Title:
POWER SUPPLY SYSTEM, AND MULTI-STAGE PROTECTION DEVICE FOR SAME
Document Type and Number:
WIPO Patent Application WO/2018/214189
Kind Code:
A1
Abstract:
The present invention relates to the technical field of safe power supply, and particularly relates to a power supply system, and multi-stage protection device for the same. The multi-stage protection device comprises a cut-out relay and multiple protection relays. The protection relays have an output end connected to a control coil of the cut-out relay in series, and one of the protection relays have a control coil connected to a protection mechanism (1) in series. The protection mechanism (1) is configured to detect operation of a powered network, and control, upon a failure of the powered network and by means of the protection relays, an output end of the cut-out relay to cut power supply to a bus of the powered network. The present invention solves the technical problem in which detection of a potential danger of a powered network and a corresponding measure are not performed in a timely manner, and provides the technical effect of improving safety of a powered network.
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Inventors:
MA JIAN (CN)
MA JI (CN)
MA JI (CN)
Application Number:
PCT/CN2017/088961
Publication Date:
November 29, 2018
Filing Date:
June 19, 2017
Export Citation:
Assignee:
TIANJIN ZHONGLING SHINENG TECH CO LTD (CN)
International Classes:
H02H7/28
Foreign References:
| CN206742850U | 2017-12-12 | |||
| CN106655133A | 2017-05-10 | |||
| CN106711922A | 2017-05-24 | |||
| CN106711923A | 2017-05-24 | |||
| CN103901313A | 2014-07-02 | |||
| CN102638037A | 2012-08-15 |
Attorney, Agent or Firm:
CHOFN INTELLECTUAL PROPERTY (CN)
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