Home » Switching Devices »Earthing Switch » JN22-40.5/31.5 Indoor High Voltage Earth Switch in Switchgear
  • JN22-40.5-31.5-280 high speed earth switch
  • JN22-40.5-31.5-280 earth switch 35kV
JN22-40.5-31.5-280 high speed earth switch
JN22-40.5-31.5-280 earth switch 35kV

JN22-40.5/31.5 Indoor High Voltage Earth Switch in Switchgear

Model: JN22-40.5/31.5

Description

JN22-40.5/31.5 indoor AC high voltage earthing switch is an advanced level product with high-tech parameters performance. After comprehensive evaluation, it conforms to GB1985 AC HV disconnect switch and earthing switch, applies to power system of 40.5kV and AC 50Hz. Can be used with KYN61-40.5 and other types high voltage switchgear , also play a protective role in the high voltage electrical equipment overhaul.
  • Features
  • Technical Parameter
  • Drawing

JN22-40.5/31.5 earthing switch features

  • High-quality resin insulators ensure excellent insulation performance and safe operation.

  • Conductive parts are made of 99.9% silver-plated electrolytic copper, offering superior conductivity and stable contact.

  • Blade directly connected to the drive shaft, ensuring compact structure, reliable operation, and smooth movement.

  • Contact components are precisely designed to maintain high contact pressure between the blade and the contact, reducing resistance and improving performance.

  • Minimal metal wear, long service life, and reduced maintenance requirements.

  • Excellent thermal and mechanical strength, capable of withstanding thermal stress and electrodynamic force under short-circuit conditions.

Technical Parameter of JN22-40.5/31.5 Indoor High Voltage Earth Switch

Item Unit Data
Rated voltage kV 35
Maximum voltage kV 40.5
Rated short-time withstand current kA 31.5
Rated short-circuit duration s 4
Rated short-circuit making current kA 80
Rated peak withstand current kA 80
Phases center distance mm 280, 300, 350, 400
Rated insulation level PF withstand voltage(1 min) kV Phase to earth 95
Lightning impulse withstand voltage Phase to phase 185

JN22-40.5/31.5 earthing switch dimensions

JN22-40.5/31.5 Indoor AC High Voltage Earthing switch drawing

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