Overview Composite post insulators for a variety of areas, especially dirty, heavy dirty areas. These products high bending strength, good antifouling performance, excellent seismic, impact resistance and anti-brittle fracture performance, small size, light weight, easy to install collision-resistant. Maintenance manual cleaning can be replaced with porcelain pillars. Model Description Technical Data Sheet Specifications Model Rated voltage kV Rated bending load kN structural height (mm) ± 10 insulation distance (mm) minimum nominal creepage distance (mm) full-wave lightning impulse withstand voltage kVp 1 min power frequency wet withstand voltage kV FZSW4-10 / 4 10 4 215 ± 10 140 311 75 42 FZSW4-20 / 6 20 6 260 ± 10 195 470 150 65 FZSW4-35 / 6 35 6 450 ± 10 378 926 185 95 FZSW4-35 / 8 35 8 450 ± 10 380 966 185 95 FZSW4-66 / 6 66 6 760 ± 10 634 1890 410 185 FZSW4-66 / 8 66 8 760 ± 10 630 2020 410 185 FZSW4-110 / 8 110 8 1220 ± 15 1070 3988 550 230 FZSW4-110 / 10 110 10 1140 ± 15 1030 3988 550 230 FZSW4-220 / 8 220 8 2260 ± 20 2200 7800 1050 395