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Patent Searching and Data


Title:
A ELECTROSHOCK PROTECTING SYSTEM FOR LONG-DISTANCE POWER SUPPLY AND THE ELECTROSHOCK PROTECTING METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2007/003087
Kind Code:
A1
Abstract:
A electroshock protecting system for long-distance power supply and the protecting method thereof. In order to solve the problem of high cost and easily causing error protection in the prior art that compares the current difference between the office side and the remote side to protect electroshock, the present invention provides the following solution: at the remote side, cuts off the input power after the input power of the remote load has been switched on for a predetermined switch-on-interval(Ton), and switches on the input power after being cut off for a predetermined cut-off-interval(Toff), and the following are the like; an energy storing circuit will provide temporary power for the remote load while the input power is being cut off. At the office side, the output current which is transmitted from the office side to the remote side is checked, and whether the output current is greater than the reference current during the input power has been cut off each time is determined, and if it is yes, the input power is cut off, otherwise the input power is kept switching on. The system and method of the present invention has the advantages of short reacting time of electroshock protecting, high accuracy of detection, extreme low implementation cost, simplicity and reliability.

Inventors:
TANG JIANHUA (CN)
XU JIANSHEN (CN)
ZHOU PINGSEN (CN)
HAO JIANWEI (CN)
Application Number:
CN2006/000758
Publication Date:
January 11, 2007
Filing Date:
April 21, 2006
Export Citation:
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Assignee:
EMERSON NETWORK POWER CO LTD (CN)
TANG JIANHUA (CN)
XU JIANSHEN (CN)
ZHOU PINGSEN (CN)
HAO JIANWEI (CN)
International Classes:
H04M19/00; H02H3/00; H02H5/00; H02M1/00
Foreign References:
CN1040117A1990-02-28
DE19823087A11999-11-25
RU2131161C11999-05-27
Attorney, Agent or Firm:
JEEKAI & PARTNERS (Suite 601, Jinyu Tower A12, West Xuan Wu Men Street Beijing 1, 100031, CN)
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