low cost multi-range input circuit for industrial analog input modules

Also Published As

Publication number Publication date
AT360610B (en) 1981-01-26
DE2704762A1 (en) 1977-08-11
ATA81776A (en) 1980-06-15

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Legal Events

Date Code Title Description
PL Patent ceased