High-voltage Disconnector

Updated: 2025-10-20

Product introduction

High-voltage Disconnector

  PIS series high-voltage disconnector is installed on the roof, high-voltage box or in-vehicle network side cabinet. Its main function is to optimize the operating conditions of high-voltage device in 25kV circuit. In the event of a high-voltage device fault, the disconnector can isolate the faulty part and maintain the operation of EMU, greatly reducing locomotive failure caused by such faults and ensuring the safe operation of rolling stock.

Application Scenario

Key technologies

  1.Four-linkage driving mechanism

  2.Electric field voltage balancing technology

Main technical parameters

Name

Content

Rated voltage

31.5 kV

Rated current

700 A

Ambient temperature

-40 ℃~+70 ℃

Peak withstand current

40 kA

Short-time withstand current

16 kA/1s

Working pressure

450~1000 kPa

Resistance of main circuit

≤300 μΩ

Mechanical service life

≥20000cycles