Evaporative Cooling Transformer
3 Dimension (3D) Wound Cores” are made from three identical single-core frames of trapezoidal silicon steel tape, wound into a compact triangular structure that eliminates air gaps. This innovative design ensures uniform flux flow, reduces total core weight, lowers no-load loss by 20-25%, and decreases excitation current by 50%, significantly minimizing reactive loss and improving the transformer’s power factor (Cos-phi).
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Description
Dry Type Transformer (20kV System Voltage)
| Parameter | Specification |
|---|---|
| Primary Voltage | 20 kV, 30 kV, 150 kV (compatible with Indonesia’s power system) |
| Secondary Voltage | 400V, 6.6 kV, 11 kV (based on distribution needs) |
| Power Capacity | 500 kVA – 50 MVA |
| Frequency | 50 Hz (PLN standard) |
| Efficiency | ≥ 98% (at full load) |
| Cooling Method | Evaporative Cooling (oil-free) |
| Insulating Medium | High-performance, non-flammable, environmentally friendly insulating liquid |
| Load Loss Reduction | Optimized cooling reduces operational losses without increasing copper consumption |
| Fire Safety | – Non-flammable, explosion-proof insulation liquid – Eliminates fire hazards in urban and industrial areas |
| Environmental Impact | – Non-toxic, low carbon footprint – Recyclable material, reducing waste |
| Noise Level | ≤ 55 dB (low noise, suitable for residential and commercial areas) |
| Operating Temperature | -10°C to 50°C (suitable for tropical climates) |
| Operating Altitude | ≤ 1000 m above sea level (higher altitudes available upon request) |
| Overload Capacity | High thermal stability, ensuring continuous operation during peak loads |
| Space Efficiency | Reduces substation footprint by more than 30% |
| Maintenance Requirements | Maintenance-free; no need for insulation liquid monitoring or replacement |
Technical Advantages in the Indonesian Environment
- Durability in Tropical Climate → Operates efficiently in hot and humid conditions.
- Fire Safety → Oil-free insulation reduces fire hazards in densely populated areas.
- Energy Efficiency → Supports Indonesia’s transition to green energy.
- Flexible Installation → Ideal for urban areas, airports, data centers, and renewable energy zones.
This transformer is designed to enhance power reliability and sustainability in Indonesia’s energy infrastructure.
Additional information
| Weight | 5580 kg |
|---|---|
| Dimensions | 360 × 220 × 240 cm |
| Capacity (kVa) | 200kVa, 250kVa, 315kVa, 400kVa, 500kVa, 630kVa, 800kVa, 1000kVa, 1250kVa, 1600kVa, 2000kVa, 2500kVa, 3000kVa, 3150kVa, 3500kVa, 4000kVa |
| Cooling Method | Dry-type Transformer |
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Oil Immersed Distribution Transformer
Transformer normal service conditions
The height above the sea level is below 1000m;
Highest air temperature +40ºC;
Highest daily average air temperature+30ºC;
Highest annual average air temperature +20ºC;
Lowest outdoor air temperature -5ºC.
(defines in detail when transformer in special service conditions )
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