500 kV polymer station post insulator
Rated Voltage: 500 kV
Specified Mechnical Load: 5 kN
Standard: IEC
Maximum Design Cantilever Load (MDCL)
MDC is the maximum recommended load in cantilever that a GW post insulator is designed to withstand during its service life.
Molding Injection Process
compare with compression molding way, injection type insulators molding will make the thickness of insulator's housing more balance, which can get a much higher quality products. Also the injection machine is equipted with cold runner system, which will make the rubber the keep in melting status, during flowing inside the mold.
Parameters of 500 kV polymer staion post insulator
Parameter | Unit | Value | |
---|---|---|---|
Model | LP3-500/5HD | LP4-500/5HD | |
Country or original | China | China | |
Max. voltage | kV | 525 | 525 |
Standard | IEC | IEC | |
Material | HTV Silicone Rubber | HTV Silicone Rubber | |
Core rod diameter | mm | 80 | 90 |
Minimum creepage Line | mm | 13200 | 13200 |
Specified Cantilever Load(SCL) | kN | 5 | 5 |
Max. Design Cantilever Load(MDCL) | kN | 2.5 | 2.5 |
Power frequency withstand voltage, dry | kV | 850 | 850 |
Power frequency flashover voltage, dry | kV | 950 | 950 |
Power frequency withstand voltage, wet | kV | 800 | 800 |
Power frequency flashover voltage, wet | kV | 900 | 900 |
Lightning impulse withstand voltage, positive | kV | 1900 | 1900 |
Lightning impulse falshover voltage, positive | kV | 1980 | 1980 |
Lightning impulse withstand voltage,negative | kV | 1950 | 1950 |
Lightning impulse falshover voltage,negative | kV | 2100 | 2100 |
Maximum RIV at 1M Hz | dB | 100 | 100 |
Minimum dry arcing distance | mm | 3500 | 3500 |