A.1500V,1800V B.1400V,1700V C.1300V,1600V D.1200V,1500V
A.0.01~90mm B.0.1~90mm C.1~90mm D.10~90mm
A.0.01%~0.005% B.0.01%~0.002% C.0.01%~0.001% D.0.01%~0.0005%