ZS-Solid Core Post Insulators;ZSX-Catanary Post Insulators;C-Operation Post Insulators;W-Anti-polusi Tipe;Numerator after frist"-"-Rated Voltage;Denominator-Catilever Failing Load;N-Torsion Failing Load;L- Ngisor lan Top Fittings kabeh karo Screw Lubuk;Data sawise kapindho"-"-Kelas Tingkat Polusi.