220KV composite line post insulator
Rated Voltage: 220 kV
Specified Mechnical Load: 120 kN
Standard: IEC 61952
Brief Introduction
The 220kV post type horizontal insulators are made of high-grade by Chinese composite line post insulators manufacturer Xiangyang Guowang, HTV silicone rubber, suitable for the pole or tower of power grid.
The 220kV post type horizontal insulators consisting of a load-bearing cylindrical insulating solid core, a housing and end fittings attached to the insulating core. It is intended to be subjected to cantilever, tensile and compressive loads.
Eed-fittings are made of ductile iron. And all ferrous parts, except stainless steel and aluminium shall be galvanized. And Integral component or formed part of an insulator intended to connect it to a supporting. The top clamp for the conductor to be used for the transmission line are made of aluminium alloy.
Parameters
| Parameter | Unit | Value | |
|---|---|---|---|
| Model | LP3-230/12.5HC | ||
| Country or original | China | ||
| Rated voltage | kV | 220 | |
| Max. voltage | kV | 245 | |
| Standard | IEC 61952 | ||
| Material | HTV Silicone Rubber | ||
| Core rod diameter | mm | 80 | |
| Minimum creepage Line | mm | 7200 | |
| Specified Cantilever Load(SCL) | kN | 12.5 | |
| Max. Designed Cantilever Load(MDCL) | kN | 6.5 | |
| Power frequency withstand voltage, dry | kV | 520 | |
| Power frequency flashover voltage, dry | kV | 600 | |
| Power frequency withstand voltage, wet | kV | 460 | |
| Power frequency flashover voltage, wet | kV | 580 | |
| Lightning impulse withstand voltage, positive | kV | 1050 | |
| Lightning impulse falshover voltage, positive | kV | 1100 | |
| Lightning impulse withstand voltage,negative | kV | 1100 | |
| Lightning impulse falshover voltage,negative | kV | 1030 | |
| Maximum RIV at 1M Hz | dB | 80 | |
| Minimum dry arcing distance | mm | 1890 | |