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      接触器用真空灭弧室
      HVJ3-7.2/400(630)

      HVJ3-7.2/400(630) vacuum interrupter for vacuum contactor

      1. 主要技术参数 Main technique parameter

      No.

      参数名称 Parameter name

      单位 Unit

      数值 Value

      1.

      额定电压 Rated voltage

      KV

      7.2

      2.

      额定电流 Rated current

      A

      400/630

      3.

      额定频率 Rated frequency

      Hz

      50

      4.

      额定接通电流 Rated making current

      KA

      4/6.3

      5.

      额定分断电流 Rated breaking current

      KA

      3.2/5.04

      6.

      极限分断电流 Limiting breaking current

      KA

      4/6.3

      7.

      额定短时耐受电流 Rated short time withstand current

      KA

      3.2/5.04

      8.

      额定短时工频耐压 Rated short time power frequency withstand voltage (1 minute)

      KV

      32

      9.

      额定雷电冲击耐受电压Rated lightning impulse withstand voltage

      KV

      60

      11.

      电寿命 Electrical life

      104

      Operations

      25

      12.

      机械寿命 Mechanical life

      104

       Operations

      50

      13.

      触头自闭力 Automatic closing force of the contacts

      N

      70±20

      14.

      额定开距时的触头反力 Force required to hold the contacts opening at full stroke

      N

      100±30

      15.

      触头自闭力下的回路电阻 Circuit resistance under minimum contacts force

      μΩ

      80

      16.

      触头允许磨损厚度 Limiting abrasion thickness of the contacts

      mm

      3

      17.

      允许储存期Storage life

      Years

      20

      18.

      内部气体压力 Internal gas pressure

      Pa

      ≤1.33×10-3

       

      2. 配用接触器的机械参数 Vacuum contactor technical specifications

      No.

      项目 Items

      单位 Unit

      数值 Value

      1.

      触头开距 Clearance between opening contacts

      mm

      5±1

      2.

      触头接触行程 Contacts travel

      mm

      2±0.5

      3.

      平均分闸速度 Average opening speed

      m/s

      0.3±0.1

      4.

      平均合闸速度 Average closing speed

      m/s

      0.6±0.2

      5.

      额定触头压力 Rated contacts pressure

      N

      100±20

      6.

      触头合闸弹跳时间 Contacts bouncing duration at closing operation

      ms

       2

      7.

      合闸同期性 Closing synchronism

      ms

       2

      8.

      分闸触头反弹幅值 Contacts re-bouncing clearance at opening operation

      mm

       1.5

       


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