TD-24/1250-20C (JUC2373)

额定电压

Rated voltage

24kV

额定电流

Rated current

1250A

额定频率

Rated frequency

50/60Hz

额定短时⼯频耐受电压(1min) Rated power frequency withstand voltage

*50/65kV

额定雷电冲击耐受电压（峰值）

Rated lightning impulse withstand voltage(peak value)

*125kV

额定短路开断电流

Rated short circuit breaking current

20kA

额定短路开断电流开断次数

Breaking operations under rated short circuit breaking current

30 times

最⼤直流分量

Max.DC-component

50%

额定短路关合电流

Rated short circuit making current

50kA

额定峰值耐受电流

Rated withstand current(peak value)

50kA

额定短时耐受电流（4秒）

Rated short time withstand current (4s)

20kA

额定单个电容器组开断电流

Rated breaking current of single capacitor bank

※630A

额定背对背电容器开断电流

Rated breaking current of back to back capacitor bank

※400A

额定触头压⼒下限时的回路电阻

Circuit resistance at lowest rated contaCTs force

≤18μΩ

机械寿命

Mechanical life

10000 times

触头⾃闭⼒

Closing force due to bellows and atmosphere

100±40N

额定开距下触头反⼒

Force required to hold contacts opening at full stroke

190±40N

触头允许磨损厚度

Limiting abrasion of contacts

3mm

贮存期

Storage life

20 years

运动部分的质量

Mass of moving parts

0.9kg

内部⽓体压⼒

Internal pressure

^<1.33×10-3

额定操作顺序

Rated operating sequence

0-0.3s-CO-180s-CO

平均分闸速度(0-6mm触头⾏程)

Average opening speed(0-6mm stroke)

1.4±0.2 m/s

平均合闸速度(6mm-触头闭合)

Average closing speed(6mm-contact making)

0.8±0.2 m/s

触头合闸弹跳时间

Contacts bouncing duration at closing operation

≤2ms

触头分合闸不同期

Out of simultaneity of contact closing and opening

≤1ms

额定触头压⼒

Rated contacts pressure

1800⁺³⁰⁰ N

0

触头初压⼒

Added external contact force at contact touch point

1300⁺²¹⁰ N

0

触头最⼤分闸反弹量

Max. rebound of contact at opening operation

2mm

分闸触头过冲幅值

Synchronism of three phases

≤2mm