200 kVA 11kV to 400V Oil-Immersed 3 Phase Step Down Transformer For Sale
The 200 kVA 3 Phase Step Down Transformer is a durable and energy-efficient solution for medium-voltage to low-voltage conversion in commercial, industrial, and municipal distribution networks. Engineered for 11 kV primary and 400 V secondary voltages, this oil-immersed transformer is ideally suited for use across European and international 50 Hz power grids. Its grounded Wye secondary ensures balanced loads and safe neutral availability, making it an optimal choice for applications requiring reliable three-phase distribution.
Manufactured by Transformador de energía, a certified power transformer supplier with over 30 years of experience, this unit features a precision-engineered magnetic core built with cold-rolled grain-oriented silicon steel (CRGO) and oxygen-free copper windings for superior conductivity and low core losses. The transformer tank is filled with high-grade mineral insulating oil that provides long-term thermal and dielectric stability, with optional biodegradable or fire-resistant fluids available.
Designed to meet or exceed international standards such as IEC 60076, ANSI C57, and IEEE, the transformer is enclosed in a hermetically sealed steel tank coated with anti-corrosion paint for maximum protection against moisture, salt spray, and mechanical wear. Built-in protection features include a temperature indicator, oil level sight glass, pressure relief valve, and optional gas relay for enhanced safety.
This 200 kVA oil-filled 3 phase step-down transformer is widely used in utility subestaciones, industrial parks, logistics hubs, shopping centers, and public infrastructure projects. It is also well-suited for integration with renewable energy systems, battery storage applications, and backup generators.
Energy Transformer supports OEM, ODM, and customized transformer designs, offering competitive pricing for bulk orders and export-ready documentation. With successful deployments in the United States, Canada, Germany, France, the Netherlands, the UK, Spain, Portugal, Australia, and beyond, we serve EPCs, distributors, and electrical contractors with fast lead times, stable inventory, and global logistics support.
If you are sourcing a dependable 11kV to 400V 3 phase distribution transformer for commercial or light industrial power networks, Energy Transformer provides certified, factory-direct solutions to match your grid and application needs.
Más información:Transformador de distribución sumergido en aceite reductor de 400 kVA, 13,8 kV a 480Y/277 V, norma ANSI
200 kVA 11kV to 400V Oil-Immersed 3 Phase Step Down Transformer Technical Specs
No. | Artículo | Especificación | Descripción |
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1 | Capacidad nominal | 200 kVA | Suitable for small to mid-scale commercial and industrial low-voltage distribution |
2 | Tensión de entrada | 11 kV (Delta) | Standard medium-voltage input, adaptable to 10.5 kV or 13.8 kV upon request |
3 | Tensión de salida | 400 V / 230 V (Wye) | Ideal for European, Australian, and international 50 Hz power networks |
4 | Configuración de fases | 3-phase, 50/60 Hz | Compatible with both EU and North American system frequencies |
5 | Sistema de refrigeración | ONAN (Aceite Natural Aire Natural) | Quiet, self-regulating cooling system requiring no external fans |
6 | Material del núcleo | CRGO acero al silicio | Minimizes core losses for better power quality and energy savings |
7 | Medio aislante | Mineral oil (IEC/ASTM Grade) | Delivers thermal stability and insulation under continuous operation |
8 | Aumento de temperatura | Max 60°C | Optional energy-saving model available with 50°C or 55°C rise limits |
9 | Enclosure Design | Sealed, rust-resistant tank | Outdoor-rated with optional pad-mounting; IP44/IP54 protection classes available |
10 | Cumplimiento de las normas | IEC 60076, ANSI C57, BS, EN | Designed to meet grid standards across Europe, UK, Canada, and Australia |
11 | Certificaciones | CE, UL, ISO 9001, RoHS, SGS | Export-ready and approved for international utility and private use |
12 | Configuración del bobinado | Delta primary – Wye grounded secondary | Custom options available: Wye-Wye, Delta-Delta, Wye-Delta |
13 | Target Applications | Commercial buildings, EV charging, infrastructure | Also fits rural networks, solar farms, and construction projects |
14 | Funciones de protección | Oil gauge, thermal sensor, relief valve | Optional surge arresters, oil drain valves, and gas relays available |
15 | Transformer Size | Varies by enclosure and voltage group | Weight: ~600–900 kg depending on cooling and material |
16 | Efficiency Rating | Meets DOE & Ecodesign standards | Designed for minimal core and copper losses under full load |
17 | Método de montaje | Skid base with lifting lugs | Ready for crane/forklift transport and permanent outdoor installation |
18 | Operating Range | -25°C to +45°C | Arctic version available for extreme cold to -40°C |
19 | Pérdida a plena carga | Approx. 1.0–1.3% | Balanced for high performance and energy savings at rated output |
20 | Pérdida en vacío | ≤ 0.25% | Maintains minimal energy use during idle periods |
21 | Pérdida de carga | ≤ 0.85% | Low-resistance copper windings ensure stable delivery |
22 | Impedancia | 4.5% ±10% | Tunable upon request for grid harmonics and fault coordination |
23 | Short Circuit Capacity | Up to 16 kA for 2s | Internally braced for mechanical durability during fault events |
24 | Clase de aislamiento | Class A (105°C) standard | Class B or Class F upgrade for high-temp areas |
25 | Material de bobinado | Copper standard, aluminum optional | Copper preferred for longer life and greater thermal endurance |
26 | Cambiador de grifos | ±2 × 2.5% Off-Circuit Tap Changer | On-load tap changer (OLTC) upgrade available for voltage tuning |
27 | Bujes | Porcelain or polymer per ANSI/IEC | Salt-resistant polymer bushings for coastal or desert regions |
28 | Volumen de aceite | Approx. 90–110 Liters | Depends on tank style and ambient temperature specification |
29 | Lifespan Expectancy | 20–30 years | Designed for long-term reliability with minimal maintenance |
30 | Audible Noise | ≤ 50 dB @ 1m | Quiet operation ideal for residential or mixed-use areas |
31 | Warranty Coverage | 2-year base warranty | Extended warranties and service contracts offered on request |
32 | Lead Time (Stock) | 15–25 days | In-stock models ship quickly for urgent project needs |
33 | Lead Time (Custom) | 40–55 days | Efficient custom manufacturing with full compliance documentation |
34 | Pricing Terms | RFQ based on specs and quantity | Tiered pricing available for bulk, OEM, or export orders |
35 | Origin & Brand | Transformador de energía (China) | Proven OEM transformer factory with global supply to the EU, US, and Australia |



✅ 200 kVA 3 Phase Step Down Transformer Overview
ENERGY TRANSFORMER's 200 kVA 3 Phase Step Down Transformer is engineered for stable voltage reduction from 11 kV to 400 V in European and North American grids. This oil-immersed unit is designed for outdoor operation, offering high thermal efficiency, low loss, and long service life. Compliant with IEC, ANSI, and IEEE standards, it delivers safe and reliable medium-voltage distribution for commercial and utility use.
✅ Applications of 200 kVA Step Down Transformer
Ideal for commercial complexes, EV charging stations, agricultural irrigation, manufacturing plants, public infrastructure, and renewable energy systems. The 3 Phase Step Down Transformer ensures dependable performance in diverse applications across the UK, Germany, Spain, France, the U.S., and Canada.
✅ Reliable 3 Phase Transformer Manufacturer
ENERGY TRANSFORMER is a global transformer manufacturer with ISO 9001 certification, specializing in 3 Phase Step Down Transformers for over 30 years. All units are tested and certified to UL, CSA, CE, and DOE standards. We support OEM/ODM solutions and offer competitive factory-direct pricing with custom branding options.
✅ 3 Phase Step Down Transformer Availability in US & EU
We supply ready-to-ship units and made-to-order models through our logistics hubs in Rotterdam, Antwerp, Houston, Los Angeles, Toronto, and Barcelona. Products are tailored to local grid codes and supported with complete documentation.
✅ 200 kVA Step Down Transformer for Sale
Available in stock or with short production lead times. Delivered FOB, CIF, or DDP to your port or job site. Perfect for EPCs, distributors, and infrastructure contractors needing certified 3 Phase Step Down Transformers.
✅ 200 kVA Transformer Electrical Configuration
Primary: 11 kV Delta
Secondary: 400Y/230 V Wye
The 3 Phase Step Down Transformer supports balanced load distribution and grounded neutral for enhanced safety. Optional configurations include Delta-Delta or Wye-Wye.
Más información:Transformadores de energía eólica: Guía esencial para sistemas de energías renovables
✅ Amperage Calculation (3 Phase Step Down)
Low Voltage (400 V): ≈ 289 A
High Voltage (11 kV): ≈ 10.5 A
Amps = (200 × 1000) ÷ (√3 × Voltage)
✅ Transformer Dimensions & Mounting
Approx. Size: 1500 mm × 1100 mm × 1400 mm
Mounting: Pad-mounted steel skid base
Custom enclosures available for space-limited or urban installations
✅ Weight & Oil Volume
Weight: 850 – 1,100 kg
Oil Capacity: 120–160 liters of mineral-based insulating fluid
All oils meet IEC 60296 and ASTM D3487 standards; optional biodegradable and fire-resistant fluids available
✅ Price of 200 kVA 3 Phase Step Down Transformer
Price Range: $3,500 – $6,800 USD depending on design, certifications, and options
Request a custom quote for your project (FOB/CIF/DDP options available)
✅ Energy Efficiency Standards
Meets EU EcoDesign Tier 2 and U.S. DOE 2016 energy efficiency guidelines
Low core and copper losses thanks to CRGO laminated steel and copper windings
Más información:Transformadores eléctricos de potencia: Definición, tipos y aplicaciones
✅ Tap Changer Options
Manual OCTC ±2 × 2.5% standard
Optional OLTC with voltage regulation for fluctuating grid environments
Precision voltage control in all 3 Phase Step Down Transformer models
✅ Transformer Enclosure & Protection Features
Tank Type: Hermetically sealed and anti-corrosion coated
IP Rating: IP23 standard; IP54 optional for marine or humid zones
Integrated with pressure relief valves, oil level gauges, thermometers, and optional Buchholz relay and surge arresters
✅ Installation Guidelines
Delivered ready for installation—factory-filled, tested, and sealed
Suitable for radial or ring distribution networks
Mountable on concrete pads or steel base structures
Detailed wiring and grounding diagrams provided
Más información:Componentes clave de un transformador de potencia: Núcleo, devanados y aislamiento
✅ Lead Time & Logistics
Standard Units: 20–30 days
Custom Builds: 45–65 days
Global shipping available by container or pallet; compliant with EU and U.S. import regulations
✅ Certifications & Testing
Standards: IEC 60076, ANSI C57, IEEE, CE, UL, CSA
Cada 3 Phase Step Down Transformer includes routine test reports; type and special tests upon request
Third-party inspection (SGS, TUV, BV) available
✅ Wholesale & Bulk Supply
We support large-volume orders, government tenders, and private-label branding for 3 Phase Step Down Transformers
Fast manufacturing cycles and flexible MOQ for resellers and project integrators
✅ Other Transformer Models Available
100 kVA, 250 kVA, 315 kVA, 500 kVA 750 KVA 1000 KVA 1500 KVA 2000 KVA 2500 KVA oil-filled transformers
Dry-type, cast resin, pole-mounted, and substation-type configurations
Inverter step-down transformers for solar and battery energy storage systems
✅ FAQ: 3 Phase Step Down Transformers (200 kVA)
Q: What is the expected lifespan?
A: 25–30 years under normal load and climate conditions.
Q: Can this transformer be used in 50 Hz grids?
A: Yes, dual-frequency compatible versions (50/60 Hz) are available.
Q: Does the unit meet EU/UK certification standards?
A: Yes, it is CE marked and fully compliant with IEC and BS requirements.


✅ Why Choose Energy 200 kVA 3 Phase Step Down Transformer – 11 kV to 400 V
Energy Transformer's 200 kVA oil-immersed 3 phase step down transformer is built for dependable voltage conversion from 11 kV to 400 V in commercial, utility, and light industrial applications across Europe and North America. Ideal for factories, warehouses, renewables, and urban distribution.
Ventajas clave:
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Standards Compliant: Built to IEC, ANSI, and IEEE standards for EU, UK, and U.S. grid compatibility.
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Efficient Design: Copper windings, ONAN cooling, and low-loss core ensure long-term performance.
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Flexible Configuration: Standard Delta-Wye; other vector groups and tap options available.
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Durable & Weatherproof: Hermetically sealed, outdoor-rated enclosure (IP23); optional IP54.
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Quick Turnaround: Stock units available with short delivery to EU and U.S. ports.
Energy Transformer offers reliable, efficient, and compliant 3 phase step down transformers for your 11 kV to 400 V distribution needs. Whether for a public utility, solar farm, or data center, our 200 kVA transformer delivers peace of mind and long service life.
📩 Póngase en contacto con nosotros for technical drawings, quotations, and delivery schedules.
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