Title:
INSULATION RESISTANCE MONITORING DEVICE
Document Type and Number:
Japanese Patent JP2020148736
Kind Code:
A
Abstract:
To provide an insulation resistance monitoring device that can measure an insulation resistance using a megger tester without removing the insulation resistance monitoring device.SOLUTION: An insulation resistance monitoring device 100 monitors an insulation resistance of an object of measurement, such as a motor 40, and comprises: a current detection unit 10 that is connected between a power supply line and a ground line of the motor 40 and detects a current flowing in the insulation resistance of the motor 40; a voltage generating unit 20 that is connected between the power supply line and the ground line of the motor 40; and a switch 30 that opens/closes a connection path between the power supply line or the ground line of the motor 40 and the voltage generating unit 20. When the connection path is opened, the switch 30 has an off resistance of 100 MΩ or more.SELECTED DRAWING: Figure 1
Inventors:
YAMADA TOMOHIRO
Application Number:
JP2019048909A
Publication Date:
September 17, 2020
Filing Date:
March 15, 2019
Export Citation:
Assignee:
OMRON TATEISI ELECTRONICS CO
International Classes:
G01R31/50; G01R31/34
Domestic Patent References:
| JPS60153657U | 1985-10-14 | |||
| JP2004251689A | 2004-09-09 | |||
| JP2007159289A | 2007-06-21 | |||
| JP2016031298A | 2016-03-07 | |||
| JP2017062168A | 2017-03-30 | |||
| JP2010133954A | 2010-06-17 | |||
| JPH10115645A | 1998-05-06 | |||
| JP2012039796A | 2012-02-23 | |||
| JP2008157672A | 2008-07-10 | |||
| JP2005233822A | 2005-09-02 | |||
| JPS58116018A | 1983-07-11 | |||
| JP2018128320A | 2018-08-16 |
Attorney, Agent or Firm:
Takuji Yamada
Yukinori Nakakura
Yukinori Nakakura