11kV/500kVA-800kVA Three-Phase Outdoor Type Oil-Immersed Distribution Transformer
The 11kV/500kVA-800kVA three-phase outdoor-type oil-immersed distribution transformer is a highly efficient power equipment designed specifically for outdoor power distribution applications. It reliably converts medium-voltage power into low-voltage power suitable for various commercial, industrial, and utility uses. Its robust design ensures stable operation under diverse climatic and operating conditions, making it ideal for harsh outdoor environments.
I. Structure and Design
Tank
- Constructed from high-strength steel plates , the tank offers excellent mechanical strength and tight sealing.
- Designed to resist erosion from wind, sand, and rain, preventing moisture and dust from entering the transformer.
- Features special anti-corrosion treatments on the surface to extend the equipment's service life.
Core
- Made from high-permeability, high-quality silicon steel sheets to minimize hysteresis and eddy-current losses.
- Utilizes a fully inclined joint structure to reduce core vibration and noise, enhancing stability.
- Optimized for high efficiency and reduced energy loss.
Windings
- Wound with high-purity copper or aluminum wires for superior electrical conductivity and mechanical strength.
- Designed with different winding methods to meet specific voltage and capacity requirements.
- Insulated with high-quality materials to ensure reliable electrical insulation and heat dissipation.
II. Performance Characteristics
High Efficiency and Energy Saving
- Optimized design and high-quality materials ensure low no-load and load losses , exceeding national standards.
- Reduces operating costs and improves energy utilization efficiency.
Strong Overload Capacity
- Capable of handling short-term overloads beyond the rated capacity to meet sudden power demands.
Excellent Heat Dissipation
- Oil-immersed design allows heat to transfer efficiently to the tank surface via transformer oil.
- Equipped with heat dissipation fins to increase the cooling area and improve heat dissipation efficiency.
Stable and Reliable Operation
- Undergoes strict factory testing and quality control to ensure stable performance under various conditions.
- Reduces failure rates and enhances power supply reliability.
III. Technical Parameters
Rated Capacity
- 500kVA and 800kVA models available.
Rated Voltage
- High-Voltage Side: 11kV
- Low-Voltage Side: Customizable (common options include 0.4kV).
Frequency
- 50Hz or 60Hz (customizable based on regional requirements).
Cooling Method
- ONAN (Oil Natural Air Natural) for efficient cooling.
Insulation Level
- High-voltage: LI 75 AC 35 kV
- Low-voltage: LI 20 AC 5 kV
Temperature Rise
- 55°C for windings and 50°C for oil under full load conditions.
Efficiency
- 98% or higher (depending on load conditions).
Standards Compliance
- Complies with IEC, IEEE, ANSI , and other international standards.
IV. Applications
- Industrial Power Distribution: Suitable for factories, manufacturing plants, and heavy industries.
- Commercial Use: Ideal for shopping malls, office buildings, and data centers.
- Renewable Energy Integration: Compatible with solar and wind power systems.
- Utility Networks: Designed for power grids and substations.
V. Advantages
1. Durability: Built to withstand harsh outdoor environments.
2. Customizable: Voltage and capacity options tailored to user needs.
3. Energy Efficient: Reduces operational costs and energy waste.
4. Low Maintenance: Robust design ensures long service life with minimal upkeep.
5. Global Standards: Complies with international safety and performance standards.
Rated
Capacity
(KVA) |
Voltage Combination |
Vector
Group |
No-load
Loss(KW) |
Load
Loss
(KW) |
No-load
Current
% |
Short-circuit
Impedance |
Weight (KG) |
High Voltage
(KA) |
High Voltage Tapping Range |
Low Voltage
(KA) |
Oil Weight |
Gross Weight |
| 30 |
20-10 |
±5x2.5%
±2x2.5% |
0.4 |
Dyn11 |
0.09 |
0.66 |
2.1 |
5.5 |
180 |
420 |
| 50 |
0.13 |
0.96 |
2 |
150 |
495 |
| 63 |
0.15 |
1.145 |
1.9 |
170 |
560 |
| 80 |
0.18 |
1.37 |
1.8 |
190 |
635 |
| 100 |
0.20 |
1.65 |
1.6 |
215 |
710 |
| 125 |
0.24 |
1.98 |
1.5 |
250 |
840 |
| 160 |
0.29 |
2.42 |
1.4 |
285 |
945 |
| 200 |
0.33 |
2.86 |
1.3 |
340 |
1125 |
| 250 |
0.40 |
3.35 |
1.2 |
390 |
1295 |
| 400 |
0.57 |
4.01 |
1.1 |
445 |
1475 |
| 500 |
0.57 |
4.73 |
1.0 |
6.0 |
515 |
1712 |
| 630 |
0.68 |
5.66 |
1.0 |
460 |
1995 |
| 800 |
0.81 |
6.82 |
0.9 |
565 |
2450 |
| 1000 |
0.98 |
8.25 |
0.8 |
635 |
2765 |
| 1250 |
1.15 |
11.33 |
0.7 |
840 |
3650 |
| 1600 |
1.35 |
13.20 |
0.7 |
970 |
4220 |
| 2000 |
1.63 |
15.95 |
0.6 |
1105 |
4800 |
| 2500 |
1.95 |
19.14 |
0.6 |
1205 |
5240 |
Audited Supplier 
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