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JN22-40.5 Middle voltage earth switch
Product Description JN22-40.5/31.5 Indoor HV Earthing Switch is used for 3 phase rated voltage 40.5kV, AC 50Hz power system , high voltage switchgear with KYN61-405, high voltage electrical equipment maintenance as the use of ground fault protection.
Published in2018-08-20
2119 ViewsDetailed description
Product Description
JN22-40.5/31.5 Indoor HV Earthing Switch is used for 3 phase rated voltage 40.5kV, AC 50Hz power system , high voltage switchgear with KYN61-405, high voltage electrical equipment maintenance as the use of ground fault protection. The switch conforms to the national standard GB1985-2004 " AC high voltage disconnectors and earthing switches" and IEC62271-102.
- Altitude: ≤1000m
- Relative humidity: monthly average ≤90%; daily average: ≤95%
- Earthquake intensity: ≤8 degree
Environment condition
- Ambient temperature: -25ºC~+40ºC- Altitude: ≤1000m
- Relative humidity: monthly average ≤90%; daily average: ≤95%
- Earthquake intensity: ≤8 degree
Technical Data
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Rated voltage (kV)
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35
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Max. voltage (kV)
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40.5
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Rated short-time withstand current (thermal stability) (kA)
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31.5
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4
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Rated short-circuit making current (kA)
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80
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Rated peak withstand current (dynamic stability) (kA)
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80
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Inter-pole center distance (mm)
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350, 400
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Rated insulation level
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1min.PF withstand voltage (kV)
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95
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Lightning impulse withstand voltage (kV)
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185
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Outline Dimension
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