JPS5527972A - Insulating resistance measurement device - Google Patents

Insulating resistance measurement device

Info

Publication number
JPS5527972A
JPS5527972A JP10154178A JP10154178A JPS5527972A JP S5527972 A JPS5527972 A JP S5527972A JP 10154178 A JP10154178 A JP 10154178A JP 10154178 A JP10154178 A JP 10154178A JP S5527972 A JPS5527972 A JP S5527972A
Authority
JP
Japan
Prior art keywords
amplifier
voltage
insulating resistance
resistor
earthing line
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
Application number
JP10154178A
Other languages
Japanese (ja)
Inventor
Koichi Sato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP10154178A priority Critical patent/JPS5527972A/en
Publication of JPS5527972A publication Critical patent/JPS5527972A/en
Pending legal-status Critical Current

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  • Measurement Of Resistance Or Impedance (AREA)

Abstract

PURPOSE: A simple protector device is provided to electrically separate amplifier from earthing line, thereby to protect amplifier from failure when voltage across impedance elements exceeds a specified value or the amplifier is overloaded.
CONSTITUTION: When measuring voltage from oscillator 1 is applied through amplifier 2 to active earthing line EL, feedback current passes in earthing line EL through insulating resistance R and floating capacitance C. The feedback current is detected by measuring resistor 5 and filter 6 to provide a measured value of insulating resistance. That is, comparator 20 receives voltage across the wiring on the amplifier 2 side of sending transformer 3 and compares it with a specified voltage. For example, when sending resistor 4 is short circuited, voltage across resistor 19 increases, and if it exceeds a specified value, the comparator actuates relay 21, and the amplifier 2 is protected.
COPYRIGHT: (C)1980,JPO&Japio
JP10154178A 1978-08-21 1978-08-21 Insulating resistance measurement device Pending JPS5527972A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10154178A JPS5527972A (en) 1978-08-21 1978-08-21 Insulating resistance measurement device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10154178A JPS5527972A (en) 1978-08-21 1978-08-21 Insulating resistance measurement device

Publications (1)

Publication Number Publication Date
JPS5527972A true JPS5527972A (en) 1980-02-28

Family

ID=14303287

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10154178A Pending JPS5527972A (en) 1978-08-21 1978-08-21 Insulating resistance measurement device

Country Status (1)

Country Link
JP (1) JPS5527972A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5821869U (en) * 1981-08-03 1983-02-10 株式会社トクヤマ High voltage insulation resistance measuring device
JPH06241233A (en) * 1992-10-09 1994-08-30 Internatl Business Mach Corp <Ibm> Ball-bearing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5821869U (en) * 1981-08-03 1983-02-10 株式会社トクヤマ High voltage insulation resistance measuring device
JPH06241233A (en) * 1992-10-09 1994-08-30 Internatl Business Mach Corp <Ibm> Ball-bearing device

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