Title:
LEAKAGE RELAY
Document Type and Number:
Japanese Patent JP3475692
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To easily discriminate the leakage condition and the electrifying condition by turning a display member around a pivotal support part with a movement of a movable frame between the normal condition and the leakage condition, and fitting a fixed contact, a reset member and a display member to a base through one base material.
SOLUTION: In the case where a movable contact 50 makes contact with a fixed contact 8 so as to flow the current between external connecting terminals 30a, 30b and 30c, 30d and the leak current is not generated, since an equilibrium current is flowed between a pair of movable contacts 7, leakage corresponding current is not induced in a secondary side of a zero-phase current transformer 26. In the case where the leakage current is flowed, this leakage current is amplified, and the existing current is flowed in a coil 42, and a receiver part 47 is removed from a movable frame locking part 40. A movable frame 6 is moved downward by the spring force of the movable contact 7, and the movable contact 50 is separated from a fixed contact 8. With this movement, a contact display member 68 is turned, and a display unit 72 displays off, and the movable frame 6 is raised so as to turn the display member 68, and the display unit 72 is separated from a display window.
Inventors:
Hitoshi Makinaga
Wataru Taiki
Kazuharu Sonoda
Kimura Welfare
Wataru Taiki
Kazuharu Sonoda
Kimura Welfare
Application Number:
JP1121597A
Publication Date:
December 08, 2003
Filing Date:
January 24, 1997
Export Citation:
Assignee:
MATSUSHITA ELECTRIC WORKS,LTD.
International Classes:
H01H83/02; (IPC1-7): H01H83/02
Domestic Patent References:
| JP727045U |
Attorney, Agent or Firm:
Akio Miyai
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