Title:
VOLTAGE SENSOR AND APPARATUS
Document Type and Number:
WIPO Patent Application WO/2020/097933
Kind Code:
A1
Abstract:
Embodiments of present disclosure relate to a voltage sensor(10) and an apparatus(11) including the voltage sensor(10). The voltage sensor(10) comprises a first capacitor(12) configured to receive a first voltage for a first phase of an alternating current supply system(1), a second capacitor(14) coupled between the first capacitor(12) and a reference voltage and configured to generate a second voltage based on the first voltage; and a transformer(16) comprising a first winding(164) coupled in parallel to the second capacitor(14) and a second winding(166) magnetically coupled to the first winding(164), the transformer(16) configured to generate a third voltage directly for a field testing unit without conversion of voltage by a further transformer. The third voltage is based on the second voltage and below the second voltage.
Inventors:
WU LIANG (CN)
DENG ZHONGHUA (CN)
DENG ZHONGHUA (CN)
Application Number:
PCT/CN2018/115999
Publication Date:
May 22, 2020
Filing Date:
November 16, 2018
Export Citation:
Assignee:
ABB SCHWEIZ AG (CH)
WU LIANG (CN)
DENG ZHONGHUA (CN)
WU LIANG (CN)
DENG ZHONGHUA (CN)
International Classes:
G01R15/18; G01R15/16; G01R19/00; G01R31/00
Domestic Patent References:
| WO2018114661A1 | 2018-06-28 |
Foreign References:
| CN109188057A | 2019-01-11 | |||
| CN108646082A | 2018-10-12 | |||
| CN207215881U | 2018-04-10 | |||
| CN106842100A | 2017-06-13 | |||
| CN202854255U | 2013-04-03 | |||
| CN108646082A | 2018-10-12 | |||
| US20180136257A1 | 2018-05-17 |
Other References:
See also references of EP 3881085A4
Attorney, Agent or Firm:
KING & WOOD MALLESONS (CN)
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