TY - GEN
T1 - A new automated test equipment for measuring electrical contact resistance of real size rivets
AU - Ren, Wanbin
AU - Chen, Yu
AU - Cao, Sheng
AU - Cui, Li
AU - Liang, Huimin
PY - 2013
Y1 - 2013
N2 - It is well known that electrical contact resistance influencing factors include not only the contact material physical characteristics, contact type (sphere-flat, flat-flat), the contact surface status (clean, contaminated), but also contact current and mechanical load during measuring. Electrical contact material industry has considerable trouble with batch consistency check of rivet contacts. An automated test equipment and a test method have been described that make it possible to measure the electrical contact resistance of many real size rivet-type contacts with shank diameters 14mm at small contact loads with high efficiency. A stainless steel hemisphere with gold coating is designed as standard indenter; meanwhile the alternative choice would be the sphere-flat, flat-flat and sphere-sphere rivet contact pairs. Firstly, the voltage vs. current characteristics of AgCdO rivets is tested under different constant contact force. Secondly, the relationship between contact load and contact resistance during loading and unloading is investigated explicitly with different current. Furthermore, the effect of surface roughness and cleanness on the contact resistance is analyzed by comparison with normal and polished rivets, and those of long term exposure to the air. This equipment can be used for finding out the contact resistance consistency of batch contacts effectively for statistics analysis. But it also helps for the research work on the affecting factors of electrical contact resistance of stationary contacts.
AB - It is well known that electrical contact resistance influencing factors include not only the contact material physical characteristics, contact type (sphere-flat, flat-flat), the contact surface status (clean, contaminated), but also contact current and mechanical load during measuring. Electrical contact material industry has considerable trouble with batch consistency check of rivet contacts. An automated test equipment and a test method have been described that make it possible to measure the electrical contact resistance of many real size rivet-type contacts with shank diameters 14mm at small contact loads with high efficiency. A stainless steel hemisphere with gold coating is designed as standard indenter; meanwhile the alternative choice would be the sphere-flat, flat-flat and sphere-sphere rivet contact pairs. Firstly, the voltage vs. current characteristics of AgCdO rivets is tested under different constant contact force. Secondly, the relationship between contact load and contact resistance during loading and unloading is investigated explicitly with different current. Furthermore, the effect of surface roughness and cleanness on the contact resistance is analyzed by comparison with normal and polished rivets, and those of long term exposure to the air. This equipment can be used for finding out the contact resistance consistency of batch contacts effectively for statistics analysis. But it also helps for the research work on the affecting factors of electrical contact resistance of stationary contacts.
UR - https://www.scopus.com/pages/publications/84891139625
U2 - 10.1109/HOLM.2013.6651396
DO - 10.1109/HOLM.2013.6651396
M3 - 会议稿件
AN - SCOPUS:84891139625
SN - 9781467352819
T3 - Proceedings of the 59th IEEE Holm Conference on Electrical Contacts, HOLM 2013
BT - Proceedings of the 59th IEEE Holm Conference on Electrical Contacts, HOLM 2013
T2 - 59th IEEE Holm Conference on Electrical Contacts, HOLM 2013
Y2 - 22 September 2013 through 25 September 2013
ER -