电器与能效管理技术Issue(4)：9-14,25,7.DOI:10.16628/j.cnki.2095-8188.2019.04.002
触头材料及环境气氛对高压直流触头侵蚀影响的试验研究
Experimental Study on Contact Erosion under Different Contact Materials and Surrounding Atmospheres in HVDC Relay
摘要
Abstract
The anti-erosion ability of contacts is an important factor that affects the electrical lifespan of high-voltage DC relays.Both the surrounding atmosphere and the contact material have an influence on this ability.Therefore, an experiment with CuW50, CuW60, AgW60 and Cu contacts was conducted under condition of 200～500 VDC/40～150 A and in 6 kinds of ambient gases such as N2 and CO2 etc.It can be concluded that:① The erosion of the contacts in different atmospheres is obviously different, and among all gases O2 led to the severest erosion and material transfer generally;② In most atmospheres, contacts mainly show a mass loss on the anode and a mass gain on the cathode;③ The erosion of AgW60 is the most of all materials.关键词
直流继电器/触头/气氛/材料/侵蚀Key words
DC relay/electrical contacts/atmosphere/materials/erosion分类
信息技术与安全科学引用本文复制引用
刘文轩,廖园,焦琳,柏小平,冯如信,李震彪..触头材料及环境气氛对高压直流触头侵蚀影响的试验研究[J].电器与能效管理技术,2019,(4):9-14,25,7.基金项目
国家自然科学基金项目 (51377062) （51377062）
