国内外高压隔离开关的发展现状与趋势

目前,国外还有些产品制造商在隔离开关的静触头处加装电阻器,以便分合闸时使电路串入电阻,由此来控制切合小电流可能产生的操作过电压,提高产品品质。对要求有开合感应电流能力的接地开关,还加装灭弧装置以提高其开断能力。为了适应这些要求,目前高压隔离开关正朝着高电压、大容量、高机械可靠性、少维护、小型化、组合化方向发展。

The condition and trend for development of the high voltage isolator at home and abroad

At present, some manufacturers of foreign lands install a resistor at fixed contact of an isolator to connect the circuit at the time of switching on and off for controlling possible operating overvoltage caused by switching low current, improving the quality of products. For the ground switch switching induced current, an arc control device is installed to improve its breaking capacity. To meet such requirements, the current high voltage isolator is being developed in the direction of high voltage, large capacity, high mechanical reliability, free maintenance, small size and combination.