Invention Publication
EP2879152A1 Relay welding detector, relay equipment incorporating the same, and relay welding detecting method
有权
Relaisschweißdetektor，Relaisausrüstungdamit和undRelaisschweißdetektionsverfahren
- Patent Title: Relay welding detector, relay equipment incorporating the same, and relay welding detecting method
- Patent Title (中): Relaisschweißdetektor，Relaisausrüstungdamit和undRelaisschweißdetektionsverfahren
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Application No.: EP14150045.4Application Date: 2014-01-02
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Publication No.: EP2879152A1Publication Date: 2015-06-03
- Inventor: Wu, Zhi-Feng
- Applicant: Lite-On Technology Corporation
- Applicant Address: 22F., No. 392, Ruey Kuang Road Neihu, Taipei 11492 Taiwan TW
- Assignee: Lite-On Technology Corporation
- Current Assignee: Lite-On Technology Corporation
- Current Assignee Address: 22F., No. 392, Ruey Kuang Road Neihu, Taipei 11492 Taiwan TW
- Agency: Zimmermann, Tankred Klaus
- Priority: TW102143462 20131128; TW102222321 20131128
- Main IPC: H01H47/00
- IPC: H01H47/00 ; H02P29/02
Abstract:
A relay welding detector (72) is adapted for detecting welding fault of a relay (71). The relay (71) has a first electrical contact (711) coupled to a neutral terminal (N) of an alternating current (AC) power source (6) through a first power line (91), and a second electrical contact (712) coupled to a load (8) through a second power line (92). The relay welding detector (72) includes a signal generator (721) generating a test signal, a current transformer (722) wound with a portion of one of the power lines (91, 92) and generating an induced signal based on the test signal, and a determining unit (723) determining, based on the induced signal, whether the electrical contacts (711, 712) of the relay (71) are welded to each other.
Public/Granted literature
- EP2879152B1 Relay welding detector, relay equipment incorporating the same, and relay welding detecting method Public/Granted day:2018-06-27
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