6000 kVA 33kV to 11kV Oil Filled Substation Transformer – Copper Windings

6000 kVA 33kV to 11kV Oil Filled Substation Transformer Features

The 6000 kVA 33kV to 11kV Oil Filled Substation Transformer is a high-performance power distribution solution designed for medium voltage electrical substations and utility networks. With a powerful 6000 kVA capacity, 33kV Delta-connected primary, and 11kV grounded Wye secondary, this oil filled substation transformer is engineered for efficient voltage conversion, grid stability, and long-lasting durability. Built with top-grade copper windings, grain-oriented silicon steel, and UL Listed oil-immersed insulation, it guarantees low core losses, high thermal efficiency, and dependable performance in both 50Hz and 60Hz power systems.

Each oil filled substation transformer is manufactured at Energy Transformer’s modern facility, strictly adhering to UL, ANSI, IEEE, IEC, and GOST standards. It features a sealed tank design with essential protection components such as a Buchholz relay, pressure relief valve, oil level indicators, and temperature sensors. The transformer is housed in a rugged, weatherproof enclosure, optimized for outdoor environments across utility substations, industrial zones, and energy infrastructure projects.

As a leading Chinese manufacturer and global supplier, Energy Transformer provides oil filled substation transformers with full factory testing, OEM customization, and direct wholesale pricing. These transformers are widely delivered to the United States, Canada, Mexico, Brazil, Argentina, Peru, Bolivia, Guyana, Panama, and Spain, meeting regional compliance standards and end-user expectations. With fast production timelines, large-scale availability, and expert support, our 6000 kVA oil filled substation transformer ensures reliable performance and cost-effective power delivery across the Americas and Spanish-speaking regions.

6000 kVA 33kV to 11kV Oil Filled Substation Transformer Technical Specs

No.	Specification Item	Details	Notes/Remarks
1	Product Type	Oil Filled Medium Voltage Substation Transformer	Built for high-reliability utility and industrial power distribution
2	Rated Capacity	6000 kVA	Available in 2.5 MVA to 6.3 MVA range
3	Phase	Three-Phase	Industry standard for grid systems
4	Frequency	60 Hz (50 Hz optional)	Designed for American power grids
5	Primary Voltage (HV)	33 kV	Configurable from 6 kV to 35 kV
6	Secondary Voltage (LV)	11 kV	Optional LV voltages: 13.2 kV, 7.62 kV, etc.
7	HV Winding Connection	Delta (Δ)	Other options: Wye available
8	LV Winding Connection	Grounded Wye (Y)	Ensures safety and grounding stability
9	Vector Group	Dyn11	Others available on request
10	Tap Changer	±5%, 2.5% steps	Off-circuit and On-load Tap Changer (OLTC) options
11	No-load Loss	Approx. 1.6 kW	Designed for minimal standby losses
12	Load Loss (75°C)	Approx. 13 kW	Enhanced efficiency under full load
13	Impedance (Z%)	6.5% ±10%	Tuned for protection and system coordination
14	Insulation Level HV	BIL 170 kV	Power frequency withstand: 70 kV
15	Insulation Level LV	BIL 38 kV	Power frequency withstand: 10 kV
16	Insulation Class	Class A (B optional)	Thermal and dielectric performance
17	Max Temp Rise	65°C (or 55°C)	Per ANSI/IEEE standards
18	Altitude Rating	≤1000 m	Derating applies above 1000 m
19	Ambient Temp Range	-45°C to +50°C	Suitable for extreme environments
20	Cooling Type	ONAN (Oil Natural Air Natural)	ONAF optional for heavy load
21	Short Circuit Duration	2 seconds	Built to withstand fault currents
22	Sound Level	≤ 55 dB at 1 meter	Complies with NEMA TR-1, IEEE C57.12
23	Core Construction	Step-lap grain-oriented silicon steel	Low hysteresis & eddy current losses
24	Winding Material	Copper (standard), Aluminum (optional)	Superior conductivity and heat tolerance
25	Tank Type	Fully sealed corrugated steel tank	Optional: conservator-type tank
26	Transformer Oil	Mineral oil, IEC 60296 compliant	Biodegradable options available
27	Enclosure Rating	IP23 (default), IP44 optional	Outdoor-rated protection
28	Surface Coating	Anti-rust sandblasted + epoxy + topcoat	Coastal and industrial use ready
29	Standard Accessories	Oil level gauge, thermometer, relief valve, drain, grounding lugs	All factory-installed
30	Protection Devices	Buchholz relay, pressure relief, oil temp & level alarms	Optional SCADA-ready sensors
31	Smart Monitoring	Optional IoT sensors for load, oil temp, humidity	Predictive maintenance enabled
32	Termination Options	Cable box or ANSI porcelain bushings	For flexible installations
33	Radiator Design	Welded/bolted radiators with corrosion resistance	Efficient thermal dissipation
34	Standards Compliance	ANSI C57.12, IEEE C57, UL Listed, CSA C88, IEC 60076	UL certification for U.S. & Canada
35	Testing	Routine, Type, and Special tests per IEEE/IEC	100% factory-tested before shipping
36	Certifications	UL, CSA, CE, CUL, GOST, ISO 9001	Suitable for American and global markets
37	Approx. Dimensions	2300 mm (L) × 1500 mm (W) × 1900 mm (H)	Actual size depends on configuration
38	Approx. Weight	4200 kg (including oil)	May vary by accessories and cooling type

✅ What Is a 6000 kVA Oil Filled Substation Transformer Used For?

The 6000 kVA oil filled substation transformer is built for large-scale energy distribution, stepping voltage down from 33kV to 11kV in medium voltage networks. Commonly used in power plants, chemical facilities, and renewable projects, it enables consistent voltage supply and grid stability across industrial and utility infrastructures in the U.S., Canada, Mexico, Brazil, Argentina, and Chile.

✅ Core Specifications of the 6000 kVA Substation Transformer

This transformer includes a fully sealed oil-immersed tank, ONAN cooling, and a ±5% tap changer in 2.5% increments. The Dyn11 vector group ensures compatibility with common utility requirements. It uses copper windings and silicon steel cores for maximum durability and reduced electrical losses. Fully compliant with UL, IEC 60076, IEEE, ANSI, and CSA standards.

✅ What Is the Output Current of a 6000 kVA 33/11kV Transformer?

At 11 kV, a 6000 kVA transformer outputs approximately 315 amps per phase (based on √3). The use of copper windings increases current carrying capacity while reducing heat buildup and ensuring safer operation under high demand loads—perfect for heavy-duty applications like mining and industrial automation.

✅ How Big Is a 6000 kVA Oil Filled Transformer?

Typical footprint: 2500 mm (L) × 1600 mm (W) × 2100 mm (H), though this varies by features and accessories. Units are engineered to fit compact substations or open-air installations in urban or remote regions. Custom dimensions available based on project scope and installation site.

✅ Weight of a 6000 kVA Substation Transformer

Net weight (oil included) usually ranges between 5000 kg to 6300 kg. Robust tank construction and advanced insulation materials add mass but enhance resistance to short circuit stress, vibration, and extreme temperature cycles in tropical and temperate climates.

✅ Is It Weatherproof? How Is the Enclosure Designed?

Yes. The transformer enclosure features a sandblasted, epoxy-primed, and UV-protected paint finish, with IP23 protection as standard. For harsher climates like the Amazon basin or high-altitude Andean areas, IP54/IP65 upgrades are available. Radiators and seals are optimized to prevent corrosion, leaks, or moisture ingress.

✅ How Is the 6000 kVA Transformer Installed?

ENERGY TRANSFORMER provides on-site installation guides, including pad layout, grounding details, and cable routing diagrams. Delivered oil-filled, pressure-tested, and sealed for quick setup. Units are compatible with looped or radial feed configurations, supporting both traditional and smart grid systems.

✅ Why Choose Copper Windings in a Substation Transformer?

Copper ensures low resistive losses, high mechanical strength, and excellent overload performance. In large capacity transformers like 6000 kVA, copper drastically reduces operational risk under fluctuating loads—especially critical in Latin American markets with renewable energy variability or peak demand cycles.

✅ How Efficient Is the Transformer?

Engineered with optimized lamination geometry, this transformer achieves industry-leading efficiency. Meets DOE 2016, NEMA TP1, and CSA C802.1 energy efficiency standards, reducing both operating costs and carbon footprint in commercial and public grid sectors.

✅ Certifications & Test Compliance

Each unit is certified under UL, ANSI C57, IEEE, IEC, CSA, and GOST standards. Factory testing includes type, routine, and special tests. Reports, third-party inspection, and certificates of conformance are provided for regulatory compliance in the Americas and Spanish-speaking markets.

✅ Where Can This Transformer Be Used?

From energy-intensive industrial parks in Mexico to rural substations in Peru, this 6000 kVA oil filled substation transformer supports utilities, solar and wind farms, shopping malls, tunnels, and export processing zones. It’s also ideal for backup substation deployment in regions prone to natural disasters.

✅ Can I Adjust the Voltage?

Yes. The transformer comes with ±5% tap changer (either on-load or off-load) to allow primary voltage tuning and regulation. Standard high voltage is 33 kV, adjustable between 6 kV and 35 kV; low voltage output of 11 kV can be tailored upon request.

✅ Is It Available for Immediate Purchase?

ENERGY TRANSFORMER maintains a rolling production schedule. 6000 kVA oil-filled units are available with a lead time of 35–45 days, FOB or CIF to ports in Los Angeles, Houston, Veracruz, Callao, Buenos Aires, and beyond. We support urgent orders and bulk purchasing.

✅ How Much Does It Cost?

Pricing for a 6000 kVA 33/11 kV oil filled substation transformer starts around $32,000 USD, scaling up based on options like UL listing, monitoring systems, or enhanced enclosures. Get in touch for a precise quote with shipping and documentation included.

✅ Who Makes 6000 kVA Substation Transformers?

ENERGY TRANSFORMER is a leading UL-listed Chinese manufacturer exporting medium voltage oil filled substation transformers to the Americas. We specialize in 500 kVA to 100,000 kVA capacities, offering full customization, OEM branding, and bilingual tech support.

✅ Wholesale, OEM, and Contractor Solutions Available

We work with contractors, energy developers, and utility providers across the U.S., Canada, Panama, Guyana, Bolivia, and Spain. Bulk transformer procurement, GOST/UL/CSA compliance, and private-label branding all supported.

✅ Similar Models You May Need

• 3000 kVA Substation Transformers for Regional Distribution

• 5000 kVA UL-Listed Transformers for Solar and Wind Integration

• Cast Resin Dry-Type Transformers for Indoor or Fire-Sensitive Locations

Why Choose the 6000 kVA 33kV to 11kV Oil Filled Substation Transformer with Copper Windings?

The 6000 kVA oil filled substation transformer from Energy Transformer is purpose-built for heavy-load, medium voltage distribution across critical power systems in industrial, utility, and renewable energy sectors. With a voltage ratio of 33 kV primary to 11 kV secondary, this unit ensures precise, stable energy conversion in regions like the U.S., Canada, Mexico, Brazil, Argentina, and Chile.

This transformer combines high-performance copper windings, sealed oil-immersed insulation, and robust mechanical construction to deliver maximum operational reliability. Ideal for demanding substation environments, it offers superior thermal capacity and resistance to environmental stress.

Key Benefits:

✅ Optimized for Heavy-Duty Performance
This transformer is designed for continuous operation under demanding electrical loads. Whether supplying industrial motors, utility feeders, or distributed generation systems, the 6000 kVA capacity delivers high ampacity with low energy loss.

✅ Built to Withstand Harsh Environments
With a fully enclosed, sealed oil tank and corrosion-resistant finish, it performs reliably in outdoor settings exposed to dust, moisture, temperature swings, and UV exposure. Radiator systems and pressure valves ensure safe oil operation.

✅ Meets International Certification Standards
Manufactured to strict specifications conforming to IEC 60076, ANSI C57, UL, CSA, and IEEE standards. Ideal for North and South American projects that require traceable certification for compliance and safety.

✅ Flexible Engineering Options
Available with custom tap changer settings (±5%), Dyn11 vector group, and adaptable termination options including cable boxes or porcelain bushings. Voltage and cooling systems can be configured to match specific site conditions.

✅ Quiet Operation with Enhanced Efficiency
Equipped with high-grade core laminations and vacuum-dried windings, the unit ensures minimal no-load noise and excellent energy efficiency. This makes it suitable for installation in commercial areas, near residential zones, or within industrial parks.

✅ Tailored for Regional Grid Requirements
Voltage range, insulation levels, and connection groups are designed to match utility protocols across the Americas, making it ideal for deployment in both public and private substations.

Whether you’re installing in a solar plant in Mexico, an industrial complex in Argentina, or a municipal grid expansion in Texas, the Energy Transformer 6000 kVA 33/11 kV copper wound oil-filled transformer delivers the durability, safety, and performance your project demands.

👉 Get in touch today for technical consultation, pricing, delivery timelines, or a customized substation transformer proposal tailored to your region and application.