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As a professional manufacturer of cast-resin dry-type transformers, we provide the highly reliable SCB10 series designed for centralized distribution grids. Manufactured under strict IEC standards, it utilizes vacuum epoxy casting and a high-strength cabinet structure, offering the perfect balance of Tier 2 energy efficiency and exceptional cost-effectiveness. It is completely oil-free, flame-retardant, and built to withstand harsh environments, including high altitudes up to 4000m and 90% humidity. It is widely supplied to medium/small substations, commercial high-rises, municipal utility stations, and industrial parks.
Core Parameters:
• Energy Efficiency: Tier 2 Efficiency (SCB10 Series, GB 20052-2024).
• Structure: Vacuum Resin Cast + Copper Foil Low Voltage Winding.
• Warranty & Support: 3-Year Warranty with 24-hour nationwide technical dispatch.
Manufacturer Core Advantages

Produced in our state-of-the-art vacuum epoxy casting facility. It operates 100% oil-free, rendering it entirely leak-proof, non-polluting, and inherently flame-retardant for safe indoor integration.

The SCB10 series complies with Tier 2 efficiency standards (NX2). It delivers exceptional baseline stability and lowers idle losses by 20% compared to legacy models, perfectly balancing budget and performance.

As the manufacturer, we support deep customizations to meet extreme operational demands, including high-altitude adaptations (up to 4000m) and ultra-high humidity (≤90%) resistance.

The low-voltage coils are wound using imported premium copper foil, significantly enhancing the unit's resistance to sudden short-circuit electromagnetic impacts.

With no insulating oil to monitor or replace, operational maintenance is reduced to simple visual checks and occasional fan dust wiping, ideal for semi-unattended substations.

We bypass the middleman. Enjoy direct technical consultations, factory inspection invitations, and an ironclad 24-hour on-site dispatch protocol for any critical malfunctions.
Key Specifications (SCB10 Series)
| Parameter | Typical Value | Description |
| Energy Efficiency | Tier 2 (GB 20052-2024 NX2) | The standard for budget-conscious, highly stable distribution grids. |
| Rated Voltage | HV: 10kV / 20kV LV: 0.4kV | Highly precise distribution output to directly power commercial and industrial hubs. |
| No-Load Loss | Approx. 0.2kW ~ 4.3kW | Reliably low idle energy waste through high-grade silicon steel construction. |
| Load Loss (120℃) | Approx. 1.5kW ~ 24.0kW | Stable energy conversion efficiency under continuous distribution loads. |
| Partial Discharge | ≤ 10pC | Vacuum resin casting ensures foundational insulation safety and a long lifespan. |
| Environmental Limits | Customizable (Alt ≤4000m) | Manufacturer direct customization ensures safe operation even in extreme high-altitude areas. |
Full Series Technical Reference (SCB10 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 | 250 | 800×600×900 |
| 50 | 4.0 | 240 | 870 | 320 | 850×650×950 |
| 100 | 4.0 | 380 | 1500 | 550 | 950×700×1000 |
| 160 | 4.0 | 540 | 2000 | 750 | 1050×750×1050 |
| 200 | 4.0 | 620 | 2400 | 880 | 1100×800×1100 |
| 250 | 4.0 | 720 | 2800 | 1050 | 1150×800×1150 |
| 315 | 4.0 | 880 | 3400 | 1250 | 1200×850×1200 |
| 400 | 4.0 | 980 | 4100 | 1450 | 1250×900×1250 |
| 500 | 4.0 | 1160 | 4900 | 1700 | 1300×950×1300 |
| 630 | 4.5 | 1340 | 6200 | 1950 | 1350×1000×1350 |
| 800 | 4.5 | 1520 | 7500 | 2300 | 1400×1000×1400 |
| 1000 | 4.5 | 1770 | 8800 | 2700 | 1450×1050×1450 |
| 1250 | 4.5 | 2090 | 10800 | 3200 | 1550×1100×1550 |
| 1600 | 4.5 | 2450 | 13200 | 3800 | 1650×1150×1650 |
| 2000 | 4.5 | 3000 | 16000 | 4500 | 1750×1250×1800 |
| 2500 | 4.5 | 3600 | 19500 | 5300 | 1850×1300×1900 |
| 3150 | 4.5 | 4300 | 24000 | 6500 | 2000×1400×2100 |
* The table above displays the complete parameter range for the standard SCB10 manufacturer platform. Dimensions and weights serve as a precise reference for electrical room space planning.
FAQ
Operating electrical equipment at high altitudes presents two major physical challenges: reduced air density impairs cooling efficiency, and lower air pressure drastically reduces the air's insulation (dielectric) strength. We implement two critical manufacturing customisations to solve this:
1) Upgraded Insulation Clearances: Standard electrical clearances are designed for sea level. At 4000m, air breaks down much easier. We purposefully increase the physical creepage distance and air clearance between the high-voltage phases, and between the windings and the grounded core, ensuring no arcing occurs in the thin mountain air.
2) Enhanced Thermal Derating Design: Thinner air cannot carry heat away as effectively as dense air. If a standard transformer operates at high altitude, it will overheat. We utilize larger copper cross-sections to generate less heat initially and increase the surface area of the resin-cast cooling channels to compensate for the poor convection, guaranteeing the transformer runs cool and delivers its full rated capacity.

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