CH247327A - Appareil-relais électrique. - Google Patents

Appareil-relais électrique.

Info

Publication number
CH247327A
CH247327A CH247327DA CH247327A CH 247327 A CH247327 A CH 247327A CH 247327D A CH247327D A CH 247327DA CH 247327 A CH247327 A CH 247327A
Authority
CH
Switzerland
Prior art keywords
relay device
electrical relay
electrical
relay
Prior art date
Application number
Other languages
English (en)
Inventor
Limited Edmundsons Corporation
Original Assignee
Edmundsons Electricity Corp Li
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 Edmundsons Electricity Corp Li filed Critical Edmundsons Electricity Corp Li
Publication of CH247327A publication Critical patent/CH247327A/fr

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
    • H02H3/26—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/34—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 difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
    • H01H83/142—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection with bimetal elements
CH247327D 1944-05-08 1945-05-08 Appareil-relais électrique. CH247327A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB868844A GB577092A (en) 1944-05-08 1944-05-08 Improvements in electric cut-out or protective apparatus suitable for polyphase circuits

Publications (1)

Publication Number Publication Date
CH247327A true CH247327A (fr) 1947-02-28

Family

ID=9857323

Family Applications (1)

Application Number Title Priority Date Filing Date
CH247327D CH247327A (fr) 1944-05-08 1945-05-08 Appareil-relais électrique.

Country Status (3)

Country Link
CH (1) CH247327A (fr)
DE (1) DE856759C (fr)
GB (1) GB577092A (fr)

Also Published As

Publication number Publication date
DE856759C (de) 1952-11-24
GB577092A (en) 1946-05-03

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