Title:
ELECTRIC LEAKAGE DETECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/159535
Kind Code:
A1
Abstract:
In this electric leakage detection device of a midpoint grounding method, a current for detection that flows through a resistor is reduced and consumption power is suppressed, while simultaneously reducing current detection sensitivity. An electric leakage detection device that is connected between a pair of electric transmission lines, said electric leakage detection device having: a first resistor circuit, in which a first linear resistor element and a first constant voltage element are serially connected, said first constant voltage element becoming low-resistance in response to the application of a voltage that surpasses a prescribed voltage and maintaining a constant voltage between both ends; and a second resistor circuit, in which a second linear resistor element and a second constant voltage element are serially connected, said second constant voltage element becoming low-resistance in response to the application of a voltage that surpasses a prescribed voltage and maintaining a constant voltage between both ends, wherein the first resistor circuit and the second resistor circuit are serially connected between the electric transmission lines, and a connection point of the first resistor circuit and the second resistor circuit is grounded.
Inventors:
HANEDA MASAJI (JP)
Application Number:
PCT/JP2017/009474
Publication Date:
September 21, 2017
Filing Date:
March 09, 2017
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
G01R31/02; H02H3/16
Foreign References:
| JPS5649231Y2 | 1981-11-17 | |||
| JPS50127630U | 1975-10-20 | |||
| JP2013130536A | 2013-07-04 | |||
| JP2014522628A | 2014-09-04 | |||
| JPH05275687A | 1993-10-22 | |||
| JPH1188095A | 1999-03-30 |
Other References:
See also references of EP 3432011A4
Attorney, Agent or Firm:
KOJIMA Takiro (JP)
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