智能框架断路器用触头材料

详细信息

CONTACT MATERIALS FOR INTELLIGENT FRAME CIRCUIT BREAKER

摘要: 论述了应用于我国最新设计制造的智能框架断路器上的触头材料工艺研究试验。通过大量试验,制成了高性能预烧钨骨架银钨触头和银镍石墨触头。经大电流电弧烧损和电磨损模拟试验,确定了较佳的动静触头品种。经装机型式试验证明,采用AgW50/AgNi25C2非对称配对触头,满足了断路器的各项性能指标。短路分断能力达380V,65kA;660V,50kA。并具有显著的节银效果。
- 烧结触头材料 /
- 银钨基触头材料 /
- 断路器
Abstract: Technoloyg research and test of contact materials used for the intelligent frame circuit breakernewly designed by our country. The silver-tungsten and silver-nickel graphite concocts with high properties pre-sintered tungsten skeleton have been made through a lot of experiments. After high currentarc burning loss and electric erosion model tests,better dynamic and static varieties have been decided.It has been proved by trial running type experiments that asymmetry paired contacts of AgW50/Ag-Ni25C2 can meet various property targets of circuit. The limited short circuity breaking capacityreached 380V, 65kA; 660V, 50kA with obvious energy-saving results.
- sintered electric contact material /
- silver-tungsten based contact material /
- circuit breaker