GB274325A - Improvements in and relating to oil break electric switches - Google Patents

Improvements in and relating to oil break electric switches

Info

Publication number
GB274325A
GB274325A GB2653526A GB2653526A GB274325A GB 274325 A GB274325 A GB 274325A GB 2653526 A GB2653526 A GB 2653526A GB 2653526 A GB2653526 A GB 2653526A GB 274325 A GB274325 A GB 274325A
Authority
GB
United Kingdom
Prior art keywords
oil
raised
plunger
air
relating
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
GB2653526A
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
Priority claimed from DEM93341D external-priority patent/DE447485C/en
Application filed by Individual filed Critical Individual
Priority to GB2653526A priority Critical patent/GB274325A/en
Publication of GB274325A publication Critical patent/GB274325A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/68—Liquid-break switches, e.g. oil-break

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)

Abstract

274,325. Magrini, L. Oct. 23, 1926. Addition to 266,290. Oil switches; cases. - In order to prevent the access of air to the casing of the switch described in the parent Specification the plunger 8 is made hollow and the interior communicates with h the atmosphere, small apertures 5<11> being formed near the bottom of the plunger so that normally it is filled with oil and acts as a solid piston when being raised quickly but on being raised slowly or left standing in the raised position the oil leaks through the aperture 5<11> and completely fills the reservoir 2. The outlet pipe 4<1> has an extension fitted with a non-return valve 16 so that air cannot enter the switch casing- even if a partial vacuum is formed therein, as for example by breaking the circuit quickly between contacts 5, 5<1> when little or no current is flowing therein, and no appreciable arcing occurs.
GB2653526A 1926-02-16 1926-10-23 Improvements in and relating to oil break electric switches Expired GB274325A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2653526A GB274325A (en) 1926-02-16 1926-10-23 Improvements in and relating to oil break electric switches

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEM93341D DE447485C (en) 1926-02-16 1926-02-16 Oil switch
GB2653526A GB274325A (en) 1926-02-16 1926-10-23 Improvements in and relating to oil break electric switches

Publications (1)

Publication Number Publication Date
GB274325A true GB274325A (en) 1927-07-21

Family

ID=25988202

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2653526A Expired GB274325A (en) 1926-02-16 1926-10-23 Improvements in and relating to oil break electric switches

Country Status (1)

Country Link
GB (1) GB274325A (en)

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