Title:
ELECTRIC LEAK DETECTION DEVICE AND ELECTRIC LEAK DETECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2017/073031
Kind Code:
A1
Abstract:
In the present invention, an electric leak detection device has a signal output unit, a signal extraction unit, and an electric leak determination unit. The signal output unit outputs an inspection signal to a high-voltage circuit via a detection resistor and a coupling capacitor that are connected by a node. The signal extraction unit adjusts the inspection signal at the node and outputs an extraction signal. The electric leak determination unit senses an electric leak in the high-voltage circuit on the basis of the amplitude of the extraction signal. In cases when the difference between the center value of the amplitude in the present period of the extraction signal and a reference value set on the basis of the center value of the amplitude in a past period of the extraction signal is within a permissible range, an electric leak detection result based on the amplitude in the present period is outputted. In cases when the difference is outside the permissible range, no electric leak detection result based on the amplitude in the present period is outputted.
Inventors:
YAMASHITA MAKOTO
KUREURA TATSUYA
SEKINO HARUHIKO
MATSUKAWA KOJI
KUREURA TATSUYA
SEKINO HARUHIKO
MATSUKAWA KOJI
Application Number:
PCT/JP2016/004611
Publication Date:
May 04, 2017
Filing Date:
October 18, 2016
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
G01R31/02
Foreign References:
| JP2007108074A | 2007-04-26 | |||
| JP2002098728A | 2002-04-05 | |||
| JP2010249766A | 2010-11-04 |
Attorney, Agent or Firm:
KAMATA, Kenji et al. (JP)
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