Title:
STATE MONITORING DEVICE FOR ELECTRICAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2013/057925
Kind Code:
A1
Abstract:
The present invention provides a state monitoring device for constantly monitoring the temperature and the dust adhesion to a charging unit in a high voltage main circuit for a metal-enclosed switchgear, which can be easily attached to or detached from an electrical device. The state monitoring device is provided with a first core (21) and a second core (22) arranged in the periphery of a conductive body (33) for the passage of electricity, a coil (3) which is wound around a part of said second core (22) and generates an induction voltage in response to the passage of electricity through the conductive body (33), a temperature sensor (6) for measuring the temperature of the conductive body (33), a dust sensor (9) for measuring the amount of adherence of dust to an installation section, and a transmission unit (42) for transmitting to the outside the measurement results from the temperature sensor (6) and the dust sensor (9). The first core (21) and the second core (22) are arranged to come into contact with each other so as to surround the periphery of the conductive body (33).
Inventors:
YAMAJI YUICHI (JP)
Application Number:
PCT/JP2012/006606
Publication Date:
April 25, 2013
Filing Date:
October 16, 2012
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
YAMAJI YUICHI (JP)
YAMAJI YUICHI (JP)
International Classes:
H02B3/00; H02B13/065
Foreign References:
| JP2011010517A | 2011-01-13 | |||
| JP2007202298A | 2007-08-09 | |||
| JP2001067971A | 2001-03-16 |
Attorney, Agent or Firm:
TAKAHASHI, Shogo et al. (JP)
Shogo Takahashi (JP)
Shogo Takahashi (JP)
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Claims: