Post Insulators
Porcelain Post cylindrical Insulators, operating at 20/36 kV Voltage. Capable for outdoor installation.
The Insulators are manufactured according to the Technical Description TD – 82 and IEC – 60273, IEC – 60168.
The Insulators are used for bus support at the 30kV voltage level at the 400/150/30 kV air insulated ehv substations. They are manufactured by high quality porcelain and are brown colored.
All the metal components (bolts, nuts, and washers) are made of hot dip galvanized steel. The Insulators consist of 8 MI6 bolts that are used on the top and bottom fitting.
All the necessary metal components are included in the supply of the Insulators.
|
Ambient Temperature |
|
-250C to +450C |
|
Max. Altitude |
|
1.000 m |
|
Relative Humidity |
|
≤95 % |
|
Pollution Level |
|
Moderate to Heavy |
|
Wind Speed |
|
150 km/h |
|
Durability to Environmental Conditions |
|
Snow, Ice and Fogg |
|
|
|
C8 – 150 |
|
C8 - 250 |
|
Power Frequency Withstand Voltage, Wet |
|
50 kV |
|
95 kV rms |
|
Lightning Impulse Voltage Withstand |
|
150 kV |
|
250 kV peak |
|
Insulator Height |
|
355 mm ± 1 mm |
|
560mm ± 1 mm |
|
Creepage Distance |
|
660 mm |
|
1.200 mm |
|
Failing Load, Bending |
|
8.000 N |
|
8.000 Ν |
|
Failing Load, Torsion |
|
1.500 N |
|
2.500 Ν |
|
Failing Load, Εφελκυσμού |
|
|
|
40 kN |
|
Failing Load, Συμπίεσης |
|
|
|
66 kN |
|
Max. Nominal Diameter of the Insulating Part |
|
195 mm |
|
215 mm |
|
Bottom Metal Fitting Pitch Circle Diameter |
|
76 mm |
|
127 mm |
|
Τop Metal Fitting Pitch Circle Diameter |
|
76 mm |
|
127 mm |
|
Net Weight |
|
8,9 kg |
|
24 kg |