500 kV polymer station post insulator

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.

500 KV polymer staion post insulator
insulator molding injection machine

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