Title:
回線の絶縁抵抗測定装置
Document Type and Number:
Japanese Patent JP4043168
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method and a device for measuring the insulation resistance of a line which can measure the insulation resistance in real time without stopping the use of an actuating facility, and surely can detect insulating defects even when the electric potential is fluctuated at a contact point. SOLUTION: In this method for measuring the insulation resistance between the lines and the ground is measured by the resistance for measurement and the current Is for measurement flowing in the lines to be measured by applying the voltage for measurement between lines 1 and 2 to be measured and the ground via a resistance Rs for measurement connected in series and a power source Es for measurement, the resistance Rs for measurement can be changed over to a first state in which the resistance is connected in series to the power source Es for measurement and a second state the resistance is separated from the power source Es for measurement and directly connected to the ground, the difference between the current Is for measurement flowing in the first state and the current Is' for measurement flowing in the second state is calculated, and the propriety of the insulation resistance of the lines to be measured is judged from the current value.
Inventors:
Takao Hiraishi
Koji Ota
Yoshitaka Yoshizaki
Koji Ota
Yoshitaka Yoshizaki
Application Number:
JP2000173212A
Publication Date:
February 06, 2008
Filing Date:
June 09, 2000
Export Citation:
Assignee:
Daido Signal Co., Ltd.
International Classes:
G01R27/02; G01R31/02; G05F1/10
Domestic Patent References:
| JP4359163A | ||||
| JP60257371A | ||||
| JP63139261A | ||||
| JP59202076A | ||||
| JP562569A |
Attorney, Agent or Firm:
Igarashi Kazutoshi