ZS-Solid Core Post Insulators;ZSX-Catanary Post Insulators;C-Operation Post Insulators;W-Anti-pollution Type;Numerator after frist"-"-Rated Voltage;Denominator-Catilever Failing Load;N-Torsion Failing Load;L- Ang Bottom at Top Fitting ay lahat ay may Screw Hole;Data pagkatapos ng pangalawang"-"-Class of Pollution Level.
