Title:
RESIDUAL CURRENT OPERATED CIRCUIT-BREAKER
Document Type and Number:
WIPO Patent Application WO/2023/207834
Kind Code:
A1
Abstract:
A residual current operated circuit-breaker, comprising a residual current transformer, an excitation oscillation circuit, an integral circuit and a main control circuit, wherein the excitation oscillation circuit is connected to an excitation winding on the residual current transformer; the integral circuit is used for converting an excitation square wave signal generated by the excitation oscillation circuit into a triangular wave signal, and then respectively outputting the triangular wave signal by means of a first output end and a second output end; the first output end is connected to the main control circuit by means of a filter amplifier circuit; the second output end is directly connected to the main control circuit; and the main control circuit respectively collects the residual currents of the filter amplifier circuit and/or the second output end, and is used for controlling the residual current operated circuit-breaker to switch off. Therefore, not only can both large and small residual currents be processed, but the use of hardware circuits can also be reduced.
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Inventors:
WANG BANGLE (CN)
CAI YOUFENG (CN)
YAO XIFENG (CN)
SHI JIANXIN (CN)
ZHUO LI (CN)
YIN GANG (CN)
LUO ZHI (CN)
YAN GANG (CN)
FANG SUFANG (CN)
CAI YOUFENG (CN)
YAO XIFENG (CN)
SHI JIANXIN (CN)
ZHUO LI (CN)
YIN GANG (CN)
LUO ZHI (CN)
YAN GANG (CN)
FANG SUFANG (CN)
Application Number:
PCT/CN2023/090031
Publication Date:
November 02, 2023
Filing Date:
April 23, 2023
Export Citation:
Assignee:
ZHEJIANG CHINT ELECTRICS CO LTD (CN)
International Classes:
H02H3/34; G01R31/52; H02H3/04; H02H3/05
Foreign References:
| CN218678423U | 2023-03-21 | |||
| CN212780965U | 2021-03-23 | |||
| CN102830266A | 2012-12-19 | |||
| CN104659742A | 2015-05-27 | |||
| CN204679548U | 2015-09-30 | |||
| CN215870733U | 2022-02-18 | |||
| CN216290170U | 2022-04-12 | |||
| DE102017217040A1 | 2019-03-28 | |||
| JP2013038047A | 2013-02-21 |
Attorney, Agent or Firm:
BEIJING JOYAN INTELLECTUAL PROPERTY OFFICE (CN)
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