Product Search
Find the right transformer for your needs
Renewable Step-Up Transformers Series Oil-Immersed Transformers
36 Models available
Images are for illustration purposes only
Renewable Step-Up Transformers — Solar & Wind Farm
Renewable step-up transformers raise the low-voltage output of photovoltaic and wind generation to the medium-voltage grid connection, with low no-load and load losses for high annual energy yield. Rated 100–5000 kVA, 0.4/0.69 kV low voltage to 10–35 kV high voltage, mineral-oil or sealed construction with 65 K temperature rise. Suitable for solar farms, wind farms, and energy-storage interconnection.
Key Features
- Low-voltage 0.4/0.69 kV input to 10–35 kV medium-voltage output for grid connection
- Low no-load and load losses to maximize annual energy yield
- Double-split or standard winding configuration for inverter groups
- Sealed or conservator tank construction for outdoor farm installation
- Surge and over-voltage coordination for renewable duty cycles
Applications
- Utility-scale solar farms
- Wind farm collector systems
- Energy-storage grid interconnection
- Distributed generation substations
TECHNICAL DRAWING
Model: S20-M-1000/10.5-BESS | Type: Oil-immersed transformer | Capacity: 1000 kVA
FRONT ELEVATION
ELECTRICAL SCHEMATIC
EFFICIENCY vs LOAD
SIDE VIEW
TOP VIEW
TERMINAL BLOCK
CORE & WINDING
LEGEND:
Specifications Range
All specifications and dimensions can be customized upon request
Model Selector
| Key parameters | Model Range |
|---|---|
| Capacity | 400–2500 kVA |
| HV Voltage (kV) | 10.5 |
| LV Voltage (kV) | 35 |
| Frequency (Hz) | 50/60 |
| Impedance (%) | 4.5, 6 |
| Cooling | ONAN |
| Efficiency | >99% |
| Standard | IEC 60076 |
| Connection | Dyn11 (IEC) |
| Insulation class | A (105°C) |
| Allowed temperature rise | 65 |
| Noise level | ≤41 dB(A), ≤42 dB(A), ≤43 dB(A), ≤44 dB(A), ≤45 dB(A), ≤46 dB(A)… |
| Tap Changer | ±5×2.5% Multi-tap, ±2×2.5% Multi-tap |
| No-load loss | 570–2301 W |
| Load loss | 4300–20929 W |
| Compare | Model | Capacity (kVA) | HV Voltage (kV) | LV Voltage (kV) | Weight | Dimensions |
|---|---|---|---|---|---|---|
| S20-M-400/10.5-PV | 400kVA | 10.5 | 35 | 1551 kg | 3435×2575×3865 mm | |
| S20-M-400/10.5-WT | 400kVA | 10.5 | 35 | 1551 kg | 3435×2575×3865 mm | |
| S20-M-400/10.5-BESS | 400kVA | 10.5 | 35 | 1551 kg | 3435×2575×3865 mm | |
| S20-M-400/10.5-EV | 400kVA | 10.5 | 35 | 1551 kg | 3435×2575×3865 mm | |
| S20-M-500/10.5-PV | 500kVA | 10.5 | 35 | 1687 kg | 3710×2780×4175 mm | |
| S20-M-500/10.5-WT | 500kVA | 10.5 | 35 | 1687 kg | 3710×2780×4175 mm | |
| S20-M-500/10.5-BESS | 500kVA | 10.5 | 35 | 1687 kg | 3710×2780×4175 mm | |
| S20-M-500/10.5-EV | 500kVA | 10.5 | 35 | 1687 kg | 3710×2780×4175 mm | |
| S20-M-630/10.5-PV | 630kVA | 10.5 | 35 | 1858 kg | 4035×3025×4540 mm | |
| S20-M-630/10.5-WT | 630kVA | 10.5 | 35 | 1858 kg | 4035×3025×4540 mm | |
| S20-M-630/10.5-BESS | 630kVA | 10.5 | 35 | 1858 kg | 4035×3025×4540 mm | |
| S20-M-630/10.5-EV | 630kVA | 10.5 | 35 | 1858 kg | 4035×3025×4540 mm | |
| S20-M-800/10.5-PV | 800kVA | 10.5 | 35 | 2074 kg | 4425×3315×4975 mm | |
| S20-M-800/10.5-WT | 800kVA | 10.5 | 35 | 2074 kg | 4425×3315×4975 mm | |
| S20-M-800/10.5-BESS | 800kVA | 10.5 | 35 | 2074 kg | 4425×3315×4975 mm | |
| S20-M-800/10.5-EV | 800kVA | 10.5 | 35 | 2074 kg | 4425×3315×4975 mm | |
| S20-M-1000/10.5-PV | 1000kVA | 10.5 | 35 | 2319 kg | 4845×3630×5450 mm | |
| S20-M-1000/10.5-WT | 1000kVA | 10.5 | 35 | 2319 kg | 4845×3630×5450 mm | |
| S20-M-1000/10.5-BESS | 1000kVA | 10.5 | 35 | 2319 kg | 4845×3630×5450 mm | |
| S20-M-1000/10.5-EV | 1000kVA | 10.5 | 35 | 2319 kg | 4845×3630×5450 mm | |
| S20-M-1250/10.5-PV | 1250kVA | 10.5 | 35 | 2615 kg | 5325×3995×5990 mm | |
| S20-M-1250/10.5-WT | 1250kVA | 10.5 | 35 | 2615 kg | 5325×3995×5990 mm | |
| S20-M-1250/10.5-BESS | 1250kVA | 10.5 | 35 | 2615 kg | 5325×3995×5990 mm | |
| S20-M-1250/10.5-EV | 1250kVA | 10.5 | 35 | 2615 kg | 5325×3995×5990 mm | |
| S20-M-1600/10.5-PV | 1600kVA | 10.5 | 35 | 3016 kg | 5940×4455×6685 mm | |
| S20-M-1600/10.5-WT | 1600kVA | 10.5 | 35 | 3016 kg | 5940×4455×6685 mm | |
| S20-M-1600/10.5-BESS | 1600kVA | 10.5 | 35 | 3016 kg | 5940×4455×6685 mm | |
| S20-M-1600/10.5-EV | 1600kVA | 10.5 | 35 | 3016 kg | 5940×4455×6685 mm | |
| S20-M-2000/10.5-PV | 2000kVA | 10.5 | 35 | 3458 kg | 6585×4940×7410 mm | |
| S20-M-2000/10.5-WT | 2000kVA | 10.5 | 35 | 3458 kg | 6585×4940×7410 mm | |
| S20-M-2000/10.5-BESS | 2000kVA | 10.5 | 35 | 3458 kg | 6585×4940×7410 mm | |
| S20-M-2000/10.5-EV | 2000kVA | 10.5 | 35 | 3458 kg | 6585×4940×7410 mm | |
| S20-M-2500/10.5-PV | 2500kVA | 10.5 | 35 | 3992 kg | 7325×5495×8240 mm | |
| S20-M-2500/10.5-WT | 2500kVA | 10.5 | 35 | 3992 kg | 7325×5495×8240 mm | |
| S20-M-2500/10.5-BESS | 2500kVA | 10.5 | 35 | 3992 kg | 7325×5495×8240 mm | |
| S20-M-2500/10.5-EV | 2500kVA | 10.5 | 35 | 3992 kg | 7325×5495×8240 mm |
Selection Guide
Voltage
Match the inverter LV (0.4/0.69 kV) and the grid HV (10/20/35 kV).
Efficiency
Select low-loss grades to maximize lifetime energy yield.
Cooling
Natural oil cooling (ONAN) standard; forced cooling for higher ratings.
- Frequently Asked Questions
What voltage does a PV step-up transformer handle?
Typically 0.4 kV or 0.69 kV on the inverter side, stepped up to 10 kV, 20 kV, or 35 kV for the grid connection.
Why are low losses important for renewables?
Lower no-load and load losses directly increase the annual energy yield of the solar or wind asset over its lifetime.
Can the transformer run continuously at partial load?
Yes — renewable step-up transformers are designed for the variable, partial-load duty of solar and wind generation.
Is a sealed tank available?
Yes, sealed corrugated-tank construction is available for low-maintenance outdoor farm installation.
Instant Selection & Quote Calculator
Select your specifications to get an estimated price instantly.
More options(6)
Certification
The values below are computed from what you selected above. Anything that cannot be computed yet is shown as an em dash — never as zero.
Iₙ = S / (√3·U) · I_sc = 100·Iₙ / uₖ · S_sc = √3·U·I_sc · I_p = k·Iₖ
Still required to complete the calculation: rated capacity S, impedance voltage uₖ, short-time or peak withstand current.
Per-model values (P0 / Pk / uₖ declared by the factory, losses, noise, temperature rise, dimensions, weight) are not in the product library: those rows stay at an em dash until the factory parameter sheet is supplied. An em dash means the value is unavailable — it is never rendered as zero.
Read-only: no price factor, not part of the sum — the loss-grade cost is already carried by the efficiency (subtype) base price, so charging here would double-bill. Values come from the product library type-test data, interpolated between published capacities; grades the library does not cover show an em dash, never zero.
S13 系列（产品库 S13-M / 卷铁芯 S13-M.RL，Class 3）
Reference prices are for estimation only and do not constitute a formal offer.
3 · Get this quote
We will reply with your latest quote instantly.
Related Engineering Calculators
Free sizing and pricing tools for this product category.