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The dry-type substation transformer is the core power distribution equipment tailored specifically for medium and small-scale substations. Utilizing enhanced resin-cast insulation and a high-strength, compact substation cabinet design, it merges the eco-friendly, zero-fire-risk benefits of dry-type equipment with high centralized distribution stability. It is exceptionally well-suited for industrial plant substations, commercial complex main centers, high-rise utility stations, and renewable energy prefab substations. It guarantees steady performance in standard climates (-25℃ to 40℃).
Core Parameters:
• Energy Efficiency: Tier 2 Efficiency (Complies with GB 20052-2024).
• Structure: Resin Cast + Substation-Grade Compact Cabinet (Weighs ≤1500kg for ≤1250kVA).
• Warranty: 3-Year Standard Warranty.
Product Features
Custom modular and compact cabinet design tailored specifically for indoor substations. Units ≤1250kVA weigh ≤1500kg, smoothly integrating into prefabricated substations to save massive infrastructure space.
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 precision temp controllers, surge/short-circuit protection, and anti-condensation gear. Guarantees stability within centralized distribution clusters.
No oil testing or replacement required. A simple semi-annual visual check and dust wipe of the cooling channels are sufficient, making it perfect for semi-unattended centralized power nodes.
Can be fitted with an integrated substation smart monitoring module to remotely track winding temperatures, load currents, and insulation status, directly merging into broader smart-grid management systems.
Detailed Description
The dry-type substation transformer is an engineered masterclass designed specifically to act as the primary power node inside medium and small-scale substations. Its standout feature is its substation-ready compact cabinet structure. Crafted with highly reinforced, anti-condensation materials, it protects the internal enhanced resin-cast insulation and copper windings from harsh centralized environments, while seamlessly integrating alongside standard high/low voltage switchgear.
Because it relies on advanced natural and forced air cooling rather than highly flammable oil, it provides uncompromised safety within critical indoor infrastructures. Operating smoothly between -25℃ to 40℃, the unit complies with Tier 2 efficiency norms, effectively slashing both no-load and load losses. Sporting a 1.2x overload capacity for 30 minutes, it capably absorbs sudden load spikes—guaranteeing stable, continuous power distribution for industrial plants, high-rises, and renewable energy clusters without ever needing a dedicated oil retention pit.
Standard SCB Series Technical Reference (≤1250kVA)
| Capacity (kVA) | Impedance (%) | No-Load Loss (W) | Load Loss (W) | Total Weight (kg) | Dimensions W×D×H (mm) |
| 100 | 4.0 | 220 | 1400 | 550 | 950×700×1000 |
| 200 | 4.0 | 340 | 2300 | 880 | 1100×800×1100 |
| 400 | 4.0 | 570 | 3900 | 1450 | 1250×900×1250 |
| 630 | 4.5 | 810 | 5880 | 1950 | 1350×1000×1350 |
| 800 | 4.5 | 980 | 7100 | 2300 | 1400×1000×1400 |
| 1000 | 4.5 | 1150 | 8600 | 2700 | 1450×1050×1450 |
| 1250 | 4.5 | 1350 | 10400 | 3200 | 1550×1100×1550 |
* The table displays standard SCB technology platform parameters. True substation cabinet models are highly customized to fit precisely within the switchgear lineup, with total weights (including cabinet) carefully optimized (e.g., ≤1500kg for mid-range units).
FAQ
Integrating a dry-type transformer into a substation or a prefabricated power station demands precise alignment, ventilation, and safety configurations:
1) Substation Layout Adaptation: The compact cabinet design allows it to sit directly alongside standard switchgear. However, you must maintain a safe electrical clearance from exposed high-voltage busbars and reserve a dedicated maintenance channel for safe personnel access during inspections.
2) Enclosure Ventilation: Even within a substation cabinet, the natural or forced air cooling systems require unhindered airflow. Ensure that the cabinet vents are not blocked by walls or other equipment. The substation room itself must have adequate exhaust fans to extract the ambient heat generated by the transformer under full load.
3) Handling & Positioning: Use designated forklift channels or small cranes to maneuver the unit into the substation space. Avoid bumping the exterior cabinet which houses sensitive temp controllers and surge protection modules.
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E-mail: junqiu.wang@czguanghui.cn
jocelyn.duan@czguanghui.cn
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