Station Class Metal-Oxide Surge Arrester:
1.Metal-oxide surge arrester provides the most advanced protection
against over-voltage in the world,since MOA' resistors are made up
of zinc oxide films.
2.MOA has a good voltage-ampere characteristics as compared with
silicone carbide arrester,its volt/ampere characteristic is much
superior and results in much better performance.
3.A micro ampere level current flows while MOA is operating under
normal voltage,but the amount of the current will be thousands
amperes when MOA is subjected to over-voltage,because of MOA has a
good non-linear characteristics,Hence MOA provide excellent
protection for the HV equipment,especially the transformer,cables
and switchgear.
Working Conditions:
1.Ambient temperature:-40degrees to +40degrees
2.Height about sea level:<=1000m
3.Power supply frequency:48-62HZ
4.Earthquake intensity:Not exceed richter 7.0 grade
5.Maximum wind veiocity:<=35m/s
6.The long-term power running voltage should not over the continus
operating voltage
7.The altiplano or contaminated area should be indicated