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地址:中国 湖北 枝江市 仙女四路
电话:86 717 4209228
86 717 4209218
传真:86 717 4209218
邮箱:info@jucro.com
地址:中国 湖北 枝江市 仙女四路
TD-24/1250-25(JUC619B) vacuum interrupter for circuit breaker
主要项目的技术参数 Main technical parameters
Items | Value |
额定电压 Rated voltage | 24KV |
额定电流 Rated current | 1250A |
额定频率 Rated frequency | 50Hz |
额定短时工频耐受电压(1min)* Rated power frequency withstand voltage | 79kV |
额定雷电冲击耐受电压(峰值)* Rated lightning impulse withstand voltage(Peak value) | 145kV |
额定短路开断电流 Rated short circuit breaking current | 25KA |
额定短路关合电流(峰值) Rated short circuit making current(peak value) | 63KA |
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 Rated short time withstand current | 25kA |
额定峰值耐受电流 Rated withstand current(peak value) | 63kA |
额定短路持续时间 Rated duration of short circuit | 4s |
机械寿命 Mechanical life | 10000 times |
触头自闭力 Closing force due to bellows and atmosphere | 120±50N |
额定开距下触头反力 Force required to hold contacts opening at full stroke | 190±50N |
额定触头压力下限时的回路电阻 Circuit resistance at minimum contacts force | ≤20μΩ |
贮存期 Storage life | 20 years |
触头允许磨损厚度 Limiting abrasion of contacts | 3mm |
Model No.: TD-24/1250-25(JUC619B)
配用的真空断路器的机械参数 Mechanical requirements of vacuum circuit breaker
Items | Value |
触头开距 Clearance between opening contacts | 13±1mm |
平均分闸速度(触头闭合位置~75%开距) Average opening speed(Contacts closing position~75% contacts opening distance) | 1.3±0.2 m/s |
平均合闸速度(30%开距~触头闭合位置) Average closing speed(30% contacts opening distance~contacts closing position) | 0.7±0.2 m/s |
额定触头压力 Rated contacts pressure | 2500±200N |
触头合闸弹跳时间 Contacts bouncing duration at closing operation | ≤2ms |
触头分闸反弹幅值 Contacts re-bouncing clearance at opening operation | ≤2mm |
三相同期性 Synchronism of three phases | ≤1ms |
Remarks:
1. * 需外绝缘保护。
* It Needs additional insultating protection.