真空开关管(12KV/5000(风冷),4000A-50KA)型主要技术参数MAIN TECHNICA DATA额定电压Rated voltage 12KV短时(1min)工频耐受电压Short-time(1min) power-frequency withstand voltage 49KV额定电流Rated current 5000（风冷）4000A雷电冲击耐受电压(峰值) Lighting impulse withstand voltage(peak) 85KV额定频率Rated frequency 50HZ额定触头压力下的回路电阻Circuit resistance at rated contact force≤10μΩ额定短路开断电流Rated short-circuit breaking current 50KA机械寿命Mechanical life 20,000次额定短路开断电流开断次数Operations of short-circuit breaking current interruption 30次触头自闭力Contact closing force due to bellows and atmosphere 210±60N额定短路关合电流Rated short-circuit making current 125KA额定开距下的触头反力Counterforce at rated contact stroke 350±60N额定峰值耐受电流Rated peak withstand current 125KA触头允许磨损厚度Contact limit erosion 3mm额定短时耐受电流(4秒) Rated short-time withstand current(4s) 50KA贮存期Shelf life 20年额定单个电容器组开断电流Rated single capacitor bank breaking current 630A质量/动触头质量Weight/mass of moving parts 9.1Kg / 3Kg额定背对背电容器组开断电流Rated back-to-back capacitor breaking current 400A额定操作顺序Rated operating sequence O-180s-CO-180s-CO配套的真空开关应满足的机械参数MECHANICAL DATA OF CIRCUIT-BREAKING EQUIPPED WITH THE INTERRUPTERS触头开距Rated contact stroke 11±1mm额定触头压力Rated operation pressure of contact 6700±300N触头接触行程Contact connection stroke 4±1mm触头合闸弹跳时间Bounce duration of contact closing≤2ms平均分闸速度Average opening speed 1.4±0.2m /s触头分合闸不同期Out of simultaneity of contact closing and opening≤1ms平均合闸速度Average closing speed 0.8±0.2m /s分闸触头反弹幅值Max. overtravel≤2mm