GB111968A - Improvements in Electric Current Interrupters. - Google Patents

Improvements in Electric Current Interrupters.

Info

Publication number
GB111968A
GB111968A GB525417A GB525417A GB111968A GB 111968 A GB111968 A GB 111968A GB 525417 A GB525417 A GB 525417A GB 525417 A GB525417 A GB 525417A GB 111968 A GB111968 A GB 111968A
Authority
GB
United Kingdom
Prior art keywords
mercury
chamber
central chamber
filled
channel
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
GB525417A
Inventor
Knut Trosdahl
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB111968A publication Critical patent/GB111968A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H29/00—Switches having at least one liquid contact
    • H01H29/28—Switches having at least one liquid contact with level of surface of contact liquid displaced by fluid pressure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/14—Electrothermal mechanisms

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Thermally Actuated Switches (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

111,968. Trosdahl, K. April 13, 1917. Mercury switches; thermal switches. - A current - limiter consists of a porcelain casing having three chambers 4, 5, 6 connected at the bottom by a channel 3 filled with mercury, a resistance wire 9 in the circuit to be controlled being placed in the central chamber. On excessive current, the expansion of the gas in this chamber forces the mercury away from the centre of the channel and breaks the continuity of the circuit normally closed by the mercury between the leads 3, 11. Oil 7 is placed on the mercury in the central chamber, but may be dispensed with if the chamber is filled with nitrogen. The volume of the central chamber is equal to the sum of the volumes of the two side chambers. An adjustable shunt is provided for the resistance wire.
GB525417A 1916-04-22 1917-04-13 Improvements in Electric Current Interrupters. Expired GB111968A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO485108X 1916-04-22

Publications (1)

Publication Number Publication Date
GB111968A true GB111968A (en) 1917-12-20

Family

ID=32245451

Family Applications (1)

Application Number Title Priority Date Filing Date
GB525417A Expired GB111968A (en) 1916-04-22 1917-04-13 Improvements in Electric Current Interrupters.

Country Status (3)

Country Link
DE (1) DE312051C (en)
FR (1) FR485108A (en)
GB (1) GB111968A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4183817B2 (en) * 1998-12-30 2008-11-19 アジレント・テクノロジーズ・インク Electrical contact switchgear
WO2000041198A1 (en) * 1998-12-30 2000-07-13 Agilent Technologies, Inc. Electrical contact breaker switch, integrated electrical contact breaker switch, and electrical contact switching method
US6323447B1 (en) 1998-12-30 2001-11-27 Agilent Technologies, Inc. Electrical contact breaker switch, integrated electrical contact breaker switch, and electrical contact switching method
US6894237B2 (en) * 2003-04-14 2005-05-17 Agilent Technologies, Inc. Formation of signal paths to increase maximum signal-carrying frequency of a fluid-based switch
WO2005006368A1 (en) * 2003-07-10 2005-01-20 Abb Research Ltd Method and device for power braking with a fluid-operated liquid metal current switch

Also Published As

Publication number Publication date
DE312051C (en)
FR485108A (en) 1917-12-13

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