GB1248408A - Circuit arrangement for the protection of electrical apparatus - Google Patents

Circuit arrangement for the protection of electrical apparatus

Info

Publication number
GB1248408A
GB1248408A GB5369768A GB5369768A GB1248408A GB 1248408 A GB1248408 A GB 1248408A GB 5369768 A GB5369768 A GB 5369768A GB 5369768 A GB5369768 A GB 5369768A GB 1248408 A GB1248408 A GB 1248408A
Authority
GB
United Kingdom
Prior art keywords
contacts
winding
protection
circuit arrangement
electrical apparatus
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
GB5369768A
Inventor
Gabor Dani
Istvan Szabo
Gyorgy Szell
Geza Anda
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.)
VILLAMOS BERENDEZES ES KESZULEK MUVEK
Original Assignee
VILLAMOS BERENDEZES ES KESZULEK MUVEK
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 VILLAMOS BERENDEZES ES KESZULEK MUVEK filed Critical VILLAMOS BERENDEZES ES KESZULEK MUVEK
Publication of GB1248408A publication Critical patent/GB1248408A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
    • H02H7/0852—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load directly responsive to abnormal temperature by using a temperature sensor
    • 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
    • H02H3/347—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 using summation current transformers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Protection Of Generators And Motors (AREA)
  • Motor And Converter Starters (AREA)
  • Control Of Ac Motors In General (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)

Abstract

1,248,408. Magnetic switches. VILLAMOS BERENDEZES ES KESZULEK MUVEK. 12 Nov., 1968 [14 Nov., 1967], No. 53697/68. Addition to 1,115,963. Heading H1N. [Also in Division H2] A protective arrangement (see Division H2) has a sealed magnetic reed relay 30 with contacts 45 which are closed by a permanent magnet 31 when a button 32 is pressed. The contacts are then maintained closed by a normally energized winding 35 when the magnet 31 is restored to its initial position by a spring 33 on the release of the button 32. The contacts 45 open when either the energization of the winding 35 is reduced, or an opposing winding 25 is energized.
GB5369768A 1967-11-14 1968-11-12 Circuit arrangement for the protection of electrical apparatus Expired GB1248408A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HUDA000241 1967-11-14

Publications (1)

Publication Number Publication Date
GB1248408A true GB1248408A (en) 1971-10-06

Family

ID=10994866

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5369768A Expired GB1248408A (en) 1967-11-14 1968-11-12 Circuit arrangement for the protection of electrical apparatus

Country Status (3)

Country Link
AT (1) AT304683B (en)
FR (1) FR96088E (en)
GB (1) GB1248408A (en)

Also Published As

Publication number Publication date
DE1809496A1 (en) 1969-08-07
FR96088E (en) 1972-05-19
AT304683B (en) 1973-01-25
DE1809496B2 (en) 1976-01-29

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