FZW □ -72.5/1250-25 series outdoor HV disconnect vacuum load break switch is a newest product which is designed and manufactured according to the domestic existing mature production experience and overseas advanced technology. The switch is composed of disconnect blade, vacuum arc-extinguishing chamber and operation mechanism. The product has the advantages of strong arc-extinguishing capacity, reliable performance, long lifetime, small size, non-explosive danger and nonpollution. With the matching vacuum load switch, it can be widely used in the distribution systems of electric power, metallurgy, mine and chemical industry to control equipments, and is especially suitable for the frequent operation sites. The product accords with the standard of IEC-62271-103.
1. Altitude: ≤ 2000m
2. Ambient temperature: -30℃ ~+40℃ diurnal temperature range ≤ 32K
3. wind speed: ≤ 35m/s
4. Pollution degree: ≤Ⅳ
5. Earthquake intensity: ≤ 8 grade
6. Ice thickness: ≤ 10mm