S11-1600kVA 10kV Oil-Immersed Transformer
Voltage Ratio: 10±2×2.5% / 0.4 kV
Vector Group: Dyn11
Impedance Voltage: 4.5%
No-load Loss (S11): ≤2400 W
Load Loss (75℃)： ≤12800 W
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Henan GNEE Electric Co., Ltd. is one of the most reliable manufacturers and suppliers of s11-1600kva 10kv oil-immersed transformer in China. If you're going to buy customized s11-1600kva 10kv oil-immersed transformer made in China, welcome to get quotation from our factory. Quality products and reasonable price are available.
Designed for industrial plants, substations, renewable energy projects and utility distribution systems, the S11 1600kVA oil-filled transformer delivers low losses, reliable operation and full IEC 60076 compliance. Available with customized voltage ratios, vector groups and accessories for worldwide projects.
Core Selling Points of 1600kVA oil-Filled transformer
1.S11 standard energy efficiency, proven cost-effective design for global distribution projects
2.100% pure copper winding + high-grade CRGO silicon steel core
3.Fully sealed corrugated tank, Low Maintenance for outdoor installation
4.The Dyn11 connection symbol is used to avoid the influence of higher harmonics. It provides high resistance against uncompensated load and improves the quality of power supply.
24-hour technical response | Custom voltage & enclosure available | Global shipping support
Need a custom voltage or a fast turnaround? Our technical team is ready to tailor a solution for your specific project. Click below and get a detailed quote within 24 hours.
oil-immersed transformer Technical Parameter Table
| Item | Value | Compliance Standard |
|---|---|---|
| Rated Capacity | 1600 kVA | IEC 60076-1 |
| Rated Voltage Ratio | 10 ± 2×2.5% / 0.4 kV | IEC 60076-1 |
| Tap Changer Type | Off-circuit manual tap changer | IEC 60214-1 |
| Vector Group | Dyn11 | IEC 60076-1 |
| Low-voltage Rated Current | 2309 A | IEC 60076-1 |
| Impedance Voltage | 4.5% | IEC 60076-5 |
| No-load Loss (S11 Grade) | ≤ 2400 W | GB/T 25438 / IEC 60076-1 |
| Load Loss (75℃ Reference) | ≤ 12800 W | GB/T 25438 / IEC 60076-1 |
| No-load Current | ≤ 1.1% | GB/T 25438 |
| Cooling Method | ONAN (Natural Oil Natural Air) | IEC 60076-2 |
| Temperature Rise Limit | 65 K (winding) | IEC 60076-2 |
| Insulation Class | Class A | IEC 60076-1 |
| Tank Protection Degree | IP65 | IEC 60529 |
| Approximate Total Weight | ~ 3200 kg | - |
Certifications and Qualifications
- IEC 60076 series international standard type test certification
- ISO 9001:2015 Quality Management System Certification
- CE Conformity Certification
- Third-party accredited factory test report
- Full set of export commodity inspection documents support
Why Choose GNEE Electric 1600kVA Transformer?
| Comparison | GNEE Electric | Typical Suppliers |
|---|---|---|
| Copper winding | 100% OFC Copper | Copper/Aluminum |
| Silicon steel | Baosteel / WISCO CRGO | Standard CRGO |
| Routine Test | 100% Factory Tested | Partial |
| Type Test | Available | Optional |
| OEM Support | Yes | Limited |
| IEC60076 | ✔ | ✔ |
| Short Circuit Strength | High | Standard |
| Delivery | 10-15 Days | 20-40 Days |
Core Value Of GNEE Electric 1600kVA transformer
① Balanced Energy Efficiency & Investment
Proven S11 efficiency grade fully compliant with IEC 60076 and GB/T 25438 standards. Compared with traditional S9 series transformers, no-load loss is reduced by approximately 21%, saving around 5,700 kWh of electricity per year under continuous operation. It delivers an optimal balance between upfront procurement cost and long-term operating expense, making it the mainstream choice for bulk distribution and industrial projects.
② Strong Environmental Adaptability
Adopts a fully sealed corrugated tank structure that eliminates the need for routine core-lifting maintenance. The standard design adapts to ambient temperatures from -30°C to 45°C, and we offer customized solutions for high-temperature, high-humidity, high-altitude and dusty harsh environments, suitable for deployment in Southeast Asia, the Middle East, Africa and other global markets.
③ Long Service Life & High Reliability
100% pure copper winding matched with Class A insulation system, with strong short-circuit withstand capability and thermal stability. Under normal operating conditions and standard maintenance, the designed service life exceeds 30 years. The fully sealed structure prevents insulating oil from oxidation and moisture ingress, greatly extending the oil replacement cycle.
④ Full-Process Quality Control
Every unit passes 5 mandatory factory inspections before delivery: power frequency withstand voltage test, transformation ratio test, DC resistance test, no-load & load loss test, and insulating oil performance test. All test data is traceable and a full set of test reports is provided with each shipment.
Factory Test Report Preview
- Ratio Test
- Winding Resistance
- No-load Loss
- Load Loss
- Applied Voltage Test
- Induced Voltage Test
Want to see the full factory test report or discuss a specific installation challenge? Our engineers are available for a one-on-one consultation. Reach out now and get expert advice tailored to your site conditions.
Click to get the full test report
1600kVA oil-immersed transformer Structure
Core
Adopts high-grade grain-oriented electrical steel (CRGO) with step-lap stacking and full-mitered lap joint process. It effectively reduces no-load loss and excitation current, lowers operation noise, and ensures stable magnetic performance under long-term operation.
Winding
Made of high-purity oxygen-free copper wire with uniform current carrying capacity and low resistivity. Layer-to-layer insulation uses high-strength insulating paper, and the winding undergoes vacuum drying treatment to improve mechanical strength and short-circuit resistance, avoiding deformation under impact loads.
Tank
Corrugated fin fully sealed tank structure. The corrugated fins automatically compensate for oil volume expansion and contraction caused by temperature changes, eliminating the need for an oil conservator and reducing the risk of insulating oil oxidation and moisture ingress. The surface is treated with multi-layer anti-corrosion coating for long-term outdoor service.
Insulation System
Composite insulation structure composed of Class A insulating materials and high-quality mineral insulating oil. It has excellent dielectric strength and heat dissipation performance, effectively controls winding temperature rise, and ensures long-term reliable operation under rated load.
In addition to the robust core structure (iron core, windings, insulation, and tank), GNEE Electric equips this S11-1600kVA transformer with a complete set of high-quality auxiliary components to ensure reliable operation and easy maintenance.
- The on-load tap-changer (or off-circuit tap-changer, as per your requirement) allows flexible voltage regulation to accommodate grid fluctuations.
- The pressure relief valve promptly releases excessive internal pressure to prevent tank deformation or rupture, while the Buchholz relay provides instantaneous protection against internal faults such as oil leakage or winding overheating by triggering alarms or tripping.
- Furthermore, the radiator banks (with finned or corrugated panels) are optimally designed for efficient heat dissipation, ensuring the transformer maintains stable temperature even under continuous heavy loads.
- The high/low voltage bushings securely lead the winding terminations out of the tank and connect them to the external circuit while providing reliable electrical insulation.
- Additionally, the oil drain valve at the tank bottom facilitates oil sampling and draining, the earthing terminal ensures safe grounding of the tank
Typical Application Scenarios
Industrial Manufacturing
Ideal for medium-sized machinery plants, textile mills, food processing lines and building materials factories. The 1600kVA capacity perfectly matches the total load of a complete production line, and the S11 grade provides the most cost-effective power supply solution for industrial users.
Utility & Municipal Distribution
Used as backbone distribution nodes in 10kV urban and rural power grids, suitable for high-density residential communities, township central substations and grid expansion & renovation projects.
Renewable Energy Grid Integration
Applied as grid-connection distribution transformers for small and medium-sized distributed photovoltaic power stations and industrial & commercial energy storage systems, fully complying with 10kV grid integration technical requirements.
Ready to move forward or need a delivery schedule for your urgent project?
Contact our sales team now for a competitive price, full documentation package, and shipping plan. We respond to every inquiry within 24 hours.
Packing and Delivery
Core Protection: The transformer unit is encased in a high-strength, corrosion-resistant wooden crate. Both inner and outer layers are covered with waterproof and moisture-proof membranes, effectively isolating the unit from rainwater, humidity, and dust.
FAQ
What is the maximum continuous load of a 1600kVA 10kV transformer?
Under a standard 0.8 power factor, the 1600kVA oil immersed transformer can carry a continuous active load of 1280kW, with a low-voltage side rated current of 2309A. For industrial scenarios with impact loads, it is recommended to control the long-term load rate at 60%-80%.
What is the service life of an S11 1600kVA oil immersed transformer?
With standard installation, normal operation and periodic maintenance, the designed service life of this S11 1600kVA transformer exceeds 30 years. The fully sealed structure effectively slows down insulation aging and extends the actual service life.
Can this 1600kVA S11 transformer be used in high-temperature tropical regions?
Yes. We provide high-temperature adaptation customization, including upgraded insulation grade, optimized heat dissipation structure and high-temperature resistant insulating oil, suitable for long-term operation in environments up to 55°C.
What is the delivery time for S11 1600kVA 10kV oil transformers?
Standard S11 1600kVA units have a delivery lead time of 10–15 days for bulk orders; customized models are subject to specific technical requirements. We maintain regular stock of core components to ensure fast delivery for urgent projects.
GNEE Electric transformer Custom Configuration Options
| Configuration Item | Custom Options Available |
|---|---|
| Rated Capacity | 30–5000 kVA |
| Primary Voltage (HV) | 6.6 kV, 11 kV, 13.8 kV, 15 kV, 20 kV, 22 kV, 33 kV |
| Secondary Voltage (LV) | 0.415 kV, 0.433 kV, 0.48 kV, 0.69 kV, 3.3 kV, Customer Specified |
| Frequency | 50 Hz / 60 Hz |
| Cooling Method | ONAN, ONAF |
| Vector Group | Dyn11, YNyn0, YNd11, YNd1, Other IEC Vector Groups |
| Tap Changer | OCTC or On-Load Tap Changer (OLTC) |
| Impedance Voltage | 4%, 4.5%, 5%, 6%, Customized |
| Insulating Oil | Mineral Oil, FR3 Natural Ester Fluid, Silicone Oil |
| Ambient Temperature | Up to +55°C or Lower Temperature Design |
| Installation Environment | Outdoor / Indoor / High Altitude / Coastal / Desert / Tropical Climate |
| Protection & Monitoring | Temperature Indicator, Oil Level Gauge, Pressure Relief Valve, Buchholz Relay, Online Monitoring System |
| Enclosure Finish | C3, C4, C5 Corrosion Protection Systems |
| Paint Color | RAL7032, RAL5015, Customer Specified |
| Applicable Standards | IEC, ANSI/IEEE, BS, AS/NZS, Customer Specifications |
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