GB575396A - Improvements in oil-immersed electrical switch-gear - Google Patents

Improvements in oil-immersed electrical switch-gear

Info

Publication number
GB575396A
GB575396A GB480744A GB480744A GB575396A GB 575396 A GB575396 A GB 575396A GB 480744 A GB480744 A GB 480744A GB 480744 A GB480744 A GB 480744A GB 575396 A GB575396 A GB 575396A
Authority
GB
United Kingdom
Prior art keywords
oil
contacts
immersed
carbon
insulators
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
GB480744A
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.)
CHARLES HERBERT NUNN
General Electric Co PLC
Original Assignee
CHARLES HERBERT NUNN
General Electric Co PLC
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 CHARLES HERBERT NUNN, General Electric Co PLC filed Critical CHARLES HERBERT NUNN
Priority to GB480744A priority Critical patent/GB575396A/en
Publication of GB575396A publication Critical patent/GB575396A/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
    • H01H33/02—Details
    • H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • H01H33/55—Oil reservoirs or tanks; Lowering means therefor

Landscapes

  • Circuit Breakers (AREA)

Abstract

575,396. Oil-break switches. GENERAL ELECTRIC CO., Ltd., and NUNN, C. H. March 15, 1944, No. 4807. [Class 38 (v)] In oil-immersed electrical switchgear a baffle is immersed in the oil above the contacts to collect fluid projected upwards by the arc to prevent its passing immediately through the oil to the insulators immersed in it and there depositing newly-generated carbon. Such carbon is stated to be " active " and readily attracted to surfaces of insulators with resulting deleterious action, while carbon which has had time to lose its active property does not so readily deposit. In an on-load tap-changing switch the baffle is a tube 30 fixed by a cross bar 32 to a frame 14 carrying conductors 10, 11 in bushings 12, 13, having a diameter approximately one-third of the distance between the centres of the conductors 10, 11 and extending from just above the contacts 16, 17 to shortly below the surface of the oil. Contacts 16, 17 are resiliently mounted on pivoted rockets 18, 19 moved respectively by links 29, 28 when a lever 27 is rocked by movement of an actuating rod 25 with an insulating portion 26. Connection is made to the contacts 16, 17 by flexible conducting strips 23, 24.
GB480744A 1944-03-15 1944-03-15 Improvements in oil-immersed electrical switch-gear Expired GB575396A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB480744A GB575396A (en) 1944-03-15 1944-03-15 Improvements in oil-immersed electrical switch-gear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB480744A GB575396A (en) 1944-03-15 1944-03-15 Improvements in oil-immersed electrical switch-gear

Publications (1)

Publication Number Publication Date
GB575396A true GB575396A (en) 1946-02-15

Family

ID=9784179

Family Applications (1)

Application Number Title Priority Date Filing Date
GB480744A Expired GB575396A (en) 1944-03-15 1944-03-15 Improvements in oil-immersed electrical switch-gear

Country Status (1)

Country Link
GB (1) GB575396A (en)

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