JPS54103524A - Electrical route insulation resistance supervising device - Google Patents
Electrical route insulation resistance supervising deviceInfo
- Publication number
- JPS54103524A JPS54103524A JP1099978A JP1099978A JPS54103524A JP S54103524 A JPS54103524 A JP S54103524A JP 1099978 A JP1099978 A JP 1099978A JP 1099978 A JP1099978 A JP 1099978A JP S54103524 A JPS54103524 A JP S54103524A
- Authority
- JP
- Japan
- Prior art keywords
- direct current
- supervising
- voltage
- value
- electrical route
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Measurement Of Resistance Or Impedance (AREA)
- Emergency Protection Circuit Devices (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
PURPOSE: To supervise an insulation lowering of an electrical route discriminating an alternating current component and a direct current component by applying a direct current voltage to a circuit flowing a charging current, supervising an insulation state of the electrical route with this direct current voltage and by flowing a current flown through a stray capacitance through a condenser.
CONSTITUTION: Making an insulation resistance supervising value of an electrical route to be RA, a supervising voltage of a direct current power source 20 of a constant voltage E, a resistance value of a detecting resistor 6 R6, a sum of series resistance looking from an above mentioned direct current power source 20 such as current limitting resistors 5 and 14, a grounding resistance value at a "B" point etc. to be RB, then a voltage E6 appearing at both ends of the detecting resistor 6 becomes to be E6=R6.E/(RA+RB+R6), supervising a value of E6 corresponding with a variation of RA, detecting after comparing with a determined value at a comparator 72, only when reaching to a determined value a time limitting circuit 73 and a switching circuit 74 are operated and an electromagnetic device 8 is driven.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1099978A JPS54103524A (en) | 1978-02-02 | 1978-02-02 | Electrical route insulation resistance supervising device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1099978A JPS54103524A (en) | 1978-02-02 | 1978-02-02 | Electrical route insulation resistance supervising device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54103524A true JPS54103524A (en) | 1979-08-15 |
Family
ID=11765824
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1099978A Pending JPS54103524A (en) | 1978-02-02 | 1978-02-02 | Electrical route insulation resistance supervising device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54103524A (en) |
-
1978
- 1978-02-02 JP JP1099978A patent/JPS54103524A/en active Pending
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