35 kV Oil-Immersed Step-Up Transformer
35 kV step-up · 1000–12500 kVA
Oil-immersed step-up transformer for wind, photovoltaic and energy-storage collection systems.
- Rated power
- 1–12.5MVA
- High voltage
- 33–38.5kV
- Impedance
- 6–14%
35 kV step-up parameter example
The 35 kV step-up example connects wind, photovoltaic and energy-storage systems to the collection network. Select the capacity, voltage ratio and impedance to match the project.
Mainstream products reach the national secondary energy-efficiency standard (S20 series): no-load loss 20–30% lower than the traditional S13 type and load loss 10–15% lower.
Design and performance
Functional features
- High efficiency
- Cold-rolled silicon steel with 45° full-mitre joints and amorphous-alloy options; no-load loss reduced by more than 30%.
- Sealed tank
- Fully sealed corrugated oil tank prevents leakage and suits harsh outdoor environments.
- Short-circuit strength
- Body structure designed to withstand sudden short-circuit impact.
- Intelligent O&M
- Remote monitoring with telesignalling, telemetry, teleregulation and telecontrol.
- Maintenance-free
- Suspended-core-free design reduces maintenance cost.
- Aluminium core option
- Aluminium-core design for new-energy projects reduces life-cycle carbon emissions.
Product advantages
- Foil-wound LV coils
- Whole series uses low-voltage copper-foil winding for short-circuit resistance well above industry level.
- Lower lead resistance
- Insulating LV clamps reduce lead resistance in oil by 10–15%; load loss 1–3% below the industry advanced level.
- Standardised design
- Step-by-step standardised design for rapid design, production and delivery.
- Anti-corrosion
- Acid washing, phosphating and three-proof paint; anti-corrosion up to C5-H.
Application scope
- PowerDistribution network upgrades, civil power supply, substations, renewable-energy grid connection.
- IndustryFactory distribution rooms and large power-equipment supply.
- TransportationPublic infrastructure, electric traction and lighting supply.
- ConstructionCommercial plazas, communication buildings, residential areas, temporary supply.
- Power generationLarge motors, circulating water pumps, induced-draft fans and other auxiliaries.
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Send the capacity, voltage ratio, vector group, impedance and site conditions. Engineering confirms the design against the approved project specification.