GB284630A - Improvements in and relating to safety devices for electrical apparatus - Google Patents

Improvements in and relating to safety devices for electrical apparatus

Info

Publication number
GB284630A
GB284630A GB3185/28A GB318528A GB284630A GB 284630 A GB284630 A GB 284630A GB 3185/28 A GB3185/28 A GB 3185/28A GB 318528 A GB318528 A GB 318528A GB 284630 A GB284630 A GB 284630A
Authority
GB
United Kingdom
Prior art keywords
tube
gas
photo
indicator
intensity
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
GB3185/28A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB284630A publication Critical patent/GB284630A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection

Landscapes

  • Optical Measuring Cells (AREA)

Abstract

284,630. British Thomson-Houston Co., Ltd., (Assignees of Belt, T. A. E.). Feb. 1, 1927, [Convention date]. Light radiations, actuating apparatus by.-In order to protect oilimmersed transformers and other electrical apparatus in the event of internal faults, the gas evolved on fault escapes through a tube 23, Fig. 2, into a transparent receptacle 26 containing a curved glass partition 27. The evolved gas forms under the partition as a plano-convex lens and disperses the rays from a light source so that the intensity on a photo-electriccell, connected with an indicator is reduced. The Specification as open to inspection under Sect. 91 (3) (a) describes also an arrangement wherein the evolveld gas displaces oil in a tube 10, Fig. 1 (Cancelled), and the resulting difference in the intensity of the beam, through the tube, on the photo-electric cell operates the indicator. this subject matter does not appear in the Specification as accepted.
GB3185/28A 1927-02-01 1928-02-01 Improvements in and relating to safety devices for electrical apparatus Expired GB284630A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US284630XA 1927-02-01 1927-02-01

Publications (1)

Publication Number Publication Date
GB284630A true GB284630A (en) 1929-03-28

Family

ID=21843580

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3185/28A Expired GB284630A (en) 1927-02-01 1928-02-01 Improvements in and relating to safety devices for electrical apparatus

Country Status (1)

Country Link
GB (1) GB284630A (en)

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