JUCA-40.5/2000-31.5 (JUC61070)

主要技术参数MainTechnicalParameters

项⽬ Items	数值 Value
额定电压 Rated voltage	40.5kV
额定电流 Rated current	2000A
额定频率 Rated frequency	50Hz
额定短时⼯频耐受电压(1min) Rated power frequency withstand voltage	95kV
额定雷电冲击耐受电压 Rated lightning impulse withstand voltage	185kV
额定短路开断电流 Rated short circuit breaking current	31.5kA
额定短路关合电流(峰值) Rated short circuit making current(peak value)	80kA
额定短路开断电流开断次数 Breaking operations under rated short circuit breaking current	30 times
额定短时耐受电流(4秒) Rated short time withstand current(4s)	31.5kA
额定峰值耐受电流(峰值) Rated withstand current(peak value)	80kA
额定短路持续时间 Rated duration of short circuit	4s
机械寿命 Mechanical life	20000 times
触头⾃闭⼒ Closing force due to bellows and atmosphere	200±60N
额定开距下触头反⼒ Force required to hold contaCTs opening at full stroke	300±60N
额定触头压⼒下限时的回路电阻 Circuit resistance at lowest rated contacts force	≤20μΩ
贮存期 Storage life	20 years
触头允许磨损厚度 Limiting abrasion of contacts	3mm
运动部分质量 Weight of moveable parts	3.5kg

配⽤的真空断路器的机械参数Mechanicalrequirementsofvacuumcircuitbreaker

项⽬ Items	数值 Value
触头开距 Clearance between opening contacts	19±1mm
平均分闸速度 Average opening speed	1.7±0.3 m/s
平均合闸速度 Average closing speed	1±0.2 m/s
额定触头压⼒ Rated contacts pressure	3600±300N
触头合闸弹跳时间 Contacts bouncing duration at closing operation	≤3ms
触头分闸反弹幅值 Contacts re-bouncing clearance at opening operation	≤3mm
三相同期性 Synchronism of three phases	≤2ms