GB1158247A - Change of State Current Limiter having Flat Plate Construction. - Google Patents

Change of State Current Limiter having Flat Plate Construction.

Info

Publication number
GB1158247A
GB1158247A GB12598/68A GB1259868A GB1158247A GB 1158247 A GB1158247 A GB 1158247A GB 12598/68 A GB12598/68 A GB 12598/68A GB 1259868 A GB1259868 A GB 1259868A GB 1158247 A GB1158247 A GB 1158247A
Authority
GB
United Kingdom
Prior art keywords
mercury
metal
flat plate
liquid metal
change
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
GB12598/68A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB1158247A publication Critical patent/GB1158247A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H87/00—Protective devices in which a current flowing through a liquid or solid is interrupted by the evaporation of the liquid or by the melting and evaporation of the solid when the current becomes excessive, the circuit continuity being reestablished on cooling

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Fuses (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

1,158,247. Mercury and other conducting liquid switches. GENERAL ELECTRIC CO. 18 March, 1968 [19 April, 1967], No. 12598/68. Heading H1N. A change-of-state current limiter comprises a volume 60, Fig. 1, of liquid metal held under pressure between a pair of flat plates 15 with opposed mating grooves 42, Fig. 3, and having channels 19 for the liquid metal leading to reservoirs 64 containing resiliently loaded pistons 21 backed by neoprene rubber plugs 22 for taking up the increased volume when the metal vaporizes. The flat plate assembly 15 is lined with high density alumina 38 surrounding the liquid metal 60 and sealed by a neoprene washer 49 enclosed between a pair of fibreglass rings 17, 18 recessed in the assembly. Metallic headers 11, 12 containing the reservoirs 64 are clamped by bolts 13 having insulated sleeves 63, and washers 62 whereby the headers are electrically insulated from each other when the metal 60 vaporizes. Examples of suitable conducting liquid metals are mercury, gallium or indium or a mixture of mercury with 10 per cent or less of caesium, sodium, potassium or lithium. The arrangement is stated to be capable of sustaining an arc after a current surge of 50,000 amperes at 220 volts and reduces the flow to several hundred amperes and which may be interrupted by a normal circuit breaker.
GB12598/68A 1967-04-19 1968-03-15 Change of State Current Limiter having Flat Plate Construction. Expired GB1158247A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US632050A US3389360A (en) 1967-04-19 1967-04-19 Change of state current limiter having flat plate construction

Publications (1)

Publication Number Publication Date
GB1158247A true GB1158247A (en) 1969-07-16

Family

ID=24533872

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12598/68A Expired GB1158247A (en) 1967-04-19 1968-03-15 Change of State Current Limiter having Flat Plate Construction.

Country Status (4)

Country Link
US (1) US3389360A (en)
DE (1) DE1763146A1 (en)
FR (1) FR1564181A (en)
GB (1) GB1158247A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107507746A (en) * 2017-06-30 2017-12-22 西安交通大学 A kind of liquid metal current-limiting apparatus and method

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3902150A (en) * 1973-06-08 1975-08-26 Mitsubishi Electric Corp Self-restoring type current limiting device
US3873791A (en) * 1973-11-08 1975-03-25 Gen Electric Current limiting circuit breaker
DE19903837B4 (en) * 1999-02-01 2004-02-19 Moeller Gmbh Self-recovering current limiting device with liquid metal
DE19909558C1 (en) * 1999-03-05 2000-05-25 Moeller Gmbh Self-recovering current limiter with liquid metal has insulating bodies and intermediate walls forming upper, lower shells sealed together along surfaces at connecting channel central plane
DE19916324A1 (en) * 1999-04-12 2000-10-19 Moeller Gmbh Self-recovering current limiting device with liquid metal
DE19927065A1 (en) * 1999-06-15 2000-12-21 Moeller Gmbh Self-recovering current limiting device with liquid metal

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2732464A (en) * 1956-01-24 Electrical contacting devices
US2306728A (en) * 1939-02-20 1942-12-29 Edward S Evans Current controlling device
US2990464A (en) * 1958-04-21 1961-06-27 Bror A Otterstedt Liquid metal switch
NL241567A (en) * 1958-07-24
US3117203A (en) * 1960-05-17 1964-01-07 Gen Electric Circuit protective devices and circuits
US3218412A (en) * 1963-06-27 1965-11-16 Gen Electric High pressure current limiting device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107507746A (en) * 2017-06-30 2017-12-22 西安交通大学 A kind of liquid metal current-limiting apparatus and method
CN107507746B (en) * 2017-06-30 2018-12-04 西安交通大学 A kind of liquid metal current-limiting apparatus and method

Also Published As

Publication number Publication date
US3389360A (en) 1968-06-18
DE1763146A1 (en) 1971-09-23
FR1564181A (en) 1969-04-18

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees