A 1500pengubah kVA is a widely used power transformer in industrial, komersial, dan projek infrastruktur. It plays a key role in stepping voltage up or down to ensure stable and efficient power distribution. Whether you are planning a factory, a data center, or a large building, understanding the features and specifications of a 1500kVA transformer is essential.
It includes working principles, types, aplikasi, and a full specification table to help you choose the right model.

What Is a 1500kVA Transformer?
A 1500pengubah kVA is an electrical device with a rated apparent power of 1500 kilovolt-ampere (kVA). It transfers electrical energy between circuits using electromagnetic induction.
- 1500kVA = 1.5MVA
- It can supply medium to large loads
- Common in industrial plants and commercial buildings
The transformer changes voltage levels while keeping the frequency the same.
How Does a 1500kVA Transformer Work?
The transformer works based on a simple idea: aruhan elektromagnet.
Basic Working Steps:
- AC power flows into the primary winding
- It creates a magnetic field in the core
- The magnetic field induces voltage in the secondary winding
- Output voltage depends on the turns ratio
Key Formula:
- Nisbah voltan = Nisbah pusingan
- Kuasa kekal hampir malar (ignoring losses)
This allows safe and efficient power transmission.

Types of 1500kVA Transformers
There are several types of 1500kVA transformers based on cooling and insulation.
1. Transformer Rendam Minyak
- Uses mineral oil for cooling
- High efficiency
- Hayat perkhidmatan yang panjang
- Suitable for outdoor use
2. Pengubah Jenis Kering
- Disejukkan udara (tiada minyak)
- Safe and eco-friendly
- Used indoors (bangunan, hospitals)
3. Pengubah Resin Tuang
- Resin insulation
- High fire resistance
- Penyelenggaraan yang rendah
Main Components of a 1500kVA Transformer
A typical 1500kVA transformer includes:
- teras – Made of silicon steel sheets
- Windings – Copper or aluminum
- Insulation system
- Cooling system (oil or air)
- Tank and enclosure
- Sesendal
- Tap changer
Each part ensures stable operation and safety.

Standard Voltage Levels
A 1500kVA transformer can be designed for different voltage systems:
Voltan Utama Biasa:
- 33kV
- 22kV
- 11kV
- 6.6kV
Voltan Sekunder Biasa:
- 415V
- 400V
- 380V
- 220V
Full Specifications of 1500kVA Transformer
Below is a comprehensive specification table covering typical configurations.
Technical Specification Table
| item | Parameter | Nilai |
|---|---|---|
| Rated Power | Kapasiti | 1500kVA |
| Kekerapan | Standard | 50Hz / 60Hz |
| fasa | Jenis | Tiga fasa |
| Cooling Type | Pilihan | ONAN / HIDUP MATI / AN |
| Insulation Class | Standard | Kelas A / F / H |
| Kumpulan Vektor | Biasa | Dyn11 / ya0 |
| Impedans | tipikal | 5% – 8% |
| Kecekapan | At full load | ≥ 98% |
| Kenaikan Suhu | Minyak / Penggulungan | 55°C / 65°C |
| Ketik Penukar | Jenis | Tidak memuatkan / Atas beban |
| Tahap Kebisingan | tipikal | ≤ 60 dB |
| Protection Class | Kepungan | IP23 / IP54 |
Conductor and Current Ratings
The output current depends on voltage.
Example (400V output):
- Current = 1500 × 1000 ÷ (√3 × 400)
- ≈ 2165 A
Jadual Semasa
| Voltan Sekunder | semasa (A) |
|---|---|
| 415V | ~2088 A |
| 400V | ~2165 A |
| 380V | ~2279 A |
| 220V | ~3939 A |
Dimensi dan Berat (tipikal)
| Parameter | Nilai |
|---|---|
| Panjang | 1800 – 2400 mm |
| Lebar | 1200 – 1800 mm |
| Ketinggian | 1600 – 2200 mm |
| Jumlah Berat | 2500 – 5000 kg |
| Berat Minyak (if applicable) | 800 – 1500 kg |
Nota: Values vary by manufacturer and design.
Losses in a 1500kVA Transformer
Transformers have two main losses:
1. No-Load Loss (Core Loss)
- Occurs even without load
- Depends on core material
2. Load Loss (Copper Loss)
- Increases with current
- Depends on winding resistance
Nilai Kehilangan Biasa
| Jenis | Nilai |
|---|---|
| Kehilangan tanpa beban | 1.5 – 2.5 kW |
| Kehilangan beban | 10 – 18 kW |
Lower losses mean higher efficiency.

Applications of 1500kVA Transformer
A 1500kVA transformer is used in many fields:
Industrial Use
- Kilang pembuatan
- Kilang pemprosesan makanan
- Textile industries
Commercial Use
- Pusat beli-belah
- Bangunan pejabat
- Hotels
Infrastructure
- Hospital
- Lapangan terbang
- Pusat data
Sektor Tenaga
- Solar power systems
- Ladang angin
- Pencawang
Advantages of Using a 1500kVA Transformer
Kapasiti Tinggi
- Supports large loads
- Ideal for expansion projects
Kecekapan Tenaga
- Low losses
- Saves electricity costs
Kebolehpercayaan
- Stable voltage output
- Hayat perkhidmatan yang panjang
Fleksibiliti
- Works with many voltage systems
- Customizable design
Garis Panduan Pemasangan
Proper installation is important for safety and performance.
Perkara Utama:
- Install on a solid foundation
- Ensure proper ventilation
- Maintain safe clearance
- Use correct grounding
- Lindungi daripada kelembapan dan habuk
For oil transformers:
- Check oil level regularly
- Avoid leaks
Petua Penyelenggaraan
Regular maintenance increases lifespan.
Routine Checks:
- Periksa penebat
- Check temperature
- Monitor noise
- Test oil quality
Jadual Disyorkan:
- Monthly visual check
- Annual full inspection
How to Choose the Right 1500kVA Transformer
Apabila memilih transformer, pertimbangkan:
1. Load Requirement
- Calculate total load
- Add safety margin
2. Tahap Voltan
- Match your system voltage
3. Persekitaran Pemasangan
- Dalaman → Jenis kering
- Outdoor → Oil type
4. Kaedah Penyejukan
- Natural or forced cooling
5. Piawaian
- IEC / ANSI / GB compliance
Common Standards for 1500kVA Transformers
- IEC 60076
- ANSI C57
- GB/T 1094
These standards ensure quality and safety.
Cost Factors of 1500kVA Transformer
The price depends on:
- bahan (tembaga vs aluminium)
- Jenis penyejukan
- Brand and manufacturer
- Custom specifications
- Accessories (protection, pemantauan)
Typical price range:
- $10,000 – $40,000 (varies widely)
Soalan Lazim
1. Is 1500kVA suitable for a factory?
ya, it is ideal for medium-sized factories.
2. What is the lifespan?
Usually 20–30 tahun dengan penyelenggaraan yang betul.
3. Bolehkah ia digunakan di luar rumah?
ya, especially oil-immersed types.
4. What protection is needed?
- Overcurrent protection
- Temperature protection
- Surge protection
1500kVA transformer manufacturer
A 1500pengubah kVA is a reliable and efficient solution for medium to large power needs. It is widely used across industries due to its high capacity, fleksibiliti, dan ketahanan.
By understanding its specifications, aplikasi, and maintenance requirements, you can choose the right transformer for your project and ensure long-term performance.
We DOS Group Comany are 1500kVA transformer manufacturer.


