This 630kVA high-efficiency three-phase dry type power transformer is an air-cooled fully enclosed epoxy-cast electrical transformation device with Dyn11 connection group for 10kV to 0.4kV voltage conversion, which solves unstable grid voltage, high energy loss and fire hazard risks in photovoltaic stations, industrial parks and residential box substations, and boasts ultra-low no-load & load loss, flame-retardant insulation, low noise, maintenance-free operation and strong overload resistance.
Dry Type Transformers
630kVA High-Efficiency Three-Phase Dry Type Power Transformer
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Clear shipment tracking
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Rigorous quality inspection
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Has good after-sales service
Detailed Description
Production Feature
1.High-efficiency design with ultra-low no-load & load loss to cut long-term electricity costs.
2.Epoxy resin cast structure, flame retardant and explosion-proof for safe indoor use.
3.Maintenance-free sealed construction, saving labor and regular upkeep expenses.
4.Strong short-circuit resistance, low noise and stable full-load continuous operation.
5.Compliant with IEC standards, ideal for factories, residential blocks and commercial buildings.
Specifications of 630kVA High-Efficiency Three-Phase Dry Type Power Transformer
| Parameter | Value |
| Rated Capacity | 630kVA |
| Phase & Frequency | 3-phase, 50Hz |
| Primary / Secondary Rated Voltage | 10kV / 0.4kV |
| Connection Group | Dyn11 |
| Short-circuit Impedance | 4% |
| Voltage Regulation | Off-circuit tap changer, ±2×2.5% |
| Cooling Method | AN/AF (Air Natural / Air Forced) |
Why Choose Yiyue
- 1. Large modern factory base in Hefei, Anhui, automated production lines and annual output exceeding 30,000 units, supporting fast bulk order delivery and full OEM & ODM customization.
- 2. Fully certified with IEC 60076, ISO 9001, CE and RoHS, all certificates available for overseas customs clearance and international project bidding.
- 3. Strict 100% pre-delivery inspection, including insulation resistance test, transformer ratio test, load & no-load loss test and temperature rise test in strict accordance with IEC standards.
- 4. Flexible customization on power, voltage, frequency and unit structure, offering private brand authorization and exclusive supply for cross-border e-commerce sellers.
- 5. Complete global after-sales system with long-term core component warranty, remote technical support and sufficient spare parts inventory to minimize your operational risks.
Packaging And Transportation
Yiyue Electric implements standardized packaging and shipping management to protect transformers, switchgears, cables and electrical components throughout the entire delivery process, ensuring products arrive in intact condition.
Customized Packaging Solutions
- Small-sized products: Moisture-proof bubble wrap + reinforced cartons with anti-collision corner protectors
- Medium & large equipment: Stretch film sealing for full moisture resistance, with foam padding on vulnerable parts for shock absorption
- Heavy machinery & export shipments: ISPM15-compliant fumigated wooden cases secured with steel belts, suitable for long-distance international transit
All packages are marked with clear shipping marks and handling warnings for standard operation.
Production Lead Time
- Standard in-stock items: 5–7 working days upon payment confirmation
- Customized non-standard products: 7–15 working days after design confirmation & deposit
- Large orders with special requirements: Lead time subject to separate confirmation
Shipping Method Region Estimated Transit Time Remarks Sea Freight Southeast Asia 15–25 working days Port to port, FCL & LCL available Middle East 15–25 working days Port to port, FCL & LCL available North America 20–30 working days Port to port, FCL & LCL available Europe 25–35 working days Port to port, FCL & LCL available Oceania 20–30 working days Port to port, FCL & LCL available Africa 30–45 working days Port to port, FCL & LCL available Air Freight Southeast Asia 5–7 working days Airport to airport, for urgent orders Middle East 5–7 working days Airport to airport, for urgent orders North America 10–15 working days Airport to airport, for urgent orders Europe 7–15 working days Airport to airport, for urgent orders Africa 4–6 working days Airport to airport, for urgent orders Air Freight (Express) Worldwide Major Countries 3–7 working days Door-to-door, suitable for small spare parts
Yiyue Electric implements standardized packaging and shipping management to protect transformers, switchgears, cables and electrical components throughout the entire delivery process, ensuring products arrive in intact condition.
Customized Packaging Solutions
- Small-sized products: Moisture-proof bubble wrap + reinforced cartons with anti-collision corner protectors
- Medium & large equipment: Stretch film sealing for full moisture resistance, with foam padding on vulnerable parts for shock absorption
- Heavy machinery & export shipments: ISPM15-compliant fumigated wooden cases secured with steel belts, suitable for long-distance international transit
All packages are marked with clear shipping marks and handling warnings for standard operation.
Production Lead Time
- Standard in-stock items: 5–7 working days upon payment confirmation
- Customized non-standard products: 7–15 working days after design confirmation & deposit
- Large orders with special requirements: Lead time subject to separate confirmation
| Shipping Method | Region | Estimated Transit Time | Remarks |
| Sea Freight | Southeast Asia | 15–25 working days | Port to port, FCL & LCL available |
| Middle East | 15–25 working days | Port to port, FCL & LCL available | |
| North America | 20–30 working days | Port to port, FCL & LCL available | |
| Europe | 25–35 working days | Port to port, FCL & LCL available | |
| Oceania | 20–30 working days | Port to port, FCL & LCL available | |
| Africa | 30–45 working days | Port to port, FCL & LCL available | |
| Air Freight | Southeast Asia | 5–7 working days | Airport to airport, for urgent orders |
| Middle East | 5–7 working days | Airport to airport, for urgent orders | |
| North America | 10–15 working days | Airport to airport, for urgent orders | |
| Europe | 7–15 working days | Airport to airport, for urgent orders | |
| Africa | 4–6 working days | Airport to airport, for urgent orders | |
| Air Freight (Express) | Worldwide Major Countries | 3–7 working days | Door-to-door, suitable for small spare parts |
Applications
FAQs
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Is the S9 transformer suitable for new projects?
The S9 series is mainly recommended for replacement projects or markets with moderate energy-efficiency requirements. -
Can the transformer be customized?
Yes. We support customization for voltage, capacity, dimensions, cooling methods, and special environmental adaptations. Our engineers will work with you to finalize the specs based on your project needs. -
What standards do you follow?
We design and test to IEC 60076 and GB/T standards. For specific markets, we can also produce to ANSI, BS, DIN, or AS standards. Third-party inspections are welcome. -
What about the production?
Production is done in our 8,000㎡ Hefei plant. Standard lead time is 20–35 working days, with expedited options available. Factory acceptance testing is welcome before shipment.
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