Title:
GROUNDING DEVICE FOR DISCONNECTOR
Document Type and Number:
Japanese Patent JP2016226188
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a grounding device for disconnector capable of eliminating the need of ground excavation construction by making a lower end position of a housing higher than a ground surface even in the case where a voltage grade is 275 kV, and further capable of making a potential gradient in an upper end of a movable electrode rod equal to or less than a designed reference value even under snow accumulation.SOLUTION: The grounding device for disconnector comprises: a support porcelain tube 3 supporting a charging part 7 of a disconnector; a movable electrode rod 5 that is lifted within the support porcelain tube; a mechanism case 2 including a lift mechanism 6 for the movable electrode rod 5; and a housing 4 for housing the movable electrode rod 5 that is moved down. The support porcelain tube 3 is configured by connecting two upper and lower porcelain tubes 3A and 3B in series via an intermediate connection fitting 10, and a height of the intermediate connection fitting 10 is made lower than an upper end of the movable electrode rod 5 that is located at a falling position.SELECTED DRAWING: Figure 6
Inventors:
NISHIKAWA TAKASHI
SASAKI SHINNOSUKE
SASAKI SHINNOSUKE
Application Number:
JP2015111269A
Publication Date:
December 28, 2016
Filing Date:
June 01, 2015
Export Citation:
Assignee:
NGK INSULATORS LTD
International Classes:
H02B1/16; H01H31/32; H02B5/01
Domestic Patent References:
| JPS60216419A | 1985-10-29 | |||
| JPH0449210B2 | 1992-08-10 | |||
| JPS60262319A | 1985-12-25 |
Attorney, Agent or Firm:
Patent Business Corporation Najima Patent Office