2025-08-07
If you need a transformer, please provide us with the specific parameters so that we can obtain the exact price. Here are the typical specifications for a 500 kVA transformer and an overview of pricing factors (exact prices vary significantly).
Typical 3-Phase Distribution Transformer
1. Rated Capacity: 500 kVA
2. Frequency: 50 Hz or 60 Hz (region-dependent).
3. Primary Voltage (HV): Common: 11 kV, 22 kV, 33 kV (or 6.6 kV, 13.8 kV, 34.5 kV).
4. Secondary Voltage (LV): Standard: 400V/230V (Europe/Asia), 480V/277V (USA).
5. Vector Group: Dyn11 (common), Yyn0, Dyn5 (depends on earthing requirements).
6. Impedance (%Z): Typically 4–6% (specified for fault current limiting).
7. Cooling Class:
- ONAN: Oil-natural, air-natural (most common).
- ONAF: Oil-natural, air-forced (fans for higher capacity).
8. Efficiency Class:
- IEC: Level T1 (standard), T2 (high efficiency).
- DOE 2016 (USA): Tier 2 or Tier 3 (high efficiency).
9. Winding Material: Copper (higher cost, better efficiency) or Aluminum (lower cost).
10. Insulation: Mineral oil (standard) or ester fluid (eco-friendly).
11. Protection: Built-in Buchholz relay, pressure relief valve, temperature indicators.
12. Tappings: ±5% or ±2.5% (adjustable under load/off-load).
13. Standards: IEC 60076, IEEE C57.12.00, IS 1180 (India), etc.
14. Enclosure: IP23 (weather-protected) or IP55 (dust/water resistant).
15. Weight: ~1,500–2,500 kg (oil + core).
16. Dimensions: Varies; e.g., 2m (L) x 1.5m (W) x 1.8m (H).
| Type | Price Range (USD) | Key Variables |
|---|---|---|
| Aluminum Winding | $10,000 – $18,000 | Standard efficiency, basic protection |
| Copper Winding | $15,000 – $30,000+ | Higher efficiency, better durability |
| Ester Fluid (Eco) | +25–40% | Biodegradable insulation fluid premium |
| Special Designs | +20–50% | Custom voltages, low noise (<65 dB), etc. |
1. Efficiency: High-efficiency (Tier 3/IE4) adds 15–30%.
2. Voltage Levels: Non-standard voltages (e.g., 6.6 kV/690V) increase cost.
3. Location: Prices vary by region (e.g., USA vs. Asia; tariffs, shipping).
4. Brand: Premium brands (Siemens, ABB, Schneider) cost 20–40% more.
5. Accessories: Temperature controllers, remote monitoring, etc.
6. Core Material: CRGO (standard) vs. amorphous metal (higher efficiency, +50–80% cost).
- Quotation Required: Suppliers need your exact specs (voltages, BIL, vector group, etc.).
- Market Volatility: Copper/oil prices fluctuate.
- Regional Variations: Taxes, import duties, and local demand impact pricing.
Recommendations:
1. Define Requirements: Specify voltages, efficiency class, and environmental conditions.
2. Consider TCO: Higher initial cost for copper/high-efficiency units saves energy long-term.
3. Lead Time: 8–16 weeks (longer for custom designs).
4. For a precise quote, contact transformer suppliers with your full specifications. Prices start at ~$10,000 for basic aluminum units but can exceed $30,000 for premium configurations.
