FR2043053A5 - Corona shield for the high voltage windings - of electrical machines - Google Patents

Corona shield for the high voltage windings - of electrical machines

Info

Publication number
FR2043053A5
FR2043053A5 FR7012615A FR7012615A FR2043053A5 FR 2043053 A5 FR2043053 A5 FR 2043053A5 FR 7012615 A FR7012615 A FR 7012615A FR 7012615 A FR7012615 A FR 7012615A FR 2043053 A5 FR2043053 A5 FR 2043053A5
Authority
FR
France
Prior art keywords
high voltage
electrical machines
voltage windings
corona shield
over
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
FR7012615A
Other languages
French (fr)
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Application granted granted Critical
Publication of FR2043053A5 publication Critical patent/FR2043053A5/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

Abstract

Corona shield for the high voltage windings of electrical machines. Over the insulating sheath and in the region of the slots, a weakly conductive cladding with surface resistivity of approx. 109 ohms per cm2 is placed. Over this a yet further layer of more conductive material is placed in turn, this having a surface resistivity of the order of 1000 ohms. per cm2. These layers are built up of semi-conductive materials such as woven asbestos, asbestos paper, conductdive plastics or metallized glass fibre using a suitable synthetic resin binder. The first inbtermediate, layer may be applied over the main insulation before the latter is cured and the two may be cured simultaneously.
FR7012615A 1969-04-17 1970-04-07 Corona shield for the high voltage windings - of electrical machines Expired FR2043053A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691919422 DE1919422A1 (en) 1969-04-17 1969-04-17 External corona protection for high-voltage windings of electrical machines

Publications (1)

Publication Number Publication Date
FR2043053A5 true FR2043053A5 (en) 1971-02-12

Family

ID=5731420

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7012615A Expired FR2043053A5 (en) 1969-04-17 1970-04-07 Corona shield for the high voltage windings - of electrical machines

Country Status (2)

Country Link
DE (1) DE1919422A1 (en)
FR (1) FR2043053A5 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5681054A (en) * 1979-12-05 1981-07-02 Hitachi Ltd Corona shielding method
DE4219064A1 (en) * 1992-06-11 1993-12-16 Asea Brown Boveri Glow protection device for stator winding of electronic machine - has 1st layer penetrable by impregnation resin and superimposed 2nd textile layer impregnated by resin-repellant cpd., opt. pretreated with silicon resin or paint

Also Published As

Publication number Publication date
DE1919422A1 (en) 1970-11-05

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Legal Events

Date Code Title Description
ST Notification of lapse