JPS5475501A - Shaft current detector - Google Patents
Shaft current detectorInfo
- Publication number
- JPS5475501A JPS5475501A JP14277877A JP14277877A JPS5475501A JP S5475501 A JPS5475501 A JP S5475501A JP 14277877 A JP14277877 A JP 14277877A JP 14277877 A JP14277877 A JP 14277877A JP S5475501 A JPS5475501 A JP S5475501A
- Authority
- JP
- Japan
- Prior art keywords
- current
- insulator
- shaft
- shaft current
- switching device
- 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
Abstract
PURPOSE: To detct a shaft current continuously in operation from the outside by conducting the shaft current of a rotary shaft with a carbon brush to a current detecting stage and detecting the shaft current with a current indicating means.
CONSTITUTION: A brush 4 is contacted to an end of a rotary shaft 1 supported with a base 7 through an insulator 6 and connected to a gate of an electronic switching device 8 through a diode for stopping a reverse current and the cathode of the device 8 is connected to a counter side of the base 7 of the insulator 6. The anode of the switching device is connected to a resistor 9, a relay 10 and a positive terminal of a power supply 11 in seriese and a negative terminal of the power supply 11 is connected to the cathode of the switching device to make a current detection circuit 5. The device 8 is not conducted because of a high resistance of the insulator 6 but deterioration of the insulator allows to reach a shaft current to a set point, to conduct the device 8 and to operate a current indicator with a relay 10.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14277877A JPS5475501A (en) | 1977-11-30 | 1977-11-30 | Shaft current detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14277877A JPS5475501A (en) | 1977-11-30 | 1977-11-30 | Shaft current detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5475501A true JPS5475501A (en) | 1979-06-16 |
Family
ID=15323362
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14277877A Pending JPS5475501A (en) | 1977-11-30 | 1977-11-30 | Shaft current detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5475501A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20040049914A (en) * | 2002-12-05 | 2004-06-14 | 계양전기 주식회사 | Auto-testing apparatus for insulation of a/r molding shaft |
-
1977
- 1977-11-30 JP JP14277877A patent/JPS5475501A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20040049914A (en) * | 2002-12-05 | 2004-06-14 | 계양전기 주식회사 | Auto-testing apparatus for insulation of a/r molding shaft |
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