GB453585A - Improvements in and relating to devices for protecting multiple phase alternating current installations against earth faults - Google Patents

Improvements in and relating to devices for protecting multiple phase alternating current installations against earth faults

Info

Publication number
GB453585A
GB453585A GB3522134A GB3522134A GB453585A GB 453585 A GB453585 A GB 453585A GB 3522134 A GB3522134 A GB 3522134A GB 3522134 A GB3522134 A GB 3522134A GB 453585 A GB453585 A GB 453585A
Authority
GB
United Kingdom
Prior art keywords
relating
devices
alternating current
phase alternating
earth
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
GB3522134A
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.)
Siemens Schuckertwerke AG
Siemens AG
Original Assignee
Siemens Schuckertwerke AG
Siemens 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 Siemens Schuckertwerke AG, Siemens AG filed Critical Siemens Schuckertwerke AG
Priority to GB3522134A priority Critical patent/GB453585A/en
Publication of GB453585A publication Critical patent/GB453585A/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
    • H02H3/16—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

  • Emergency Protection Circuit Devices (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Abstract

453,585. Protective cut-out arrangements. SIEMENS - SCHUCKERTWERKE AKT.-GES., Siemensstadt, Berlin. Dec. 7, 1934, No. 35221. Void [Abridged as open to inspection under Sect. 91 of the Acts, May 16, 1936]. [Class 38 (v)] An earth-fault current coil 4 is connected to earth 5 and to an artificial neutral 2 formed by equal resistances 3, the ohmic value of each of which is greater than that of the coil 4. An earth on one of the lines 1 produces a resultant potential at 2, whereby a switch 7 opens the circuit 6 of a relay or holding coil, and also operates a visual or acoustic indicator.
GB3522134A 1934-12-07 1934-12-07 Improvements in and relating to devices for protecting multiple phase alternating current installations against earth faults Expired GB453585A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3522134A GB453585A (en) 1934-12-07 1934-12-07 Improvements in and relating to devices for protecting multiple phase alternating current installations against earth faults

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3522134A GB453585A (en) 1934-12-07 1934-12-07 Improvements in and relating to devices for protecting multiple phase alternating current installations against earth faults

Publications (1)

Publication Number Publication Date
GB453585A true GB453585A (en) 1936-05-16

Family

ID=10375244

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3522134A Expired GB453585A (en) 1934-12-07 1934-12-07 Improvements in and relating to devices for protecting multiple phase alternating current installations against earth faults

Country Status (1)

Country Link
GB (1) GB453585A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2883610A (en) * 1955-10-26 1959-04-21 Westinghouse Electric Corp Generator protective systems
US4099215A (en) * 1975-01-31 1978-07-04 Jean Parrier Security apparatus for the protection of electric machines
GB2117196A (en) * 1982-03-03 1983-10-05 Ronald Charles Adey Detecting faults in a multi phase AC supply

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2883610A (en) * 1955-10-26 1959-04-21 Westinghouse Electric Corp Generator protective systems
US4099215A (en) * 1975-01-31 1978-07-04 Jean Parrier Security apparatus for the protection of electric machines
GB2117196A (en) * 1982-03-03 1983-10-05 Ronald Charles Adey Detecting faults in a multi phase AC supply

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