JPS6476630A - Defective vacuum detecting device for vacuum valve - Google Patents

Defective vacuum detecting device for vacuum valve

Info

Publication number
JPS6476630A
JPS6476630A JP23308287A JP23308287A JPS6476630A JP S6476630 A JPS6476630 A JP S6476630A JP 23308287 A JP23308287 A JP 23308287A JP 23308287 A JP23308287 A JP 23308287A JP S6476630 A JPS6476630 A JP S6476630A
Authority
JP
Japan
Prior art keywords
signal
discharge
capacitor
vacuum
voltage signal
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
JP23308287A
Other languages
Japanese (ja)
Inventor
Kenji Watanabe
Yuusaku Oonishi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP23308287A priority Critical patent/JPS6476630A/en
Publication of JPS6476630A publication Critical patent/JPS6476630A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/668—Means for obtaining or monitoring the vacuum

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)

Abstract

PURPOSE:To judge whether the vacuum is defective or good by detecting the inner discharge of a vacuum valve with a detecting electrode, detecting the signal generated across a resistor or a parallel circuit of a resistor and a capacitor connected to this electrode, and comparing the discharge signal contained in this signal with the channel power source signal. CONSTITUTION:The discharge signal passing a band pass filter 10 is inverted and amplified by an inversion amplifier 11, a diode 12 and peak holding capacitor 13 receive the output signal of the amplifier 11 and take out only the negative discharge voltage signal. A discharging FET switch 14 charges the discharge signal to the capacitor 13 for each specific phase range of the channel power source voltage signal in which the discharge signal is to be detected. A comparator 16 compares the voltage signal from a reference voltage generator 15 generating the voltage signal as the preset value for comparison and the discharge voltage signal from the capacitor 13 and outputs the discharge signal if it is larger. An AND circuit 17 receives the output of the comparator 16 and the output of a time adjusting circuit 9 and detects whether the channel signal is within the phase range or not.
JP23308287A 1987-09-17 1987-09-17 Defective vacuum detecting device for vacuum valve Pending JPS6476630A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23308287A JPS6476630A (en) 1987-09-17 1987-09-17 Defective vacuum detecting device for vacuum valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23308287A JPS6476630A (en) 1987-09-17 1987-09-17 Defective vacuum detecting device for vacuum valve

Publications (1)

Publication Number Publication Date
JPS6476630A true JPS6476630A (en) 1989-03-22

Family

ID=16949518

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23308287A Pending JPS6476630A (en) 1987-09-17 1987-09-17 Defective vacuum detecting device for vacuum valve

Country Status (1)

Country Link
JP (1) JPS6476630A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03205716A (en) * 1989-10-04 1991-09-09 Fuji Electric Co Ltd Vacuum down detecting device for vacuum valve-type switchgear
US5399973A (en) * 1992-04-02 1995-03-21 Fuji Electric Co., Ltd. Method and apparatus for detecting a reduction in the degree of vacuum of a vacuum valve while in operation
US6211475B1 (en) 1999-01-14 2001-04-03 Nec Corporation Keyboard with key lock function
WO2002049057A1 (en) * 2000-12-12 2002-06-20 Kabushiki Kaisha Meidensha Method and device for monitoring vacuum degree in vacuum circuit breaker
CN103578846A (en) * 2013-11-09 2014-02-12 宁夏天地经纬电力设备工程有限公司 Vacuum comparison device for measuring arc extinguish chamber vacuum degree

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03205716A (en) * 1989-10-04 1991-09-09 Fuji Electric Co Ltd Vacuum down detecting device for vacuum valve-type switchgear
US5399973A (en) * 1992-04-02 1995-03-21 Fuji Electric Co., Ltd. Method and apparatus for detecting a reduction in the degree of vacuum of a vacuum valve while in operation
US6211475B1 (en) 1999-01-14 2001-04-03 Nec Corporation Keyboard with key lock function
WO2002049057A1 (en) * 2000-12-12 2002-06-20 Kabushiki Kaisha Meidensha Method and device for monitoring vacuum degree in vacuum circuit breaker
US6952102B2 (en) 2000-12-12 2005-10-04 Kabushiki Kaisha Meidensha Method and apparatus for monitoring vacuum degree of vacuum in vacuum interrupter
CN103578846A (en) * 2013-11-09 2014-02-12 宁夏天地经纬电力设备工程有限公司 Vacuum comparison device for measuring arc extinguish chamber vacuum degree

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