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The 2500kVA cast-resin dry-type transformer is a core equipment designed for large-capacity distribution systems. Utilizing enhanced resin-cast insulation and a highly efficient forced air cooling system, it flawlessly merges zero-fire-risk environmental safety with immense, continuous load-bearing stability. It is the premier choice for large-scale distribution scenarios such as major industrial park main substations, massive commercial centers, high-density data centers, modern chemical plants, and city grid main lines. Operating consistently in environments from -25℃ to 40℃, it ensures uncompromised large-scale electrical transmission.
Core Parameters:
• Energy Efficiency: Tier 2 Efficiency (Complies with GB 20052-2024).
• Structure: Enhanced Resin Cast Insulation + Highly Efficient Forced Air Cooling.
• Warranty: 3-Year Standard Warranty.
Product Features
Fully oil-free enhanced resin-cast operation. Inherently flame retardant and self-extinguishing, utterly eradicating explosion hazards in highly populated commercial and industrial areas.
Meets Tier 2 efficiency. Large-section copper windings drastically reduce resistance losses. The solid resin structure naturally resists moisture and dust, yielding a design lifespan of 25+ years.
Equipped with comprehensive smart protection including temp controllers and surge protection devices. The fully enclosed thick enclosure guarantees stability in complex indoor or semi-outdoor setups.
2500kVA rating stably carries large-scale centralized loads. Features a 1.2x short-term overload capacity to seamlessly handle heavy industrial or commercial power peaks.
No oil testing or replacement required. Regular dust wiping of cooling channels and visual checks on the winding insulation state are all that's needed, keeping O&M costs exceptionally low.
Can be fitted with a smart monitoring system to remotely track winding temperatures, load currents, and insulation status, supporting fault warnings and minimizing manual patrols.
Key Specifications (2500kVA SCB13 Series)
| Parameter | Typical Value | Description |
| Rated Capacity | 2500kVA | Massive apparent power perfectly tailored for large industrial parks and commercial main branches. |
| Rated Voltage | HV: 10kV | LV: 0.4kV | Standard grid voltages, highly adaptable for varied regional distribution systems. |
| Vector Group | Dyn11 / Yyn0 | Mainstream connections ensuring seamless integration and balanced load supply. |
| Impedance | 4.5% ~ 6.0% | Effectively limits short-circuit currents, protecting downstream distribution equipment. |
| No-Load Loss | ≤ 2.45kW (SCB13) | Tier 2 compliant; ultra-low idle consumption significantly reduces electricity overhead. |
| Load Loss (120℃) | ≤ 19.00kW | Copper windings ensure minimal resistance, maximizing energy conversion under heavy load. |
| Winding Temp. Rise | ≤ 100K (Class F) | Resin insulation and robust air convection prevent heat-induced insulation degradation. |
| Noise Level | ≤ 55~60dB(A) | Shock-absorbing design creates an ultra-quiet footprint for its massive size. |
| Cooling Method | AF (Forced Air Cooling) | Highly efficient forced air cooling tailored for continuous large-capacity power distribution operations. |
Detailed Description
The 2500kVA cast-resin dry-type transformer (mainstream SCB13 series) is a three-phase, Tier 2 efficiency unit recognized as a premier choice for large-capacity distribution. Its defining advantage is absolute environmental safety combined with a high-capacity load-bearing structure. Utilizing a solid epoxy resin cast, it blocks out moisture and dust while delivering unmatched flame-retardant properties—eliminating the severe fire and leakage risks associated with oil-immersed alternatives.
Engineered with large-section copper windings and an advanced forced air (AF) cooling system, it achieves highly stable, low-loss operation. Operating smoothly across -25℃ to 40℃, it exhibits exceptional overload capabilities. Because of its modular design and highly efficient cooling, it is widely deployed in power-hungry zones such as massive commercial complexes, vast data centers, and precision industrial main stations.
SCB10 Type Parameters & Scenarios
| Parameter | Typical Value | Description |
| Energy Efficiency | GB 20052-2024 Tier 2 (NX2) | Adapts to basic energy-saving compliance requirements. |
| No-Load Loss | Approx. 2.60kW | Slightly higher than SCB13, fulfilling fundamental large-voltage needs. |
| Load Loss (120℃) | Approx. 19.00kW | Stable large-scale energy conversion under load. |
| Partial Discharge | ≤ 10pC | Reliable insulation performance, ensuring foundational operational safety. |
| Core Material | Standard High-Grade Silicon Steel | Balances magnetic permeability and cost for conventional operations. |
| Applicable Scenarios | Budget-limited, load ≤ 60% | Ideal for standard commercial blocks, bulk manufacturing hubs, and older grid upgrades. |
Standard SCB13 Series Technical Reference
| Capacity (kVA) | Impedance (%) | No-Load Loss (W) | Load Loss (W) | Total Weight (kg) | Dimensions W×D×H (mm) |
| 1000 | 4.5 | 1150 | 8600 | 2700 | 1450×1050×1450 |
| 1250 | 4.5 | 1350 | 10400 | 3200 | 1550×1100×1550 |
| 1600 | 4.5 | 1650 | 12800 | 3800 | 1650×1150×1650 |
| 2000 | 4.5 | 2050 | 15600 | 4500 | 1750×1250×1800 |
| 2500 | 4.5 | 2450 | 19000 | 5300 | 1850×1300×1900 |
| 3150 | 4.5 | 3000 | 23000 | 6500 | 2000×1400×2100 |
* The table displays standard SCB13 dry-type technology platform parameters. Dimensions and weights are for reference and may vary based on specific enclosure customizations.
FAQ
Installing a 2500kVA dry-type transformer requires focusing on massive structural handling, extensive layout adaptation, and highly efficient ventilation. Core precautions include:
1) Installation Layout Adaptation: Maintain a safe distance of ≥1.5m from surrounding electrical equipment and cables. Reserve a broader maintenance channel of ≥1.2m to ensure safe operational space for this large footprint.
2) Cooling Space Reservation: Ensure a clearance of ≥1.5m above the unit and ≥1.0m around the sides. Do not install in completely sealed spaces. Natural airflow must be unobstructed. Given its reliance on AF (forced air) cooling, the room must be equipped with adequate intake and exhaust ducts for optimal heat rejection.
3) Power Match & Grounding: Ensure the input/output voltages strictly match the 10kV grid. The enclosure and core must be reliably grounded with a resistance of ≤4Ω to provide uncompromised leakage protection.
4) Handling & Flexible Mounting: This unit is exceptionally heavy (approx. 5300kg). It must be handled strictly using dedicated heavy-duty lifting gear or heavy forklifts, ensuring no bumps occur to the resin windings. The ground must be flat, solid, and capable of bearing at least 5t/㎡. Use robust standard brackets to secure it; tilting can impair both insulation and cooling performance.
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E-mail: junqiu.wang@czguanghui.cn
jocelyn.duan@czguanghui.cn
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Mobile: 0086-15380068868
