... electricity life long, the full capacity opens breaks 20 time does not overhaul, the insulation reliably, the structure is simple, the ... be equal to wind speed 35m/S);4th, earthquake intensity:Does not surpass 8;5th, contamination rank:III level, IV level ... , 31.5mm/KV)6th, installs the place: Does not have the fire explosion hazard, does not have chemistry corrosion and the regular fierce vibration ...