Title:
NON-CONTACT VOLTAGE SENSOR DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/126991
Kind Code:
A1
Abstract:
A non-contact voltage sensor device (1) comprises: a probe electrode (10); an impedance circuit (14) in which the probe electrode (10) is connected to an input point (A) and which has a first resistance element (142) for simulating the insulation resistance of a cable cover (2b), a first capacitor element (141) for simulating the coupling capacitance occurring between the probe electrode (10) and a cable conductor (2a) through the cable cover (2b), and an ESR simulating circuit (143) for simulating the equivalent series resistance occurring in the coupling capacitance; and an operational amplifier (15) in which a positive electrode input terminal is connected to a reference potential point, a negative electrode input terminal is connected to the input point (A), and an output terminal is connected to the ESR simulating circuit (143).
Inventors:
TAMAKI YUZO (JP)
AKEBOSHI YOSHIHIRO (JP)
AKEBOSHI YOSHIHIRO (JP)
Application Number:
PCT/JP2021/048462
Publication Date:
July 06, 2023
Filing Date:
December 27, 2021
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
G01R15/16
Domestic Patent References:
| WO2021090478A1 | 2021-05-14 |
Foreign References:
| JP2018132346A | 2018-08-23 | |||
| JP2015175655A | 2015-10-05 | |||
| JP2003028900A | 2003-01-29 | |||
| US5473244A | 1995-12-05 |
Attorney, Agent or Firm:
SANNO PATENT ATTORNEYS OFFICE (JP)
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