JPS5629435A - Stator coil of electric rotary machine - Google Patents

Stator coil of electric rotary machine

Info

Publication number
JPS5629435A
JPS5629435A JP10536379A JP10536379A JPS5629435A JP S5629435 A JPS5629435 A JP S5629435A JP 10536379 A JP10536379 A JP 10536379A JP 10536379 A JP10536379 A JP 10536379A JP S5629435 A JPS5629435 A JP S5629435A
Authority
JP
Japan
Prior art keywords
layer
semiconducting
insulating
insulating layer
low resistance
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.)
Pending
Application number
JP10536379A
Other languages
Japanese (ja)
Inventor
Tetsuo Osono
Isao Tani
Kichiji Kaneda
Makoto Tsukiji
Takatoshi Ishikawa
Takeshi Kimura
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP10536379A priority Critical patent/JPS5629435A/en
Publication of JPS5629435A publication Critical patent/JPS5629435A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/34—Testing dynamo-electric machines

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

PURPOSE:To measure precisely the insulating property of the main insulating layer alone of the stator core of an electric rotary machine by a method wherein a semiconducting layer is provided between the main insulating layer and a low resistance corona shielding layer, and the nondestructive insulation test is performed by applying a voltage between the semiconducting layer and a strand conductor. CONSTITUTION:A strand insulating material 3, an under solidifying layer 5, a main insulating layer 6 and a protective layer 7 are provided in order on the outside of a strand conductor 2 to form an insulating layer 4. A low resistance corona shielding layer 8 is provided on the outer circumference of the insulating layer 4 and a semiconducting layer 9 is provided at the inside of the protective layer 7, and at ordinary times the semiconducting layer 9, the low resistance corona shielding layer 8 and a protecting electrode 13 of a field mitigating layer 12 are earthed with a short-circuiting earth piece 11. When the nondestructive insulation test is to be performed on a stator coil 10, the short-circuiting earth piece 11 is removed and a test voltage is applied between the semiconducting layer 9 and the strand conductor 2. By this way, the insulating character of the main insulating layer 6 alone can be measured precisely.
JP10536379A 1979-08-18 1979-08-18 Stator coil of electric rotary machine Pending JPS5629435A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10536379A JPS5629435A (en) 1979-08-18 1979-08-18 Stator coil of electric rotary machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10536379A JPS5629435A (en) 1979-08-18 1979-08-18 Stator coil of electric rotary machine

Publications (1)

Publication Number Publication Date
JPS5629435A true JPS5629435A (en) 1981-03-24

Family

ID=14405636

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10536379A Pending JPS5629435A (en) 1979-08-18 1979-08-18 Stator coil of electric rotary machine

Country Status (1)

Country Link
JP (1) JPS5629435A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7026554B2 (en) * 2003-10-02 2006-04-11 General Electric Company Stator bar with exruded groundwall insulation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7026554B2 (en) * 2003-10-02 2006-04-11 General Electric Company Stator bar with exruded groundwall insulation

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