GB353228A - Improvements in and relating to methods of and means for limiting short-circuit currents - Google Patents

Improvements in and relating to methods of and means for limiting short-circuit currents

Info

Publication number
GB353228A
GB353228A GB20635/30A GB2063530A GB353228A GB 353228 A GB353228 A GB 353228A GB 20635/30 A GB20635/30 A GB 20635/30A GB 2063530 A GB2063530 A GB 2063530A GB 353228 A GB353228 A GB 353228A
Authority
GB
United Kingdom
Prior art keywords
contacts
circuit
july
relating
methods
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
GB20635/30A
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.)
BBC Brown Boveri AG Switzerland
BBC Brown Boveri France SA
Original Assignee
BBC Brown Boveri AG Switzerland
BBC Brown Boveri France SA
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 BBC Brown Boveri AG Switzerland, BBC Brown Boveri France SA filed Critical BBC Brown Boveri AG Switzerland
Publication of GB353228A publication Critical patent/GB353228A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H77/00—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
    • H01H77/02—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism
    • H01H77/10—Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting in which the excess current itself provides the energy for opening the contacts, and having a separate reset mechanism with electrodynamic opening

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)

Abstract

353,228. Electromagnetic switches. AKT.-GES. BROWN, BOVERI, ET CIE, Baden, Switzerland. July 8, 1930, No. 20635. Convention date, July 15, 1929. [Class 38 (v).] Contacts.-A circuit breaker for limiting shortcircuit currents comprises two axially - movable cooperating contacts in the form of oppositely - wound coaxial helices f, g normally in abutting contact under the action of adjustable helical springs c, d surrounding them. With heavy short-circuit currents the contacts repel one another, breaking the circuit and introducing into the circuit the iron resistance n which serves as a current limiter. When separated, the contacts are held apart by wedge-friction or by means of a pawl which hold the switch open until it is released by hand.
GB20635/30A 1929-07-15 1930-07-08 Improvements in and relating to methods of and means for limiting short-circuit currents Expired GB353228A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE353228X 1929-07-15

Publications (1)

Publication Number Publication Date
GB353228A true GB353228A (en) 1931-07-23

Family

ID=6280570

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20635/30A Expired GB353228A (en) 1929-07-15 1930-07-08 Improvements in and relating to methods of and means for limiting short-circuit currents

Country Status (2)

Country Link
FR (1) FR698808A (en)
GB (1) GB353228A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009035299A1 (en) * 2009-07-30 2011-02-03 Siemens Aktiengesellschaft Arrangement for interrupting current flow in e.g. limiter, has contact pieces with coils wound such that current is guided through coils during flow of current to move pieces from one position into another position based on force
EP3889986A1 (en) * 2020-03-30 2021-10-06 Siemens Aktiengesellschaft Electromechanical compact protective switching device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009035299A1 (en) * 2009-07-30 2011-02-03 Siemens Aktiengesellschaft Arrangement for interrupting current flow in e.g. limiter, has contact pieces with coils wound such that current is guided through coils during flow of current to move pieces from one position into another position based on force
DE102009035299B4 (en) * 2009-07-30 2013-02-14 Siemens Aktiengesellschaft Contact system and switching device
EP3889986A1 (en) * 2020-03-30 2021-10-06 Siemens Aktiengesellschaft Electromechanical compact protective switching device

Also Published As

Publication number Publication date
FR698808A (en) 1931-02-05

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