Title:
EARTH LEAKAGE BREAKER
Document Type and Number:
Japanese Patent JP3793753
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve workability of a conductor to a zero-phase-sequence current transformer, and to mutually surely insulate the conductor of respective poles.
SOLUTION: When arranging an interpolar insulating barrier 42 inside the zero-phase-sequence current transformer 35, since the interpolar insulating barrier 42 mutually insulates respective conductor plates 221 to 223 penetrating through the zero-phase-sequence current transformer 35, the necessity of covering the respective conductor plates 221 to 223 one by one is eliminated, thickening of the conductor plates can be prevented, and penetrating work to the zero- phase-sequence current transformer 35 can be easily performed. The conductor plates 221 to 223 are properly bent, and can be formed in a small shape as a whole, and can be easily arranged in this earth leakage breaker.
Inventors:
Takahiro Kashima
Terumi Shimano
Terumi Shimano
Application Number:
JP2002368224A
Publication Date:
July 05, 2006
Filing Date:
September 20, 1991
Export Citation:
Assignee:
Hitachi Industrial Equipment Systems Co., Ltd.
International Classes:
H01H83/02; (IPC1-7): H01H83/02
Domestic Patent References:
| JP63184543U | ||||
| JP48038322U | ||||
| JP5685363U | ||||
| JP5832323A |
Attorney, Agent or Firm:
Yasuo Sakuta