JN15-24/31.5 series indoor earthing switch is a new design and improved in the Jnl5 typejthe installing size without any changeLsuitable with electric power system with 20-24KVJhree-phase, AC 50(60)Hz, support with various kind of HV switchgear and as earthing protection. GB1985-2004 ac vexillum IEC129 impletum est.
operantes conditio
1. Temperatura ambiens -10X ~ +40°C
2.Altitude： W 1000m
3.Relative humidity "Dies mediocris relativa humiditas w XCV%"
Mediocris mensis humiditas relativa w 90沧
4.Earth motus intensionis w 8degree；
5. Genus pollutionis II
