GB1129887A - Improvements in and relating to means for controlling dielectric stresses in electrical insulation - Google Patents

Improvements in and relating to means for controlling dielectric stresses in electrical insulation

Info

Publication number
GB1129887A
GB1129887A GB5113464A GB5113464A GB1129887A GB 1129887 A GB1129887 A GB 1129887A GB 5113464 A GB5113464 A GB 5113464A GB 5113464 A GB5113464 A GB 5113464A GB 1129887 A GB1129887 A GB 1129887A
Authority
GB
United Kingdom
Prior art keywords
asbestos
conductor
insulation
enclosure
axis
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
GB5113464A
Inventor
George Herman Hickling
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.)
CA Parsons and Co Ltd
Original Assignee
CA Parsons and 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 CA Parsons and Co Ltd filed Critical CA Parsons and Co Ltd
Priority to GB5113464A priority Critical patent/GB1129887A/en
Publication of GB1129887A publication Critical patent/GB1129887A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/32—Windings characterised by the shape, form or construction of the insulation
    • H02K3/40—Windings characterised by the shape, form or construction of the insulation for high voltage, e.g. affording protection against corona discharges

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

1,129,887. Insulation for, and securing coils for, dynamo-electric machines. C. A. PAR- .SONS & CO. Ltd. 16 Dec., 1965 [16 Dec., 1964], No. 51134/64. Heading H2A. Means for controlling dielectric stresses in the insulation of a conductor where it emerges from an electrically-conducting enclosure comprises one or more separate capacitive and resistive members of electrically insulating material at least partially surrounding the conductor and its insulation and in electric contact with the enclosure, the material having a low specific impedance (as defined in the Specification) and the member(s) having an impedance normal to the conductor axis less than that parallel to the conductor axis. Preferred materials are synthetic-resin-impregnated asbestos cloth, asbestos felt, and asbestos paper laminates. Preferably the impedance of the member increases in a predetermined manner with distance from the enclosure. This may be achieved by making the member wedge-shaped (or annular-conical) with the greater cross-section next to the enclosure. 'The member is oriented with the laminations perpendicular to the conductor axis. Alternatively, a material may be used consisting of laminµ of asbestos fabric in which asbestos fibres rare interwoven with glass fibres; or linen, and in this case the member is cut from a block so that the laminµ are parallel to the conductor axis, but in each lamina the asbestos fibres lie perpendicular to the conductor axis while the remaining fibres lie parallel to the axis. In Figs. 5 and 6 the member 4 is arcuate and has slots 10 coinciding with the ends of slots in a turbo-generator stator (not shown) through which conductors emerge; it is held in contact with the stator end face by I section members provided on the latter, and engaged by keyways 12, Fig. 6, in the member 4. Each wedgeshaped portion of member 4, Fig. 6 (crosssection), co-operates with, and lies between, two conductors; the portion tapers in the direction away from the stator core and is separated from the conductors by insulation 5.
GB5113464A 1964-12-16 1964-12-16 Improvements in and relating to means for controlling dielectric stresses in electrical insulation Expired GB1129887A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5113464A GB1129887A (en) 1964-12-16 1964-12-16 Improvements in and relating to means for controlling dielectric stresses in electrical insulation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5113464A GB1129887A (en) 1964-12-16 1964-12-16 Improvements in and relating to means for controlling dielectric stresses in electrical insulation

Publications (1)

Publication Number Publication Date
GB1129887A true GB1129887A (en) 1968-10-09

Family

ID=10458782

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5113464A Expired GB1129887A (en) 1964-12-16 1964-12-16 Improvements in and relating to means for controlling dielectric stresses in electrical insulation

Country Status (1)

Country Link
GB (1) GB1129887A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1164686A2 (en) * 2000-05-29 2001-12-19 ABB Industry Oy A field compensation layer in a winding
US20150381005A1 (en) * 2013-02-25 2015-12-31 Hitachi, Ltd. Rotary Machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1164686A2 (en) * 2000-05-29 2001-12-19 ABB Industry Oy A field compensation layer in a winding
EP1164686A3 (en) * 2000-05-29 2003-12-10 ABB Industry Oy A field compensation layer in a winding
US20150381005A1 (en) * 2013-02-25 2015-12-31 Hitachi, Ltd. Rotary Machine

Similar Documents

Publication Publication Date Title
AU2989197A (en) Conductor for high-voltage windings and a rotating electric machine comprising a winding including the conductor
GB1354991A (en) Electrical machine laminated armature core
KR840007649A (en) Armature of rotary electric machine and manufacturing method thereof
GB1485522A (en) High voltage insulated electrical conductor
ES452456A1 (en) Arrangement for electrically connecting wire coils of an electric machine to an electric circuit
GB1237987A (en)
GB2277205B (en) Rotating electrical machines
GB1092865A (en) Stator assemblies for dynamo-electric machines
GB1196924A (en) Improvements in and relating to Synchronous or Asynchronous Electrical Machines
US2298862A (en) Dynamoelectric machine construction
GB1129887A (en) Improvements in and relating to means for controlling dielectric stresses in electrical insulation
EP0994551A3 (en) Winding arrangement for a polyphase electric machine and its production
GB974730A (en) Improvements in or relating to salient-pole-rotor electrical machines
GB1037597A (en) Improvements in dynamoelectric machine rotor end winding
GB1526081A (en) Corona suppression in high voltage windings of dynamoelectric machines
JPS55166472A (en) Armature for commutator rotary machine
GB1494598A (en) Rotor winding
ES320626A1 (en) Method for connecting a collector with a tripolar or multipolar rotor for use in a small electric machine. (Machine-translation by Google Translate, not legally binding)
GB1038026A (en) Improvements in flat electrical windings formed of bare lamellar conductors
GB682357A (en) Improvements in and relating to dynamo-electric machines
US3084270A (en) Pole face winding connections
GB941078A (en) Rotors for dynamo electric machines
GB651060A (en) Improvements in and relating to field coils for salient pole dynamoelectric machines
GB1316256A (en) Conductors for dynamo-electric machine windings
GB1390962A (en) Shrink-ring commutators for electrical machines