HRTG — high-resistivity toughened glass insulators for HVDC overhead lines up to ±800 kV
HRTG cap-and-pin insulators made of high-resistivity toughened glass for HVDC overhead lines up to ±800 kV, mechanical load 70–840 kN. Designed to IEC 61325, with fog, open and Outerib profiles.
- Type
- cap-and-pin for HVDC
- Mechanical load
- 70–840 kN
- Voltage
- up to ±800 kV DC
- Material
- high-resistivity toughened glass (HRTG), fittings protected against electrolytic corrosion
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
High-resistivity glass blocks ion migration, and the creepage distance is longer. The metal fittings are protected from electrolytic corrosion. Since 1965, over 12 million units have been installed on HVDC lines up to 800 kV. The fog, open or Outerib profile is selected for the route pollution level.
Technical specifications
| Type | cap-and-pin for HVDC |
|---|---|
| Mechanical load | 70–840 kN |
| Voltage | up to ±800 kV DC |
| Material | high-resistivity toughened glass (HRTG), fittings protected against electrolytic corrosion |
| Profiles | fog, open, Outerib |
| Standard | IEC 61325 |
Request a price and lead time
HRTG — high-resistivity toughened glass insulators for HVDC overhead lines up to ±800 kV. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Customs codes
| UKTZED (Ukraine) | 8546 10 00 00 |
|---|---|
| HS, 6 digits | 8546 10 |
| CN (EU) | 8546 10 00 |
| HTSUS (USA) | 8546 10 00 00 |
| China customs tariff | 8546 10 00 00 |
Codes are for reference: the final code is determined at declaration for the specific model.
Questions and answers
How does an HRTG insulator differ from an ordinary glass one?
High-resistivity glass blocks ion migration under DC voltage, the creepage distance is increased and the fittings are protected against electrolytic corrosion.
What voltage and load are HRTG insulators rated for?
For DC overhead lines up to ±800 kV, mechanical load 70–840 kN.
Which standard do HRTG insulators comply with?
IEC 61325, in fog, open and Outerib profiles.
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