| Customization: | Available |
|---|---|
| Application: | Power, Electronic, Instrument, Lighting, Rectifier, Audio |
| Phase: | Three |
| Shipping Cost: | Contact the supplier about freight and estimated delivery time. |
|---|
| Payment Methods: |
|
|---|---|
| Support payments in USD |
| Secure payments: | Every payment you make on Made-in-China.com is protected by the platform. |
|---|
| Refund policy: | Claim a refund if your order doesn't ship, is missing, or arrives with product issues. |
|---|
Industry-leading Audited Factory
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
Certifications:
Product Parameters:
| Parameter Category | Parameter Name | Typical Value/Description |
|---|---|---|
| Rated Voltage | High Voltage (HV) Side | 35 kV ± 2×2.5% or ±5% (tapping range) |
| Low Voltage (LV) Side | 10.5 kV / 6.3 kV / 0.4 kV (depending on application) | |
| Rated Capacity | Transformer Capacity | 1000 kVA ~ 20,000 kVA (common range) |
| Vector Group | Winding Connection | Dyn11 / Yyn0 / YNd11 (based on system requirements) |
| Impedance Voltage | Short-Circuit Impedance (Uk%) | 6% ~ 10.5% (typical, adjusted by capacity and design) |
| No-Load Loss (P0) | Core Loss | 0.8 kW ~ 30 kW (correlates with capacity, e.g., ~1.2 kW for 1000 kVA, ~12 kW for 10,000 kVA) |
| Load Loss (Pk) | Copper Loss (at rated current) | 6 kW ~ 150 kW (correlates with capacity, e.g., ~10 kW for 1000 kVA, ~80 kW for 10,000 kVA) |
| Cooling Method | Cooling Type | ONAN (Oil-immersed self-cooling) / ONAF (Oil-immersed forced-air cooling) / OFAF (Forced-oil and air cooling) |
| Insulation Level | HV Power Frequency Withstand | 85 kV/1 min |
| HV Lightning Impulse Withstand | 200 kV (peak) | |
| LV Power Frequency Withstand | 35 kV/1 min (for LV 10 kV) / 3 kV/1 min (for LV 0.4 kV) | |
| Temperature Rise Limit | Top Oil Temperature Rise | ≤55 K (at 40°C ambient) |
| Winding Average Temperature Rise | ≤65 K (at 40°C ambient) | |
| Efficiency | Full-Load Efficiency | ≥98% ~ 99.5% (depends on capacity and design) |
| Noise Level | Sound Pressure Level (at 1 m) | ≤55 dB(A) ~ 75 dB(A) (higher noise for larger capacities, e.g., ~55 dB for 1000 kVA, ~70 dB for 10,000 kVA) |
| Weight | Core and Winding Weight | 3 t ~ 50 t (scales with capacity) |
| Oil Weight | 1 t ~ 20 t | |
| Total Weight | 5 t ~ 80 t | |
| Dimensions | Length × Width × Height | 2500~6000 mm × 2000~4000 mm × 3000~5000 mm (larger for higher capacities) |
| Oil Preservation System | Conservator Type | Sealed-type (nitrogen-filled or membrane) / Open-type conservator |
| Standards Compliance | Design Standards | GB 1094 / GB/T 6451 / IEC 60076 |
| Protection Class | Enclosure (for outdoor use) | IP54 (dust and water resistant) |
| Environmental Conditions | Ambient Temperature | -30°C ~ +40°C (operating range) |
| Altitude | ≤1000 m (derating or special design required for higher altitudes) | |
| Applications | Typical Use Cases | Substations, industrial power distribution, renewable energy step-up (wind/solar) |
| Additional Parameters | Partial Discharge Level | ≤10 pC (HV winding, per GB/T 7354) |
| On-Load Tap Changer (OLTC) | Optional (e.g., ±8×1.25% or ±4×2.5% tapping range) |
Our Advantages:
1. We have more than 10 years of manufacturing experience in the electric industry.
2. We have passed the "ISO9001 Quality System International Certification" and obtained a number of national authorized technology patents.
3. We have advanced transformer production and testing equipments, and innovative technology.
4. We have a group of professional R & D and design personnel, installation and after-sales team.
5. We can provide professional OEM & ODM service.
FAQ:
Q1: Are you a manufacture or trading company?
A1: Yes, we are manufacture dedicated to design customized for different country standard and production of a wide range of high quality transformers,switchgears ,power substations.Meanwhile we can also provide relevant accessories and components with quality guaranteed from our branch factories. We improve the design to make our products more competitive for the market but with better quality to ensure the long time performance.
Q2: How does your factory do regarding quality control and after-sales support?
A2: All the products will be 100% checked and tested before delivery. We also have inspection team to make videos with customers online or by email .All our products comply to strict tests, easy maintenance guaranteed. We also offer on-line after-sale service in case of any further problems.
Q3: When can I get the price?
A3: Usually we quote within 1 hour after we get your inquiry.For customized products that need special design, we will quote within 12 hours with details specification for confirming.
Q4: Can you manage the delivery directly to our country with DIP term?
A4:Yes,we have our own Logistics company that help to find a better solution for delivery and that make the delivery time more punctual and in lower cost.
Q5: Can I get guarantee of products after delivery?
A5: Yes, every product is 2-3 year quality warranted under customer correct using the products.
Q6. Do you have any Certificate?
A6: Yes. Each of our product has CE, 3C and CQC certificate. If you need any other Certificate, we can help you to apply it.
Q7: How can I pay you?
A7: The payment by T/T and L/C is acceptable.
){kind=link}