Ready to Proceed?
Request a Firm Quotation for 1250 kVA Solar Energy Storage (BESS)...
Share your project specifications and receive an official CIF quotation within 24 hours.
Oil-Immersed Transformers
Solar & Wind Step-Up
SKU: 1250_KVA_SOLAR_ENERGY_STORAGE_BESS_THREE_PHASE_TRANSFORMER
1250 kVA Solar Energy Storage (BESS) Three-Phase Transformer
This 1250 kva solar energy storage (bess) three-phase transformer is designed for renewable energy interconnection, step-up duty, and grid-side distribution applications. It supports stable operation in solar, wind, photovoltaic, and energy-storage projects where flexible voltage ratios, reliable cooling, and project-oriented outdoor design are required.
Compliance Standards
IEC • ANSI • IEEE • GB
Quality Inspection
100% FAT Routine Tested
Engineering CAD
2D CAD / SLD Schematics
Global Logistics
Direct Seaport CIF Export
Engineering Datasheet
1250 kVA Solar Energy Storage (BESS) Three-Phase Transformer — Technical Parameters & Ratings
| Rated Capacity | 1250 kVA |
|---|---|
| Primary Voltage (U1) | 11,000 V (11 kV) |
| Secondary Voltage (U2) | 415 V / 240 V (3-Phase 4-Wire) |
| Vector Group | Dyn11 |
| Rated Frequency | 50 Hz |
| Cooling Method | ONAN (Oil Natural Air Natural) |
| Primary Current (I1) | 21.87 A |
| Secondary Current (I2) | 1739.0 A |
| Guaranteed No-Load Loss (P0) | 1360 W |
| Guaranteed Load Loss (Pk at 75°C) | 9800 W |
| Short-Circuit Impedance (Uk) | 4.5% |
| HV Insulation Level | LI 75 / AC 35 (11kV Class) |
| Temperature Rise Limits | Top Oil ≤ 50K, Winding ≤ 55K (45°C Ambient) |
| Creepage Distance | ≥ 31 mm/kV (Outdoor Tropicalized Porcelain) |
| Core & Coil Weight | 1950 kg |
| Insulating Oil Weight | 1100 kg |
| Total Assembled Weight | 3850 kg |
| Overall Footprint (L×W×H) | 1750 mm × 1120 mm × 1850 mm |
| Governing Standards | IEC 60076, BS 171, SON NIS, NERC Code |
Technical Highlights
- This product combines dependable transformer platform design, flexible project configuration, and practical export-oriented construction. It is suitable for applications requiring stable electrical performance, configurable voltage ratios, outdoor durability, and documentation support for international project supply.
Application Scenarios
- Solar power plants
- Wind farm collector and grid interface systems
- Photovoltaic station and inverter interconnection projects
- Battery energy storage systems (BESS)
- Renewable energy substations and export EPC projects
Key Features
- 1250 kVA rated capacity for renewable interconnection, step-up, or project-side power conversion
- Designed for solar, wind, PV, or energy-storage power system applications
- Configurable voltage ratio for inverter-side, collector-side, or grid-side connection
- Oil-immersed construction for dependable cooling in outdoor renewable projects
- Project-oriented accessory and monitoring options available
- Suitable for IEC-based renewable projects and export EPC supply
Optional Configurations
- Low-voltage side rating and voltage ratio
- Frequency: 50 Hz or 60 Hz
- Vector group and tapping range
- Copper or aluminum winding
- Cooling method, accessory package, and monitoring option
- Tank structure, coating system, and special environmental adaptation
- Color, nameplate language, and document package
- Ambient temperature, altitude, and installation condition adaptation
Engineering Submittal & Layout Workbench
Substation Room Fit & Multi-Equipment CAD Footprints
Select your equipment type and capacity to inspect verified GA engineering CAD line drawings, Single Line Diagrams (SLD), dimensions (L × W × H), roller gauge, and submittal clearances before procurement.
Available Ratings:
11kV / 33kV Dual Voltage
IEC 60076 / IEEE Compliant
100% Routine Factory Tested
Export Nitrogen / Seaworthy Pack
1000 kVA Technical Dimensions
IEC 60076-1International utility & industrial submittal specifications
| Overall Length (L) | 1,750 mm |
|---|---|
| Overall Width (W) | 1,120 mm |
| Overall Height (H) | 1,780 mm |
| Roller Wheel Track Gauge (D) | 820 mm |
| Total Equipment Net Weight | 3,820 kg |
| Min Substation Clearance | 1,000 mm surrounding |
| Rated Voltage / System | 11 kV / 33 kV Dual Primary |
| Applicable Standard | IEC 60076-1 / IEEE C57 |
Download Technical Data Sheet (PDF)
Request Factory Engineering Submittal Package
Full CAD DXF/DWG vector footprints, 3D STEP models, and custom project submittals provided within 2 hours upon request.
PSCAD™ & ETAP® Grid Simulation
Non-Linear V-I Saturation Curve & Air-Core Inductance (\(L_{\text{air}}\))
Precision core excitation characteristics, non-linear knee inflection (\(V_k\)), and air-core reactance (\(X_{\text{air}}\)) calibrated for 1250 kVA Solar Energy Storage (BESS) Three-Phase Transformer.
Quick Rating Switch
kVA
kV
%
2.10
1.80 (Compact Shell)
2.10 (Standard IEEE / CIGRE)
2.50 (Outer HV Layer)
Air-Core Inductance (\(L_{\text{air}}\))
18.7× In Peak
81.65 mH
Reactance
25.65 Ω
Knee \(V_k\)
13.0 kV
Decay \(\tau\)
0.17 s
Non-Linear Magnetization Characteristic (\(\lambda - I_{\text{exc}}\))
Interactive Vector Plot
Linear Core Zone
Knee Transition
Air-Core Slope (\(X_{\text{air}}\))
| PSCAD Simulation Point | Voltage (\(V_{\text{pu}}\)) | Flux (\(\lambda\), Wb-t) | Current (\(I_{\text{pu}}\)) | Current (A) |
|---|
Data formatted for direct entry into PSCAD Classical Saturable Transformer and UMEC core components per IEEE C57.12.00 & CIGRE 33.02.
XinHuan Hefei Manufacturing Plant — Precision Winding & Assembly Line
Factory Build Quality
1250 kVA Solar Energy Storage (BESS) Three-Phase Transformer — Internal Construction & Premium Materials
Built with tier-1 certified raw materials engineered for long operational life (>30 years), superior dielectric withstand, and high short-circuit withstand capacity.
Silicon Steel Core
High-grade grain-oriented cold-rolled silicon steel with step-lap mitered joints for low $P_o$ losses.
100% Copper Windings
Electrolytic oxygen-free copper with high thermal grade insulation for surge resistance.
Precision Tap Changer
De-energized tap switch ($\pm 2 \times 2.5\%$) or on-load vacuum tap changer (OLTC) optional.
Protection & Sensors
Buchholz gas relay, magnetic oil gauge (MOG), and dial thermometers with alarm contacts.
Quality Assurance
CNAS & ISO 9001 Certified
1250 kVA Solar Energy Storage (BESS) Three-Phase Transformer — 100% Factory Acceptance Testing (FAT)
Every transformer unit manufactured by XinHuan undergoes mandatory routine factory testing prior to container dispatch. Full certified routine and type test submittal reports are provided with commercial documentation:
1. Insulation Resistance
Megger test (HV to LV, HV to Earth, LV to Earth) >1000 MΩ.
2. Voltage Ratio & Vector
Turns ratio check across all taps with phase displacement check.
3. Winding DC Resistance
Precision Kelvin bridge measurement across all tap positions.
4. Short-Circuit Impedance
Load loss ($P_k$) measurement corrected to reference temp (75°C).
5. No-Load Loss & Current
Core excitation test ($P_o$ and $I_o$) at rated sinusoidal voltage.
6. AC Voltage Withstand
Power-frequency separate source test (e.g. 50kV/70kV 1 min).
7. Lightning Impulse (BIL)
Full wave & chopped wave impulse withstand (BIL up to 170kV).
8. Partial Discharge & Seals
Ultra-low discharge (<5 pC) and pressurized oil/gas tightness test.
Logistics Intelligence
Global CIF / FOB Delivery
1250 kVA Solar Energy Storage (BESS) Three-Phase Transformer — Export Packaging & Seaport Logistics
The product is prepared for export shipment with suitable packing and transport arrangements based on destination and handling requirements. Technical documents, test reports, nameplate confirmation, and pre-shipment support can be supplied according to order requirements. OEM/ODM support and project-based coordination are available for qualified inquiries.
Production Lead Time
Standard manufacturing cycle is 4 to 6 weeks from approval of GA blueprints and single-line diagrams.
Heavy-Duty Export Packaging
Vacuum moisture barrier preservation, nitrogen blanketing, and reinforced steel-frame structural crate skids.
Direct Seaport Routes
Fast ocean freight to Port of Chancay & Callao (25-35 days), Manila, Lagos, and Middle East ports.
Equipment Video Inspection
100% TestedWatch XinHuan technicians perform routine dielectric testing, winding insulation checks, and quality inspections inside our Hefei manufacturing plant.
Every unit 100% routine tested before container loading.
Direct Factory Consultation
Need Custom Project Engineering?
Send your single-line diagram (SLD), voltage ratings, or tender specifications. Our chief electrical engineers will review and issue an actionable CIF quotation within 24 hours.
Custom Voltage Ratios
High-Altitude Derating
Short-Circuit Impedance
Third-Party FAT Witness
1250 kVA Solar Energy Storage (BESS) Three-Phase Transformer — Engineering & Procurement FAQs
Frequently asked questions regarding specifications, certifications, and delivery for 1250 kVA Solar Energy Storage (BESS) Three-Phase Transformer.
Please send us your required capacity, high voltage, low voltage, frequency, cooling preference, and installation conditions for the 1250 kva solar energy storage (bess) three-phase transformer. Our team can recommend a suitable configuration and provide a quotation based on your project requirements.
The product can be produced according to IEC standards and customer technical specifications. Routine factory tests, inspection records, and technical documentation can be provided before shipment. Optional configurations for project-specific grid, environmental, and accessory requirements are available upon request.
Standard manufacturing lead time is 4 to 6 weeks following approval of GA blueprints and single-line diagrams. Direct sea container shipping is available under FOB, CFR, or CIF terms with full customs documentation (Bill of Lading, Certificate of Origin, Test Reports).
PARENT ENGINEERING PILLAR
IEC 60076 · 50–3150 kVA Loss & Impedance Tables
11kV Distribution Transformers Pillar Guide
Compare full capacity no-load loss ($P_0$), load loss ($P_k$), impedance ($U_k\%$), dimensional weights, and routine test tolerances across all models in this series.
Engineering Reference Silo
Transformer Category Pillars & International Standards
Engineering Link Magnets & CAD Resources: