ZS, ZSK, ZSW series outdoor rod type post insulators (hereinafter referred to as insulators) are suitable for insulation and support of conductive parts on power equipment and devices operating in AC systems with rated voltage (10-35) kV and frequency not exceeding 100Hz.

Product model and meaning

ZS - Solid Rod shaped Ceramic Insulators
ZSK - Solid rod shaped post insulator for suspended installation
W - Pollution resistant type
The number after the letter is the design sequence number; The number after the short horizontal line: the numerator is the rated voltage in kilovolts, and the denominator is the bending failure load in kilonewtons; The letter L behind it indicates that both the upper and lower attachment mounting holes are screw holes
Product manufacturing basis
GB8287 Technical Conditions for High Voltage Post Ceramic Insulators

Environmental conditions for product use
The ambient temperature is not higher than+40 ℃ and not lower than -40 ℃
Altitude not exceeding 1000m
Wind speed not exceeding 34m/s
Ordinary type is used in places where there is no serious air pollution, chemical corrosion, flammability, explosiveness, or severe vibration;
According to the degree of air pollution in the product's usage environment, the anti fouling type is divided into four levels according to GB5582: Level I, Level II, Level III, Level IV, etc
No frequent and intense vibrations

ZS, ZSK, ZSW series outdoor rod type post insulators