GB923310A - Improvements in and relating to gas blast polyphase circuit breakers - Google Patents

Improvements in and relating to gas blast polyphase circuit breakers

Info

Publication number
GB923310A
GB923310A GB3091758A GB3091758A GB923310A GB 923310 A GB923310 A GB 923310A GB 3091758 A GB3091758 A GB 3091758A GB 3091758 A GB3091758 A GB 3091758A GB 923310 A GB923310 A GB 923310A
Authority
GB
United Kingdom
Prior art keywords
blast
thyratron
phase
control
relay
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
GB3091758A
Inventor
Albert Roxburgh
Albert Leigh
Jerrold Joseph Fellerman
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.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries Ltd
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 Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB3091758A priority Critical patent/GB923310A/en
Publication of GB923310A publication Critical patent/GB923310A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
    • H01H9/56—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere for ensuring operation of the switch at a predetermined point in the ac cycle
    • H01H9/563—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere for ensuring operation of the switch at a predetermined point in the ac cycle for multipolar switches, e.g. different timing for different phases, selecting phase with first zero-crossing

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Electrical Variables (AREA)

Abstract

923,310. Gas-blast circuit-breakers. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Aug. 27, 1959 [Sept. 26, 1958; Nov. 10, 1958], Nos. 30917/58 and 36051/58. Class 38 (5). A control arrangement for a polyphase gas-blast circuit-breaker comprises a manual switch T.C. effective to render operable a discharge device 1 which under the control of the voltage or current in a phase causes the opening of a blast valve associated with that phase, means being provided to effect the opening of the other blast valves with successive time delays so that the phases are interrupted successively at the corresponding instant of the A.C. cycle in the respective phases. In Fig. 1, a thyratron 1 becomes conductive when the switch T.C. is closed and the voltage applied to its grid 10 from a current or voltage transformer 22 reaches a value sufficient for the thyratron to fire. This energizes a relay 7 to cause the opening of the blast valve (not shown) associated with the same phase as the transformer 22. The successive operation of the other blast valves may be effected by providing a similar arrangement of transformer, thyratron and relay for each other phase as shown. Alternatively, the relay 7 in addition to controlling the associated blast valve may also control time-delay relays which control the blast valves associated with the other phases, Fig. 2 (not shown). An ignition may be used in place of the, or each, thyratron.
GB3091758A 1958-09-26 1958-09-26 Improvements in and relating to gas blast polyphase circuit breakers Expired GB923310A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3091758A GB923310A (en) 1958-09-26 1958-09-26 Improvements in and relating to gas blast polyphase circuit breakers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3091758A GB923310A (en) 1958-09-26 1958-09-26 Improvements in and relating to gas blast polyphase circuit breakers

Publications (1)

Publication Number Publication Date
GB923310A true GB923310A (en) 1963-04-10

Family

ID=10315099

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3091758A Expired GB923310A (en) 1958-09-26 1958-09-26 Improvements in and relating to gas blast polyphase circuit breakers

Country Status (1)

Country Link
GB (1) GB923310A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2854092A1 (en) * 1977-12-14 1979-06-28 Hazemeijer Bv SWITCHING METHOD FOR A THREE-PHASE HIGH VOLTAGE SWITCHING
DE3833166A1 (en) * 1988-09-27 1990-03-29 Siemens Ag Method for operating a power switch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2854092A1 (en) * 1977-12-14 1979-06-28 Hazemeijer Bv SWITCHING METHOD FOR A THREE-PHASE HIGH VOLTAGE SWITCHING
DE3833166A1 (en) * 1988-09-27 1990-03-29 Siemens Ag Method for operating a power switch

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