Product Overview
About Environmental-protection dry-type power transformer
Our SG(B)10 series environmental-protection dry-type distributing transformers are engineered for high-performance in demanding environments.
Superior Durability: Strong resistance to thermal shock and outstanding overload capability.
Eco-Friendly & Safe: Flame-retardant, low-loss design with minimal partial discharge. No harmful gases or pollution.
Adaptive Design: Moisture-proof and dust-insensitive, ensuring no cracks even in adverse conditions.
Maintenance-Free: Compact structure designed for long-term, easy maintenance.
- Eco-Friendly Resin: Non-toxic, flame-retardant, and recyclable.
- Low Noise (≤45dB): Ultra-quiet design for sensitive urban areas.
- Energy Saving: Reduced no-load loss, compliant with Eco-standards.
- Zero Pollution: No oil leakage risks, zero harmful gas emission.
- Long Operational Lifespan
- Maintenance-Free: Compact and durable for 20+ years of service.
- High Reliability: Strong thermal shock and moisture resistance.
Versatile Applications
Specifically designed for high-safety and heavy-load environments, including:
Infrastructure: Airports, Power Plants, and Skyscrapers.
Sensitive Areas: Hospitals, Residential Areas, and Shopping Centers.
Heavy Industry: Metallurgy, Chemical Industries, and Nuclear Power Plants.
High-Performance Transformer Core
Grain-Oriented Silicon Steel: Imported, cold-rolled materials for low no-load loss.
45° Full-Inclined Joint: Precision engineering to minimize noise and vibration.
Rust-Proof Treatment: Special surface coating ensures a corrosion-free lifespan.
No-Punch Clamping: Tensile rod structure with flexible pads for enhanced stability.
Premium HV & LV Coil Materials
Advanced Insulation: Coils are insulated with high-grade Nomex material, ensuring superior thermal stability and safety.
VPI Process: Dipped in solvent-free resin via Vacuum Pressure Impregnation (VPI) and solidified through high-temperature baking for maximum mechanical strength.
Optimized Design: The HV coil features a continuous structure for excellent heat dissipation, avoiding thermal runaway even under heavy loads.
Moisture-Proof & Recyclable: The LV foil/helix structure provides exceptional moisture resistance and is fully decomposable and recyclable.
High Reliability: Designed to eliminate partial discharge and cracking, ensuring long-term operational safety.
Protective Enclosure & Shielding
Versatile Protection: Available in IP20, IP23, and custom grades for any environment.
Premium Materials: Built with high-strength cold-rolled or stainless steel.
Flexible Outlets: Supports bus bar systems with side, top, or custom cable entries.
Safety & Cooling: Engineered for maximum protection and efficient heat dissipation.
Technical FAQ & Support:
How does the transformer prevent overheating?
For units 315 kVA and above, we install a digital temperature monitoring system. High-precision sensors embedded in the LV windings provide real-time tracking and will trigger an automatic alarm or trip if thermal limits are exceeded to ensure equipment safety.
Can this dry-type transformer handle temporary overloads?
Yes. Thanks to advanced insulation materials and optimized heat dissipation, the SG(B)10 series can operate safely at 120% overload for extended periods. Under IP23 conditions, it maintains reliable performance even without auxiliary fan cooling.
Is the SG(B)10 transformer safe for indoor use?
Absolutely. It is built with flame-retardant, self-extinguishing epoxy resin that releases no toxic gases in fire. It is an ideal, high-safety power solution for hospitals, skyscrapers, and shopping centers.
What makes your transformers more reliable than standard models?
We use a VPI (Vacuum Pressure Impregnation) process and premium Nomex insulation. This combination prevents cracking, eliminates partial discharge, and ensures the transformer remains moisture-proof even in harsh industrial environments.
Can it operate in high-humidity or coastal areas?
Yes. The core and windings are treated with a special anti-corrosion and moisture-proof coating. This ensures the transformer starts up instantly even after long periods of inactivity in damp conditions without needing pre-drying.
How much space is required for installation?
The SG(B)10 features a compact structural design, making it significantly smaller and lighter than traditional dry-type models. This reduces the footprint in your electrical room and lowers transportation and installation costs.
Are the materials used in the transformer recyclable?
Yes. Over 90% of the materials, including the core and windings, are fully recyclable. The design focuses on low energy loss and zero environmental pollution, aligning with modern green energy standards.
Do you support customized cable connections?
Yes. We offer flexible outgoing wire options including standard bus bars, top-entry, or side-entry configurations. Our engineers can customize the terminal layout to match your specific site requirements and existing switchgear.
Customized Solutions/Service
This Service Include
- Precision Customization
- Factory Test Report
- 2-Year Warranty
- Technical Installation Guide
Contact Our Transformer Experts
Request a customized high-efficiency transformer solution or get immediate support from our global engineering team.
Technical Specifications for the 10kV SG(B)10H Series Eco-Friendly Dry-Type Transformers
| Rated Capacity (kVA) | Voltage Group (kV) | Connection Method | No-load Loss (kW) | Load Loss (145℃) (kW) | No-load Current (%) | Impedance Voltage (%) | Insulating Level | Weight (kg) |
|---|---|---|---|---|---|---|---|---|
| 80 | High: 11/10.5/10/6.3/6 Low: 0.4 | Dyn11 or Yyno | 0.39 | 1.75 | 2.8 | 4 | H/H | 490 |
| 100 | High: 11/10.5/10/6.3/6 Low: 0.4 | Dyn11 or Yyno | 0.40 | 1.88 | 2.4 | 4 | H/H | 520 |
| 125 | High: 11/10.5/10/6.3/6 Low: 0.4 | Dyn11 or Yyno | 0.48 | 2.13 | 2.0 | 4 | H/H | 650 |
| 160 | High: 11/10.5/10/6.3/6 Low: 0.4 | Dyn11 or Yyno | 0.56 | 2.55 | 1.8 | 4 | H/H | 740 |
| 200 | High: 11/10.5/10/6.3/6 Low: 0.4 | Dyn11 or Yyno | 0.62 | 3.10 | 1.8 | 4 | H/H | 850 |
| 250 | High: 11/10.5/10/6.3/6 Low: 0.4 | Dyn11 or Yyno | 0.72 | 3.60 | 1.8 | 4 | H/H | 1005 |
| 315 | High: 11/10.5/10/6.3/6 Low: 0.4 | Dyn11 or Yyno | 0.88 | 4.60 | 1.8 | 4 | H/H | 1270 |
| 400 | High: 11/10.5/10/6.3/6 Low: 0.4 | Dyn11 or Yyno | 0.97 | 5.40 | 1.8 | 4 | H/H | 1470 |
| 500 | High: 11/10.5/10/6.3/6 Low: 0.4 | Dyn11 or Yyno | 1.16 | 6.60 | 1.8 | 4 | H/H | 1750 |
| 630 | High: 11/10.5/10/6.3/6 Low: 0.4 | Dyn11 or Yyno | 1.35 | 7.90 | 1.6 | 6 | H/H | 1970 |
| 800 | High: 11/10.5/10/6.3/6 Low: 0.4 | Dyn11 or Yyno | 1.52 | 9.50 | 1.6 | 6 | H/H | 2350 |
| 1000 | High: 11/10.5/10/6.3/6 Low: 0.4 | Dyn11 or Yyno | 1.76 | 11.40 | 1.3 | 6 | H/H | 2620 |
| 1250 | High: 11/10.5/10/6.3/6 Low: 0.4 | Dyn11 or Yyno | 2.08 | 12.50 | 1.3 | 6 | H/H | 3180 |
| 1600 | High: 11/10.5/10/6.3/6 Low: 0.4 | Dyn11 or Yyno | 2.44 | 13.90 | 1.3 | 6 | H/H | 4100 |
| 2000 | High: 11/10.5/10/6.3/6 Low: 0.4 | Dyn11 or Yyno | 3.32 | 17.50 | 1.2 | 6 | H/H | 4500 |
| 2500 | High: 11/10.5/10/6.3/6 Low: 0.4 | Dyn11 or Yyno | 4.00 | 20.30 | 1.2 | 6 | H/H | 5340 |
Technical Specifications for the 10 kV SGZ(B)10H Series Environmentally Friendly On-Load Tap-Changing Dry-Type Transformer
| Rated Capacity (kVA) | Voltage Group (kV) | Connection Method | No-load Loss (kW) | Load Loss (145℃) (kW) | No-load Current (%) | Impedance Voltage (%) | Insulating Level | Weight (kg) |
|---|---|---|---|---|---|---|---|---|
| 200 | High: 11/10.5/10/6.3/6 Low: 0.4 | Dyn11 or Yyno | 0.65 | 3.10 | 1.8 | 4 | F/F | 1370 |
| 250 | High: 11/10.5/10/6.3/6 Low: 0.4 | Dyn11 or Yyno | 0.75 | 3.60 | 1.8 | 4 | F/F | 1520 |
| 315 | High: 11/10.5/10/6.3/6 Low: 0.4 | Dyn11 or Yyno | 0.92 | 4.60 | 1.8 | 4 | F/F | 1790 |
| 400 | High: 11/10.5/10/6.3/6 Low: 0.4 | Dyn11 or Yyno | 1.00 | 5.40 | 1.8 | 4 | F/F | 2000 |
| 500 | High: 11/10.5/10/6.3/6 Low: 0.4 | Dyn11 or Yyno | 1.20 | 6.60 | 1.8 | 4 | F/F | 2270 |
| 630 | High: 11/10.5/10/6.3/6 Low: 0.4 | Dyn11 or Yyno | 1.40 | 7.90 | 1.6 | 6 | F/F | 2530 |
| 800 | High: 11/10.5/10/6.3/6 Low: 0.4 | Dyn11 or Yyno | 1.55 | 9.50 | 1.6 | 6 | F/F | 2930 |
| 1000 | High: 11/10.5/10/6.3/6 Low: 0.4 | Dyn11 or Yyno | 1.82 | 11.40 | 1.3 | 6 | F/F | 3200 |
| 1250 | High: 11/10.5/10/6.3/6 Low: 0.4 | Dyn11 or Yyno | 2.12 | 12.50 | 1.3 | 6 | F/F | 3770 |
| 1600 | High: 11/10.5/10/6.3/6 Low: 0.4 | Dyn11 or Yyno | 2.50 | 13.90 | 1.3 | 6 | F/F | 4720 |
| 2000 | High: 11/10.5/10/6.3/6 Low: 0.4 | Dyn11 or Yyno | 3.40 | 17.50 | 1.2 | 6 | F/F | 5170 |
| 2500 | High: 11/10.5/10/6.3/6 Low: 0.4 | Dyn11 or Yyno | 4.10 | 20.30 | 1.2 | 6 | F/F | 5860 |