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断路器用真空灭弧室
TD-12/630-25(JUC610)

TD-12/630-25(JUC610) 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

12KV

额定电流 

Rated current

630A

额定频率 

Rated frequency

50Hz

额定短时工频耐受电压(1min)

Rated power frequency withstand voltage

42kV

额定雷电冲击耐受电压

Rated lightning impulse withstand voltage

75kV

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

额定单个电容器组开断电流

Rated single capacitor bank breaking current

400A

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

70±40N

额定开距下触头反力

Force required to hold contacts opening at full stroke

120±50N

额定触头压力下限时的回路电阻

Circuit resistance at minimum contacts force

25μΩ

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 moving parts

0.7kg

Model No.: TD-12/630-25(JUC610)

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

9±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)

1.0±0.25 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)

0.65±0.15 m/s

额定触头压力

Rated contacts pressure

1300/1600±100N

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