GB987639A - Means for reducing the noise generated by electrical transformers - Google Patents

Means for reducing the noise generated by electrical transformers

Info

Publication number
GB987639A
GB987639A GB331962A GB331962A GB987639A GB 987639 A GB987639 A GB 987639A GB 331962 A GB331962 A GB 331962A GB 331962 A GB331962 A GB 331962A GB 987639 A GB987639 A GB 987639A
Authority
GB
United Kingdom
Prior art keywords
core
gas
barrier
transformer
cellular body
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
GB331962A
Inventor
David Lilley Turner
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.)
Brush Electrical Engineering Co Ltd
Original Assignee
Brush Electrical Engineering 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 Brush Electrical Engineering Co Ltd filed Critical Brush Electrical Engineering Co Ltd
Priority to GB331962A priority Critical patent/GB987639A/en
Publication of GB987639A publication Critical patent/GB987639A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Insulating Of Coils (AREA)

Abstract

987,639. Transformers. BRUSH ELECTRICAL ENGINEERING CO. Ltd. March 25, 1963 [Jan. 29, 1962], No. 3319/62. Heading H1T. The noise produced by a transformer core may be reduced by a thin " pneumatic " barrier positioned around the core such that, in the locality of the limbs, it passes between the core and the windings. The barrier has a low density compared with that of the liquid in which the transformer is immersed, since it comprises either a rigid casing, a flexible membrane formed into a closed bag, or a cellular body, filled with a selected gas, the walls being impermeable in each case. In the latter case, the cellular body is formed from a soft framed plastic, the cells of which are mainly non-interconnecting, and has imperme able membranes on its surfaces. The gas, which may be sulphur hexafluoride or fluoropropane, or another gas with high dielectric strength, is under pressure to prevent the cellular body collapsing under the hydrostatic pressure of the transformer oil. Both types of barrier may be provided with openings or gap to allow for the passage of a coolant or of supporting members. If the heat produced by the core is not excessive, the core may be enclosed completely in a gas container.
GB331962A 1962-01-29 1962-01-29 Means for reducing the noise generated by electrical transformers Expired GB987639A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB331962A GB987639A (en) 1962-01-29 1962-01-29 Means for reducing the noise generated by electrical transformers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB331962A GB987639A (en) 1962-01-29 1962-01-29 Means for reducing the noise generated by electrical transformers

Publications (1)

Publication Number Publication Date
GB987639A true GB987639A (en) 1965-03-31

Family

ID=9756077

Family Applications (1)

Application Number Title Priority Date Filing Date
GB331962A Expired GB987639A (en) 1962-01-29 1962-01-29 Means for reducing the noise generated by electrical transformers

Country Status (1)

Country Link
GB (1) GB987639A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1659044A2 (en) * 2004-10-27 2006-05-24 Hitachi, Ltd. Sound insulation members of a railroad vehicle, and production methods of sound insulation members

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1659044A2 (en) * 2004-10-27 2006-05-24 Hitachi, Ltd. Sound insulation members of a railroad vehicle, and production methods of sound insulation members
EP1659044A3 (en) * 2004-10-27 2006-06-07 Hitachi, Ltd. Sound insulation members of a railroad vehicle, and production methods of sound insulation members

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