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The SCB10-1250kVA/10kV all-aluminum dry-type transformer represents the perfect synergy of robust 1250kVA power delivery and ultimate cost-effectiveness. By utilizing highly optimized aluminum winding structures paired with premium vacuum-cast epoxy resin, it delivers reliable, oil-free, and flame-retardant distribution. Meeting Tier 2 (NX2) energy efficiency standards, it drastically lowers both initial capital expenditure and operational costs. It is the premier choice for 10kV indoor substations, commercial high-rises, standard industrial production lines, and data center support hubs.
Core Parameters:
• Capacity & Voltage: 1250kVA | 10kV stepping down to 0.4kV.
• Energy Efficiency: Tier 2 Efficiency (SCB10 Series, GB 20052-2024 NX2).
• Structure: All-Aluminum Windings + High-Strength Resin Cast (IP30+ Enclosures available).
Product Features

Utilizing an all-aluminum winding architecture drastically reduces material costs while maintaining stringent 1250kVA operational performance, making it the perfect choice for budget-constrained projects.

Fully complies with GB 20052-2024 Tier 2 (NX2) standards. Optimizations in the core and aluminum windings keep both no-load and load losses at excellent industry baselines.

100% oil-free design using vacuum-cast epoxy resin. It is completely flame-retardant and self-extinguishing, ensuring absolute safety for populated indoor electrical rooms.

Aluminum’s lower density makes this 1250kVA unit significantly lighter than its copper equivalent. This eases logistical transport, handling, and reduces the load-bearing requirements for installation floors.

Tailored for indoor excellence. Can be supplied with IP30 or higher protective steel enclosures with precision temp-monitoring to shield the unit in complex indoor facilities.

Enjoy full-lifecycle support including precise pre-sales capacity modeling, factory inspection invitations, and a guaranteed rapid technical response for any operational inquiries.
Key Specifications (SCB10-1250kVA Single Unit)
| Parameter | Typical Value | Description |
| Rated Capacity | 1250kVA | Sufficient capacity to power mid-large factory lines or commercial central grids. |
| Rated Voltage | HV: 10kV LV: 0.4kV | Highly precise distribution output to directly power 3-phase hubs. |
| No-Load Loss | Approx. 2.2kW | Reliably low idle energy waste through high-grade silicon steel construction. |
| Load Loss (120℃) | Approx. 10.5kW | Stable energy conversion efficiency under continuous 1250kVA distribution loads. |
| Winding Material | High-Quality Aluminum | Optimized large cross-section design to ensure parity in thermal and electrical performance. |
| Protection Structure | IP00 (Open) / IP30+ (Enclosed) | Supplied with optional protective casings tailored to your specific indoor conditions. |
[Image of all-aluminum dry-type transformer]
Full Series Technical Reference (SCB10 Aluminum Platform: 30kVA ~ 3150kVA)
| Capacity (kVA) | Impedance (%) | No-Load Loss (W) | Load Loss (W) | Total Weight (kg) | Dimensions W×D×H (mm) |
| 30 | 4.0 | 180 | 600 | 230 | 800×600×900 |
| 50 | 4.0 | 240 | 870 | 290 | 850×650×950 |
| 100 | 4.0 | 380 | 1500 | 480 | 950×700×1000 |
| 160 | 4.0 | 540 | 2000 | 680 | 1050×750×1050 |
| 200 | 4.0 | 620 | 2400 | 800 | 1100×800×1100 |
| 250 | 4.0 | 720 | 2800 | 950 | 1150×800×1150 |
| 315 | 4.0 | 880 | 3400 | 1100 | 1200×850×1200 |
| 400 | 4.0 | 980 | 4100 | 1300 | 1250×900×1250 |
| 500 | 4.0 | 1160 | 4900 | 1550 | 1300×950×1300 |
| 630 | 4.5 | 1340 | 6200 | 1750 | 1350×1000×1350 |
| 800 | 4.5 | 1520 | 7500 | 2050 | 1400×1000×1400 |
| 1000 | 4.5 | 1770 | 8800 | 2400 | 1450×1050×1450 |
| 1250 | 4.5 | 2090 | 10800 | 2800 | 1550×1100×1550 |
| 1600 | 4.5 | 2450 | 13200 | 3400 | 1650×1150×1650 |
| 2000 | 4.5 | 3000 | 16000 | 4000 | 1750×1250×1800 |
| 2500 | 4.5 | 3600 | 19500 | 4800 | 1850×1300×1900 |
| 3150 | 4.5 | 4300 | 24000 | 5900 | 2000×1400×2100 |
* The table above represents the SCB10 all-aluminum platform. Notice that the total weight across all capacities is inherently lighter than standard copper equivalents, making installation and logistics significantly easier and more cost-effective.
FAQ
Yes, absolutely. While copper is the traditional standard, modern SCB10 all-aluminum dry-type transformers are engineered to be 100% safe, reliable, and incredibly cost-effective:
1) Enlarged Conductor Cross-Section: Because aluminum has slightly lower conductivity than copper, the aluminum coils in our SCB10 series are specifically designed with a much larger cross-sectional area. This guarantees that they can carry the exact same 1250kVA electrical load as a copper winding without generating excess heat or sacrificing capacity.
2) Advanced Argon Arc Welding: The connections between the aluminum coils and the terminal blocks utilize highly advanced argon arc welding processes. This prevents the oxidation and loosening that plagued old aluminum wiring, ensuring a permanent, low-resistance connection.
3) The Economic & Weight Advantage: Aluminum is significantly lighter and far less susceptible to the wild price fluctuations of global copper markets. By choosing the all-aluminum SCB10, you secure a reliable, Tier 2 efficient transformer at a highly competitive capital cost, while also reducing the load-bearing requirements for your installation floors.
Aluminum dry type transformer features lighter weight and competitive material cost, bringing better cost control for projects. It adopts air cooling structure without oil, eliminating leakage risk. With good heat dissipation performance, it suits indoor installation. The winding has stable insulation and meets fire safety requirements for commercial and industrial power distribution systems.
Aluminum dry type transformers are widely used in power distribution for shopping malls, hospitals, data centers, and industrial workshops. Since there is no insulating oil, they can work in places with strict fire protection demands. They can also adapt to environments with moderate humidity and dust, supporting stable power conversion for low and medium voltage power supply systems.
This aluminum dry type transformer needs relatively simple routine maintenance. Users only need to regularly clean dust on winding surfaces and check the tightness of connection terminals. No oil replacement or oil quality inspection is required. Periodic insulation resistance testing helps keep long-term stable operation and effectively reduce daily operation and maintenance workload.
Our aluminum dry type transformer is designed with reinforced winding structure to resist short-circuit forces. The aluminum windings are firmly fixed and matched with high-strength insulation materials. It can endure specified short-circuit current impact within standard time. We conduct strict type tests before delivery to guarantee safety under transient circuit fault conditions.

Whatsapp: +86-13961294414
E-mail: junqiu.wang@czguanghui.cn
jocelyn.duan@czguanghui.cn
ADD: No. 1, Yulong Middle Road, Xuejia Town, Xinbei District, Changzhou City, China
Mobile: 0086-15380068868