The welding tendency of CuCr contact materials in vacuum

Miao, B. F.; Zhang, Yan; He, Jianping; Liu, Guoxun; Wang, Wenbin; Li, Gang; Wang, Xiaojun

doi:10.1109/deiv.2010.5625754

Cited by 7 publications

(1 citation statement)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Some recent works to improve erosion or anti-welding properties are noteworthy [13,14]. Breaking performances are not yet satisfying, probably due to the difficulty to master impurities with such alternative processes.…”

Section: B Contact Materialsmentioning

confidence: 97%

Development of a new vacuum interrupter for disconnecting and breaking in a shielded and solid insulated switchgear

Nicolle

Schellekens

Henon

et al. 2012

2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV)

View full text Add to dashboard Cite

Compactness of switchgear can be reached using a shielded solid insulation technology. Thus the size and costs can be reduced and the substation installation becomes easier and more attractive for customers. Constraints are then reported on the design of Vacuum Circuit Breaker in order to fulfill the whole standard requirements. A new embedded Vacuum Interrupter was developed that complies with requirements related to partial discharges, thermal cycles, mechanical endurance, breaking performance and disconnecting dielectric withstand. Multi-physics simulations were widely used to match industrial and technical requirements of such a complex system. For instance, overmolding simulation is mandatory to ensure the material homogeneity, the suitability of stresses with thermal constraints and that there are no holes. Radial Magnetic Field contacts were used to get compactness, cost effectiveness and breaking capacity. Contact material was also selected in order to obtain the best compromise between breaking performance, anti-welding property and low erosion. Thus the E2 electrical endurance class and 50 full interruptions at 25kA/15kV were achieved with less than 0.8mm erosion. No degradation of power frequency dielectric performance across isolating distance was found after breaking tests. Finally, this vacuum interrupter complies with the circuit-breaker and the disconnector standards.

show abstract

Section: B Contact Materialsmentioning

confidence: 97%