Title:
UNINTERRUPTIBLE SWITCHER FOR HIGH VOLTAGE MACHINE
Document Type and Number:
Japanese Patent JP3286462
Kind Code:
B2
Abstract:
PURPOSE: To prevent the electric shock accident positively when a bypass circuit is formed without interrupting power supply at the time of replacing a power meter.
CONSTITUTION: A bypass circuit B on the load side of a gas switch 8 is provided with an instrument voltage current transformer 20 connected with a watthour meter 21. The watthour meter 21 measures power being fed through the bypass circuit B to a consumer. The instrument voltage current transformer 20 comprises a transformer 23 connected, on the primary, with each phase of the bypass circuit B. A disconnector 25 is arranged between the bypass circuit B and the primary of the transformer 23 connected with phases U and W. Since the disconnector 25 disconnects the primary of the transformer 23 from a branch line at the time of forming the bypass circuit B, no voltage is applied from the branch line to the ground through the transformer 23.
Inventors:
Kunio Sugiyama
Yoneyama Kuji
Katsuhiko Mori
Yoneyama Kuji
Katsuhiko Mori
Application Number:
JP9894894A
Publication Date:
May 27, 2002
Filing Date:
May 12, 1994
Export Citation:
Assignee:
Chubu Electric Power Co., Inc.
Energy Support Co., Ltd.
Energy Support Co., Ltd.
International Classes:
H02J9/00; H02J3/00; H02J9/06; (IPC1-7): H02J9/06; H02J3/00; H02J9/00
Domestic Patent References:
| JP638407A | ||||
| JP3273833A | ||||
| JP398430A |
Attorney, Agent or Firm:
Hironobu Onda
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