DURESCA DTOI(S) / DTOIA(S) — oil-air transformer bushings RIP/RIS, 25–550 kV
DURESCA dry condenser oil-air bushings for power transformers, with no oil inside. DTOI to IEC covers 36–550 kV and 800–8000 A, DTOIA to IEEE covers 25–500 kV and 400–5000 A.
- Rated voltage
- 36–550 kV (DTOI, IEC); 25–500 kV (DTOIA, IEEE)
- Rated current
- 800–8000 A (DTOI); 400–5000 A (DTOIA)
- Insulation
- RIP (resin-impregnated paper) or RIS (resin-impregnated synthetic), polymer insulator
- Temperature
- −50…+40 °C
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
The bushings operate without partial discharges and require no maintenance. Mounting angle 0–90°. The insulation is RIP (resin-impregnated paper) or RIS (resin-impregnated synthetic), the external insulator is polymer. Operating temperature −50…+40 °C. The bushings comply with IEC 60137, IEEE C57.19.00 and IEC 60815, and seismic withstand is confirmed to IEEE 693-2018 for 230–300 kV.
Technical specifications
| Rated voltage | 36–550 kV (DTOI, IEC); 25–500 kV (DTOIA, IEEE) |
|---|---|
| Rated current | 800–8000 A (DTOI); 400–5000 A (DTOIA) |
| Insulation | RIP (resin-impregnated paper) or RIS (resin-impregnated synthetic), polymer insulator |
| Temperature | −50…+40 °C |
| Standards | IEC 60137, IEEE C57.19.00, IEC 60815 |
| Seismic withstand | IEEE 693-2018 (230–300 kV) |
Replacement for
ГМТА-…/110–500 bushings, ГКТ (RIP), ГМЛБ (line bushings); high-current types up to 8000 A: general type
selected by purpose and main parameters, please confirm with our manager
Request a price and lead time
DURESCA DTOI(S) / DTOIA(S) — oil-air transformer bushings RIP/RIS, 25–550 kV. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Customs codes
| UKTZED (Ukraine) | 8535 90 00 00 |
|---|---|
| HS, 6 digits | 8535 90 |
| CN (EU) | 8535 90 00 |
| HTSUS (USA) | 8535 90 80 60 |
| China customs tariff | 8535 90 00 90 |
Codes are for reference: the final code is determined at declaration for the specific model.
Questions and answers
What is the difference between DTOI and DTOIA?
DTOI is built to IEC for 36–550 kV and 800–8000 A. DTOIA is built to IEEE for 25–500 kV and 400–5000 A.
At what angle can the bushing be mounted?
At an angle of 0–90°. There is no oil in the bushing.
Is seismic withstand confirmed?
Yes, to IEEE 693-2018 for bushings of 230–300 kV.
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