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  • JN22-40.5-31.5

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

Model: JN22-40.5/31.5


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.

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    Use epoxy resin insulators, conductive parts made of silver-plated electrolytic copper(99.9%).

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    The blades are directly connected to the drive shaft. Contact elements are overdimensioned according to the requirements in order to guarantee, together with a high contact pressure between blades and contacts, a reduced ohmic resistance at the contact surface and a minimum metal wear-off during the life of the grounding switch, with the necessary robustness to withstand thermal and mechanical stresses under short-circuit conditions.

  • Technical Parameter
  • Drawing
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 Indoor AC High Voltage Earthing switch drawing

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