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Patent Searching and Data


Title:
GROUNDING CIRCUIT, ELECTRICAL DEVICE, GROUNDING CONTROL METHOD, AND GROUNDING CONTROL PROGRAM
Document Type and Number:
WIPO Patent Application WO/2017/204097
Kind Code:
A1
Abstract:
[Problem] To suppress current flowing to a contact of a relay when grounding a device to be grounded by connecting the contact of the relay, and to suppress arc discharge between relay contacts when the grounding state of the device to be grounded is released by disconnecting the relay contact. [Solution] A grounding circuit equipped with: a first relay contact connected to a device to be grounded; a resistor that is connected between the first relay contact and an earth, and that suppresses current flowing to the first relay contact when the contact of the first relay is closed; and a second relay contact that is connected in parallel with the resistor, and that is closed before the first relay contact is opened when the grounding state of the device to be grounded is released.

Inventors:
YAMAGUCHI Shohei (7-1 Shiba 5-chome, Minato-k, Tokyo 01, 〒1088001, JP)
Application Number:
JP2017/018773
Publication Date:
November 30, 2017
Filing Date:
May 19, 2017
Export Citation:
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Assignee:
NEC CORPORATION (7-1 Shiba 5-chome, Minato-ku Tokyo, 01, 〒1088001, JP)
International Classes:
H02H9/02; H02G9/02; H04B3/44
Foreign References:
JPH06104799A1994-04-15
JPH05129991A1993-05-25
JP2000341818A2000-12-08
Other References:
See also references of EP 3467983A4
Attorney, Agent or Firm:
SHIMOSAKA Naoki (7-1 Shiba 5-chome, Minato-k, Tokyo 01, 〒1088001, JP)
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