Introduction

          JN15-12/31.5 series indoor earthing switch is a new design and improved product of our company according to the ES1 type, suitable with electric power system with 3- 12KV, Three-phase, AC 50(60)Hz, support with various kinds of HV switchgear and as earthing protection. It is manufactured comply with GB1985-2004 and IEC129 standard.

Working Condition

1.    Ambient temperature:-10~+40℃

2.    Altitude: ≤1000m (sensor height:140mm)

3.    Relative humidity: Day average relative humidity ≤95%

Month average relative humidity ≤90%

4.    Earthquake intensity: ≤8degree

5.    Dirtiness degree: II