GB447342A - Improvements in or relating to testing devices for leakage current coils - Google Patents

Improvements in or relating to testing devices for leakage current coils

Info

Publication number
GB447342A
GB447342A GB3365434A GB3365434A GB447342A GB 447342 A GB447342 A GB 447342A GB 3365434 A GB3365434 A GB 3365434A GB 3365434 A GB3365434 A GB 3365434A GB 447342 A GB447342 A GB 447342A
Authority
GB
United Kingdom
Prior art keywords
housing
earth
circuit
coil
spring
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB3365434A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schiele & Bruchsaler Ind
Original Assignee
Schiele & Bruchsaler Ind
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
Priority to NL40897D priority Critical patent/NL40897C/xx
Application filed by Schiele & Bruchsaler Ind filed Critical Schiele & Bruchsaler Ind
Priority to GB3365434A priority patent/GB447342A/en
Publication of GB447342A publication Critical patent/GB447342A/en
Expired legal-status Critical Current

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
    • H02H3/14—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 occurrence of voltage on parts normally at earth potential
    • 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
    • H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
    • H01H83/04—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents with testing means for indicating the ability of the switch or relay to function properly
    • 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
    • H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
    • H02H3/044—Checking correct functioning of protective arrangements, e.g. by simulating a fault
    • 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
    • H02H3/16—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 fault current to earth, frame or mass
    • H02H3/162—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 fault current to earth, frame or mass for AC systems
    • H02H3/165—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 fault current to earth, frame or mass for AC systems for three-phase systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)
  • Breakers (AREA)
GB3365434A 1934-11-23 1934-11-23 Improvements in or relating to testing devices for leakage current coils Expired GB447342A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NL40897D NL40897C (enrdf_load_stackoverflow) 1934-11-23
GB3365434A GB447342A (en) 1934-11-23 1934-11-23 Improvements in or relating to testing devices for leakage current coils

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3365434A GB447342A (en) 1934-11-23 1934-11-23 Improvements in or relating to testing devices for leakage current coils

Publications (1)

Publication Number Publication Date
GB447342A true GB447342A (en) 1936-05-18

Family

ID=10355703

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3365434A Expired GB447342A (en) 1934-11-23 1934-11-23 Improvements in or relating to testing devices for leakage current coils

Country Status (2)

Country Link
GB (1) GB447342A (enrdf_load_stackoverflow)
NL (1) NL40897C (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
NL40897C (enrdf_load_stackoverflow)

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