High Voltage Porcelain Pin Insulator of St-20/J (R)
High Voltage Porcelain Pin Insulator of St-20/J (R) image
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- Overview
- Product Description
- Parameter drawing
Basic Info.
Packaging & Delivery
Product Description
HV porcelain pin insulator of SHF20GS type
There are two modifications of the insulator after the manner of its coupling:
with the polyethylene capsule, with the composite material thread corresponding to the requirements of SFS (Finland) standard.
Insulator meet TU 3493-170-00111120-2000 requirements.
Minimum voltage | Nominal | kV | 20 |
Puncture voltage in insulating medium | kV | 180 | |
50 Hz withstand voltage (dry) | kV | 75 | |
50 Hz withstand voltage (wet) | kV | 60 | |
Impulse withstand voltage | kV | 125 | |
Average annual number of failure, not more than | N/per year | 0.0005 | |
Nominal creepage distance, not less than | mm | 325±14.5 | |
Minimum mechanical failing load (bending), not less than | kN | 13 | |
Weight | kg | 1.82±0.1 |
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