Title:
DC HIGH VOLTAGE RELAY AND CONTACT MATERIAL FOR DC HIGH VOLTAGE RELAY
Document Type and Number:
WIPO Patent Application WO/2019/176891
Kind Code:
A1
Abstract:
The present invention pertains to a DC high voltage relay having a rated voltage of at least 48 V, the DC high voltage relay comprising at least one contact pair composed of a movable contact and a fixed contact, wherein the contact force and/or the opening force of the contact pair are at least 100 gf. The movable contact and/or the fixed contact are formed of an Ag oxide-based contact material. Metal components of the contact material are composed of at least one type of metal M including at least Sn, with the remainder comprising Ag and inevitable metal impurities. The content of metal M with respect to the total mass of all metal components in the contact material is 0.2-8 mass%. The contact material has a material structure in which at least one oxide of metal M is dispersed in an Ag or Ag alloy matrix. In, Bi, Ni, and Te may also be added in addition to Sn as metal M of the contact material.
Inventors:
NISHIDE SACHIHIRO (JP)
NAKAMURA TETSUYA (JP)
ITAKURA HIROYUKI (JP)
YANAGIHARA NOBUHITO (JP)
NAKAMURA TETSUYA (JP)
ITAKURA HIROYUKI (JP)
YANAGIHARA NOBUHITO (JP)
Application Number:
PCT/JP2019/009841
Publication Date:
September 19, 2019
Filing Date:
March 12, 2019
Export Citation:
Assignee:
TANAKA PRECIOUS METAL IND (JP)
International Classes:
H01H1/023; C22C1/10; C22C5/06; H01H50/54; C22F1/00; C22F1/14
Foreign References:
| JP2005294126A | 2005-10-20 | |||
| JPH08269640A | 1996-10-15 | |||
| JP2005120427A | 2005-05-12 |
Other References:
See also references of EP 3767656A4
Attorney, Agent or Firm:
TANAKA AND OKAZAKI (JP)
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