Title:
GROUND LEAKAGE BREAKER
Document Type and Number:
Japanese Patent JP3890352
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a ground leakage breaker improved in workability of a conductor in relation to a zero-phase-sequence current transformer and is capable of mutually and surely insulating a conductor of each of poles.
SOLUTION: When an interpole insulating barrier 42 is arranged inside the zero-phase-sequence current transformer 35, the inter-pole insulating barrier 4 insulates each of conductors 221-223 penetrating through the zero-phase-sequence current transformer 35, and the need for coating each of the conductors 221-223 is eliminated, and thickening of the conductors can be prevented, to facilitate the work for penetrating through the zero-phase-sequence current transformer 35. The conductors 221-223 can be miniaturized over the whole by properly bending them, and can be easily arranged inside the ground leakage breaker.
Inventors:
Takahiro Kashima
Terumi Shimano
Terumi Shimano
Application Number:
JP2006013327A
Publication Date:
March 07, 2007
Filing Date:
January 23, 2006
Export Citation:
Assignee:
Hitachi Industrial Equipment Systems Co., Ltd.
International Classes:
H01H83/02
Domestic Patent References:
| JP63184543U | ||||
| JP58032323A | ||||
| JP48038322U |
Attorney, Agent or Firm:
Manabu Inoue