JN15 12 kv series indoor high voltage earthing switch

  1.  Introduction

JN15 12 kv series indoor high voltage earthing switch is a compositional type, and the technical parameters is corresponding to the requirements of IEC62271-102:2002. It is applicable for three-phase power system of 3-12kv, AC 50HZ. It can be used together with many types high voltage switchgear as a earthing protection unit.

 

  1.  Applicable environment
    1.  Altitude should not exceed 1000 m
    2.  The ambient temperature: -25℃~ +40℃
    3.  The seismic intensity should not exceed 8 degree.
    4.  Relative humidity should not exceed 95%, monthly average value should not exceed 90%.
    5.  Pollution degree: Ⅱ

 

Main technical parameters

Rated voltage: 12 kv

Rated short-time withstand current: 31.5 KA

Rated short-circuit duration time: 4 s

Rated making current: 80KA

Rated withstand current(peak value): 80KA

Pole to pole distance: 150 mm, 210 mm, 230 mm, 250 mm, 275 mm

Power frequency withstand voltage(1 minute) To earth, phase to phase: 42 kv, 48 kv




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