UN 1500transformateur kVA is a widely used power transformer in industrial, commercial, et projets d'infrastructures. 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, applications, and a full specification table to help you choose the right model.
What Is a 1500kVA Transformer?
UN 1500transformateur kVA is an electrical device with a rated apparent power of 1500 kilovolt-ampères (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: induction électromagnétique.
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:
- Rapport de tension = rapport de tours
- La puissance reste presque constante (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. Transformateur immergé dans l'huile
- Uses mineral oil for cooling
- High efficiency
- Longue durée de vie
- Suitable for outdoor use
2. Transformateur de type sec
- Refroidi par air (pas d'huile)
- Safe and eco-friendly
- Used indoors (bâtiments, hôpitaux)
3. Transformateur en résine coulée
- Resin insulation
- High fire resistance
- Low maintenance
Main Components of a 1500kVA Transformer
A typical 1500kVA transformer includes:
- Core – Made of silicon steel sheets
- Windings – Copper or aluminum
- Insulation system
- Cooling system (oil or air)
- Tank and enclosure
- Bushings
- Tap changer
Each part ensures stable operation and safety.
Standard Voltage Levels
A 1500kVA transformer can be designed for different voltage systems:
Tensions primaires communes:
- 33kV
- 22kV
- 11kV
- 6.6kV
Tensions secondaires communes:
- 415V
- 400V
- 380V
- 220V
Full Specifications of 1500kVA Transformer
Below is a comprehensive specification table covering typical configurations.
Technical Specification Table
| Article | Paramètre | Valeur |
|---|---|---|
| Rated Power | Capacity | 1500kVA |
| Fréquence | Standard | 50Hz / 60Hz |
| Phase | Taper | Triphasé |
| Cooling Type | Possibilités | ONAN / MARCHE ARRÊT / UN |
| Insulation Class | Standard | Classe A / F / H |
| Groupe vectoriel | Commun | Dyna11 / Oui0 |
| Impedance | Typique | 5% – 8% |
| Efficacité | At full load | ≥ 98% |
| Augmentation de la température | Huile / Enroulement | 55°C / 65°C |
| Changeur de robinet | Taper | Décharger / En charge |
| Niveau de bruit | Typique | ≤ 60 dB |
| Protection Class | Enceinte | IP23 / IP54 |
Conductor and Current Ratings
The output current depends on voltage.
Example (400V output):
- Current = 1500 × 1000 ÷ (√3 × 400)
- ≈ 2165 UN
Tableau actuel
| Tension secondaire | Actuel (UN) |
|---|---|
| 415V | ~2088 A |
| 400V | ~2165 A |
| 380V | ~2279 A |
| 220V | ~3939 A |
Dimensions et poids (Typique)
| Paramètre | Valeur |
|---|---|
| Longueur | 1800 – 2400 mm |
| Largeur | 1200 – 1800 mm |
| Hauteur | 1600 – 2200 mm |
| Poids total | 2500 – 5000 kilos |
| Poids de l'huile (if applicable) | 800 – 1500 kilos |
Note: 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
Valeurs de perte typiques
| Taper | Valeur |
|---|---|
| Perte à vide | 1.5 – 2.5 kW |
| Perte de charge | 10 – 18 kW |
Lower losses mean higher efficiency.
Applications of 1500kVA Transformer
A 1500kVA transformer is used in many fields:
Industrial Use
- Usines de fabrication
- Usines de transformation des aliments
- Textile industries
Commercial Use
- Centres commerciaux
- Immeubles de bureaux
- Hotels
Infrastructure
- Hôpitaux
- Aéroports
- Centres de données
Secteur de l'énergie
- Solar power systems
- Wind farms
- Sous-stations
Advantages of Using a 1500kVA Transformer
Haute capacité
- Supports large loads
- Ideal for expansion projects
Efficacité énergétique
- Low losses
- Saves electricity costs
Fiabilité
- Stable voltage output
- Longue durée de vie
La flexibilité
- Works with many voltage systems
- Customizable design
Directives d'installation
Proper installation is important for safety and performance.
Points clés:
- Install on a solid foundation
- Ensure proper ventilation
- Maintain safe clearance
- Use correct grounding
- Protéger de l'humidité et de la poussière
For oil transformers:
- Check oil level regularly
- Avoid leaks
Conseils d'entretien
Regular maintenance increases lifespan.
Routine Checks:
- Inspecter l’isolation
- Check temperature
- Monitor noise
- Test oil quality
Calendrier recommandé:
- Monthly visual check
- Annual full inspection
How to Choose the Right 1500kVA Transformer
When selecting a transformer, considérer:
1. Load Requirement
- Calculate total load
- Add safety margin
2. Niveau de tension
- Match your system voltage
3. Environnement d'installation
- Intérieur → Type sec
- Outdoor → Oil type
4. Méthode de refroidissement
- Natural or forced cooling
5. Normes
- CEI / ANSI / GB compliance
Common Standards for 1500kVA Transformers
- CEI 60076
- ANSI C57
- GB/T 1094
These standards ensure quality and safety.
Cost Factors of 1500kVA Transformer
The price depends on:
- Matériel (cuivre contre aluminium)
- Type de refroidissement
- Brand and manufacturer
- Custom specifications
- Accessories (protection, surveillance)
Typical price range:
- $10,000 – $40,000 (varies widely)
Foire aux questions
1. Is 1500kVA suitable for a factory?
Oui, it is ideal for medium-sized factories.
2. What is the lifespan?
Usually 20–30 ans avec un bon entretien.
3. Peut-il être utilisé à l'extérieur?
Oui, especially oil-immersed types.
4. What protection is needed?
- Overcurrent protection
- Temperature protection
- Surge protection
1500kVA transformer manufacturer
UN 1500transformateur kVA is a reliable and efficient solution for medium to large power needs. It is widely used across industries due to its high capacity, la flexibilité, et durabilité.
By understanding its specifications, applications, 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.