Line Post Porcelain Insulators are suitable for insulating and supporting conductors in AC overhead power lines with frequency not higher than 100 Hz, and can be used to replace pin insulators for insulating and conducting on lines to improve the pollution resistance and mechanical strength.

The Line Post Porcelain Insulators produced by our company follow the American standards ANSIC29.7 Wet Process Porcelain Insulators (High Voltage Line Post Type), i.e., 57 series products and national standard GB/T 21206-2007 Characteristics of Line Post Insulators", i.e., R(PS) series products.

Main dimensions and properties

Model description: 1.57- American standard line post porcelain insulator, the number behind it is the serial number of product, 1 refers to the smallest structure and creep distance, L refers to long steel leg and S refers to short steel leg;

Main dimensions and properties

Model description: R-national standard line post porcelain insulator, the number behind it indicates the bending failure load kN, ET refers to the top binding type with external adhesive, and the suffix number indicates the specified peak lightning impulse withstand voltage kV; L refers to long creep distance, and N refers to standard creep distance.

PS-previous national standard line post porcelain insulator, PSN refers to the line post porcelain insulator with long creep distance according to the previous national standard, the number behind the dash is rated lightning impulse withstand voltage kV, followed by Z for vertical installation and S for threaded connection.