12-40.5 kV outdoor solid rod post insulator is suitable for outdoor power stations, substations and electrical equipment of AC power system with frequency not more than 100 Hz, and can be used for insulation and support of live parts.
The insulator should be installed in a place with ambient temperature from -40¡ãC to +40¡ãC and altitude not more than 1,000 m.
The insulator can be divided into two categories: ordinary type and pollution-resistant type, in which the pollution-resistant type can be applied to medium, heavy and extra-heavy pollution areas.

Main dimensions and properties
Model | Drawing No. | Rated voltage kV | Main dimensions mm | Creep distance mm | Dry withstand voltage under lightning full-wave impulse kV | Power frequency dry withstand voltage kV | Power frequency wet withstand voltage kV | Bending strength kN | Torsional load kN.m | Weight kg |
H | D | a1 | d1 | a2 | d2 |
|
|
ZS-12/4 | 1 | 12 | 210 | 145 | 36 | 2¡ÁM8 | 130 | 2¡Á¦µ12 | 200 | 75 | 25 | 40 | 4 | 1 | 4.2 |
ZSW-12/4 | 1 | 12 | 210 | 155 | 36 | 2¡ÁM8 | 130 | 2¡Á¦µ12 | 230 | 75 | 25 | 40 | 4 | 1 | 8 |
ZS-24/8 | 2 | 24 | 350 | 185 | 76 | 2¡ÁM12 | 180 | 4¡Á¦µ14 | 400 | 150 | 75 | 50 | 8 | 1 | 15 |
ZSW-24/8 | 2 | 24 | 350 | 180 | 76 | 2¡ÁM12 | 180 | 4¡Á¦µ14 | 480 | 150 | 75 | 50 | 8 | 1 | 18 |
ZS-24/10 | 4 | 24 | 350 | 185 | 140 | 4¡ÁM12 | 210 | 4¡Á¦µ18 | 480 | 150 | 75 | 50 | 10 | 1 | 20.5 |
ZSW-24/10 | 5 | 24 | 350 | 205 | 140 | 4¡ÁM12 | 210 | 4¡Á¦µ18 | 600 | 150 | 75 | 50 | 10 | 1 | 20 |
ZS-24/16 | 4 | 24 | 350 | 210 | 140 | 4¡ÁM12 | 210 | 4¡Á¦µ18 | 400 | 150 | 75 | 50 | 16 | 1 | 22 |
ZSW-24/16 | 5 | 24 | 350 | 215 | 140 | 4¡ÁM12 | 210 | 4¡Á¦µ18 | 480 | 150 | 75 | 50 | 16 | 1 | 26 |
ZS-24/30 | 4 | 24 | 400 | 210 | 140 | 4¡ÁM12 | 250 | 4¡Á¦µ18 | 400 | 150 | 75 | 50 | 30 | 1 | 34 |
ZSW-24/30 | 5 | 24 | 400 | 215 | 140 | 4¡ÁM12 | 250 | 4¡Á¦µ18 | 600 | 150 | 75 | 50 | 30 | 1 | 39 |
ZS-40.5/4 | 4 | 40.5 | 400 | 185 | 140 | 4¡ÁM12 | 140 | 4¡Á¦µ14 | 625 | 170 | 100 | 70 | 4 | 1 | 10.5 |
ZSW-40.5/4 | 5 | 40.5 | 550 | 230 | 140 | 4¡ÁM12 | 180 | 4¡Á¦µ14 | 1256 | 170 | 100 | 70 | 4 | 2 | 35 |
ZSW3-40.5/4 | 5 | 40.5 | 420 | 210 | 140 | 4¡ÁM12 | 180 | 4¡Á¦µ14 | 900 | 170 | 100 | 70 | 4 | 1 | 34 |
ZS-40.5/8 | 4 | 40.5 | 420 | 200 | 140 | 4¡ÁM12 | 180 | 4¡Á¦µ14 | 625 | 170 | 100 | 70 | 8 | 1.5 | 16 |
ZSW-40.5/6 | 5 | 40.5 | 550 | 230 | 140 | 4¡ÁM12 | 180 | 4¡Á¦µ14 | 1256 | 170 | 100 | 70 | 6 | 2 | 35 |
ZSW-40.5/6L | 3 | 40.5 | 500 | 220 | 140 | 4¡ÁM12 | 140 | 4¡ÁM12 | 1015 | 170 | 100 | 70 | 6 | 2 | 24 |
ZSW-40.5/8 | 5 | 40.5 | 550 | 238 | 140 | 4¡ÁM12 | 180 | 4¡Á¦µ14 | 1256 | 170 | 100 | 70 | 8 | 2 | 42 |
ZSW3-40.5/8L | 5 | 40.5 | 435 | 210 | 140 | 4¡ÁM12 | 140 | 4¡ÁM12 | 870 | 170 | 100 | 70 | 8 | 2 | 42 |
Model description: ZS refers to outdoor solid rod post porcelain insulator; ZSW refers to pollution-resistant outdoor solid rod post porcelain insulator; and the number following the model refers to the serial number of the design. For the fraction after the dash, the numerator refers to the rated voltage and the denominator refers to bending failure load and L means that the upper and lower fittings are screw holes.