JPS5575209A - Resinous-mold type transformer - Google Patents

Resinous-mold type transformer

Info

Publication number
JPS5575209A
JPS5575209A JP14939578A JP14939578A JPS5575209A JP S5575209 A JPS5575209 A JP S5575209A JP 14939578 A JP14939578 A JP 14939578A JP 14939578 A JP14939578 A JP 14939578A JP S5575209 A JPS5575209 A JP S5575209A
Authority
JP
Japan
Prior art keywords
insulating layer
winding
electric
layer
field
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
JP14939578A
Other languages
Japanese (ja)
Inventor
Isao Tani
Eiichi Hirasawa
Kazuo Yoshida
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 JP14939578A priority Critical patent/JPS5575209A/en
Publication of JPS5575209A publication Critical patent/JPS5575209A/en
Pending legal-status Critical Current

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  • Insulating Of Coils (AREA)

Abstract

PURPOSE: To avoid generation of partial discharge by providing an electric-field reducing layer having voltage-nonlinear resistance characteristics on the insulating layer for at least one winding of the primary winding and the secondary winding which constitute a transformer.
CONSTITUTION: The primary winding 2 and the secondary winding 3 are wound around an iron core 5. A main insulating layer 1, around which tape- or sheet- shaped mica, synthetic film, and the like are wound, is intervened between the windings and the core. After synthetic resin such as epoxy resin and the like is impregnated, an outer insulating layer 4 is formed, and an mold is formed. In this constitution, an electric-field reducing layer 1a having voltage-nonlinear resistance characteristics is provided on the surface of the main insulating layer 1 for at least one winding. Said reducing layer 1a is formed by applying high-resistance paint comprising silicon-carbide powder and a bonding ageant. Since the resistance at a portion of the later layer 1a to which a high electric field is applied is small and the resistance at a portion to which a low electric field is applied is high, the electric- field intensity between the layers 1 and 4 becomes moderate, thereby partial discharge is avoided.
COPYRIGHT: (C)1980,JPO&Japio
JP14939578A 1978-11-30 1978-11-30 Resinous-mold type transformer Pending JPS5575209A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14939578A JPS5575209A (en) 1978-11-30 1978-11-30 Resinous-mold type transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14939578A JPS5575209A (en) 1978-11-30 1978-11-30 Resinous-mold type transformer

Publications (1)

Publication Number Publication Date
JPS5575209A true JPS5575209A (en) 1980-06-06

Family

ID=15474183

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14939578A Pending JPS5575209A (en) 1978-11-30 1978-11-30 Resinous-mold type transformer

Country Status (1)

Country Link
JP (1) JPS5575209A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04124019U (en) * 1992-03-10 1992-11-11 ヤンマー農機株式会社 rice transplanter
CN111009362A (en) * 2019-11-25 2020-04-14 长园电力技术有限公司 Forming method of shielding type insulating tube, transformer and transformer bushing

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04124019U (en) * 1992-03-10 1992-11-11 ヤンマー農機株式会社 rice transplanter
CN111009362A (en) * 2019-11-25 2020-04-14 长园电力技术有限公司 Forming method of shielding type insulating tube, transformer and transformer bushing
CN111009362B (en) * 2019-11-25 2022-04-22 长园电力技术有限公司 Forming method of shielding type insulating tube, transformer and transformer bushing

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