GB525510A - Improvements in or relating to electromagnetic circuit-breakers and the like - Google Patents

Improvements in or relating to electromagnetic circuit-breakers and the like

Info

Publication number
GB525510A
GB525510A GB597839A GB597839A GB525510A GB 525510 A GB525510 A GB 525510A GB 597839 A GB597839 A GB 597839A GB 597839 A GB597839 A GB 597839A GB 525510 A GB525510 A GB 525510A
Authority
GB
United Kingdom
Prior art keywords
switch
coil
coils
circuit
whipp
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
GB597839A
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.)
Whipp and Bourne Ltd
Original Assignee
Whipp and Bourne 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 Whipp and Bourne Ltd filed Critical Whipp and Bourne Ltd
Priority to GB597839A priority Critical patent/GB525510A/en
Publication of GB525510A publication Critical patent/GB525510A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
    • H01H47/04—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for holding armature in attracted position, e.g. when initial energising circuit is interrupted; for maintaining armature in attracted position, e.g. with reduced energising current
    • H01H47/06—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for holding armature in attracted position, e.g. when initial energising circuit is interrupted; for maintaining armature in attracted position, e.g. with reduced energising current by changing number of serially-connected turns or windings

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Structure Of Telephone Exchanges (AREA)
  • Keying Circuit Devices (AREA)

Abstract

525,510. Electromagnetic switches. WHIPP & BOURNE, Ltd., and WHIPP, F. Feb. 23, 1939, No. 5978. [Class 38 (v)] A " no-volt circuit-breaker has two coils 23, 24, one coil 24 of low resistance serving to close the switch while the coil 23 of higher resistance is short-circuited, and the coil 23 serving to maintain the switch closed either by itself or, as shown, in conjunction with the coil 24. On moving a switch 12 into engagement with the negative line 11 a circuit is completed to the coil 24 causing closure of the main contacts 13 and auxiliary contacts 14 and the moving of a change-over switch 15. The switch 12 is now opened and the final result is a maintaining circuit through coils 23, 24 and economy resistances 21, 22. Should an overload occur, an overload switch closes contacts 20 which shortcircuit the coils 23, 24 and release the switch which moves into its original position. Specification 214,667, [Class 38 (v)], is referred to.
GB597839A 1939-02-23 1939-02-23 Improvements in or relating to electromagnetic circuit-breakers and the like Expired GB525510A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB597839A GB525510A (en) 1939-02-23 1939-02-23 Improvements in or relating to electromagnetic circuit-breakers and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB597839A GB525510A (en) 1939-02-23 1939-02-23 Improvements in or relating to electromagnetic circuit-breakers and the like

Publications (1)

Publication Number Publication Date
GB525510A true GB525510A (en) 1940-08-29

Family

ID=9806155

Family Applications (1)

Application Number Title Priority Date Filing Date
GB597839A Expired GB525510A (en) 1939-02-23 1939-02-23 Improvements in or relating to electromagnetic circuit-breakers and the like

Country Status (1)

Country Link
GB (1) GB525510A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2198885A (en) * 1986-11-26 1988-06-22 Toshiba Kk A relay
GB2302988A (en) * 1995-06-29 1997-02-05 Defond Mfg Ltd Circuit breaker

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2198885A (en) * 1986-11-26 1988-06-22 Toshiba Kk A relay
GB2198885B (en) * 1986-11-26 1990-09-05 Toshiba Kk Cooking apparatus using relays
US5040089A (en) * 1986-11-26 1991-08-13 Kabushiki Kaisha Toshiba D.C. relay with power reducing function
GB2302988A (en) * 1995-06-29 1997-02-05 Defond Mfg Ltd Circuit breaker
GB2302988B (en) * 1995-06-29 1997-07-09 Defond Mfg Ltd Circuit breaker
US5815363A (en) * 1995-06-29 1998-09-29 Defond Manufacturing Limited Circuit breaker

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