JPS57114213A - On-load tap changer - Google Patents

On-load tap changer

Info

Publication number
JPS57114213A
JPS57114213A JP35281A JP35281A JPS57114213A JP S57114213 A JPS57114213 A JP S57114213A JP 35281 A JP35281 A JP 35281A JP 35281 A JP35281 A JP 35281A JP S57114213 A JPS57114213 A JP S57114213A
Authority
JP
Japan
Prior art keywords
metal fittings
operating shaft
neutral point
potential
load tap
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
JP35281A
Other languages
Japanese (ja)
Inventor
Shigekatsu Sato
Yoshito Ueno
Masakatsu Sugawara
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP35281A priority Critical patent/JPS57114213A/en
Publication of JPS57114213A publication Critical patent/JPS57114213A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices

Abstract

PURPOSE:To prevent electric potential rise of the neutral point and to enable to form an on-load tap changer in a small type by a method wherein doughtnut type arrester elements are inserted and connected at least on one side of an operating shaft between the earth potential part and the electric neutral point potential part of an on-load tap changing transformer. CONSTITUTION:Driving force applied from a quick-break driving mechanism 2 is transmitted to the operating shaft 21 through an insulated operating shaft 11. A movable contactor 14 for change-over of current is driven by the driving shaft 21, and is made to rotate and to come in contact with a fixed contactor 12. The operating shaft 21 is connected to a lower part metal fittings 17 through a metal fittings 15 and a lead wire 16 to be made to have the neutral point potential, and an upper part metal fittings 26 fixed to a flange 7 is made to have the earth potential. The doughnut type arrester elements 30 are inserted between an upper part supporting metal fittings 31 and a lower part supporting metal fittings 34 extending over the plural stages on the insulated operating shaft 11. Accordingly when the neutral point electric potential reaches the prescribed set point, a current is made to flow between the operating shaft 21 of the neutral point and the upper part metal fittings 26 to prevent electric potential rise, intensification of insulation is unnecessitated, insulation can be omitted, and reduction of weight and formation into a small type can be attained.
JP35281A 1981-01-07 1981-01-07 On-load tap changer Pending JPS57114213A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP35281A JPS57114213A (en) 1981-01-07 1981-01-07 On-load tap changer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP35281A JPS57114213A (en) 1981-01-07 1981-01-07 On-load tap changer

Publications (1)

Publication Number Publication Date
JPS57114213A true JPS57114213A (en) 1982-07-16

Family

ID=11471434

Family Applications (1)

Application Number Title Priority Date Filing Date
JP35281A Pending JPS57114213A (en) 1981-01-07 1981-01-07 On-load tap changer

Country Status (1)

Country Link
JP (1) JPS57114213A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113012962A (en) * 2021-03-29 2021-06-22 国家电网有限公司 Device for conducting action signal of on-load tap-changer of transformer
EP3747100B1 (en) * 2018-01-30 2022-03-16 Hitachi Energy Switzerland AG Surge arrestor dimensioning in a dc power transmission system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3747100B1 (en) * 2018-01-30 2022-03-16 Hitachi Energy Switzerland AG Surge arrestor dimensioning in a dc power transmission system
CN113012962A (en) * 2021-03-29 2021-06-22 国家电网有限公司 Device for conducting action signal of on-load tap-changer of transformer
CN113012962B (en) * 2021-03-29 2023-01-24 国家电网有限公司 Device for conducting action signal of on-load tap-changer of transformer

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