Title:
GROUND WIRE SAFE VOLTAGE CONTROL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2013/013415
Kind Code:
A1
Abstract:
A ground wire safe voltage control system comprises a power supply circuit (11), a detection circuit (12), a processing circuit (13) and an output circuit (14). The output circuit (14) is connected to a power breaker connected with a load. The power supply circuit (11) is connected between a live wire (L) and a neutral wire (N) and used for supplying power to the control system. The detection circuit (12) is used for detecting a ground wire (PE) voltage. When the voltage difference between the ground wire (PE) voltage and the neutral wire (N) voltage reaches a predetermined safe voltage range, a control signal is output to the processing circuit (13). The processing circuit (13) is used for processing the ground wire (PE) voltage according to the control signal, controlling the output circuit (14) to trigger an external power breaker to power off, and disconnecting the power supply and the load. When the detection circuit (12) detects that the ground wire (PE) voltage reaches a predetermined range or the neutral and live wires are incorrectly connected, the processing circuit (13) and the output circuit (14) trigger leakage protection tripping and set an alarm and disconnect the power supply and the load, thereby achieving the objective of preventing fire hazards or electric shocks, so as to enhance the use safety of electric products.
Inventors:
WANG ZHONGYU (CN)
WU YONG (CN)
WU YONG (CN)
Application Number:
PCT/CN2011/077763
Publication Date:
January 31, 2013
Filing Date:
July 28, 2011
Export Citation:
Assignee:
SHENZHEN LIANGHUI TECHNOLOGY CO LTD (CN)
WANG ZHONGYU (CN)
WU YONG (CN)
WANG ZHONGYU (CN)
WU YONG (CN)
International Classes:
H02H3/14; H02H3/04; H02H3/26; H02H11/00
Foreign References:
| CN201129874Y | 2008-10-08 | |||
| CN101414193A | 2009-04-22 | |||
| CN202159961U | 2012-03-07 | |||
| CN102332699A | 2012-01-25 | |||
| CN201199583Y | 2009-02-25 | |||
| CN2829174Y | 2006-10-18 |
Attorney, Agent or Firm:
SHENZHEN CENTURY-FOREVER INTELLECTUAL PROPERTY OFFICE (CN)
深圳市世纪恒程知识产权代理事务所 (CN)
深圳市世纪恒程知识产权代理事务所 (CN)
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Claims: