Voltage Class: 6kV / 10kV / 10.5kV / 11kV / 13.2kV — 0.4kV / 0.415kV / 0.433kV
Vector Group: Dyn11 / Yyn0 | Impedance: 4%, 6%, 8% | Insulation: Class F/F
This medium voltage to low voltage dry-type distribution transformer is engineered for mission-critical power environments, including data centers, industrial plants, commercial high-rises, and renewable integration points. It delivers reliable step-down power conversion with low losses, high thermal stability, and flexible vector group selection.
Designed to meet international standards (IEC 60076, IEEE C57.12.01), each unit is factory tested for full-load temperature rise, dielectric strength, and short-circuit withstand capability.
Technical Excellence & Reliability
The SCB10 11kV Series is designed for safe and efficient power conversion. Its flame-retardant design and moisture-proof construction make it ideal for high-density environments.
Key Technical Parameters:
Voltage Class: High Voltage 6kV / 10kV / 10.5kV / 11kV / 13.2kV to Low Voltage 0.4kV / 0.415kV / 0.433kV.
Vector Group: Dyn11 or Yyn0.
Impedance Voltage: 4%, 6%, or 8% (Standard compliant).
Insulation Level: F/F Class (Engineered for high thermal stability).
Core Performance: Optimized silicon steel sheets for significantly reduced no-load losses.
Procurement Guide: For data center applications, we recommend the 1250kVA – 2500kVA models for optimal load balancing and energy efficiency (PUE reduction).
✅ F/F insulation ensures continuous operation at up to 155°C hot-spot temperature, providing an extra margin for overload conditions.
🧠 Core Performance – No-Load Loss Optimization
Core Material: High-permeability grain-oriented silicon steel sheets (MOH-core or amorphous option upon request)
Loss Reduction: Optimized stepped lap joints and laser-scribed core reduce no-load losses by 15–25% compared to conventional designs
Lower excitation current → reduced reactive power draw → improved power factor at light load conditions
🎯 Procurement Guide for Data Center Applications
To achieve optimal load balancing and lowest PUE (Power Usage Effectiveness) , the following kVA ratings are recommended based on typical IT load distribution:
| Rack Power Density (kW/rack) | Typical Total IT Load | Recommended Transformer Rating |
|---|---|---|
| 5–8 kW | 600–1000 kW | 1250 kVA (N or N+1 config) |
| 8–12 kW | 1000–1500 kW | 1600 kVA |
| 12–15 kW | 1500–2000 kW | 2000 kVA |
| 15–20 kW | 2000–2400 kW | 2500 kVA |
📌 Why 1250–2500 kVA range for data centers?
Matches typical UPS module sizing (1000–2000 kW)
Avoids oversized transformers → reduces no-load losses during low IT load hours
Enables efficient 2N or DR architecture with <5% total harmonic distortion (THD) when paired with active filters
Lower short-circuit current → less stress on downstream switchgear
✅ Using a 2000 kVA transformer at 65–75% average load can improve operational efficiency by 1.5–2.5% compared to a 3000 kVA unit at 50% load — directly lowering PUE by 0.03–0.05.
✅ Compliance & Testing
Each transformer is supplied with a factory acceptance test report (FAT) including:
Measurement of winding resistance
Voltage ratio & vector group verification
No-load loss & current measurement
Load loss & impedance voltage measurement (at 75°C)
Induced overvoltage withstand test (ACS)
Separate source AC withstand test (power frequency)
Partial discharge measurement (≤10 pC)
Optional third-party inspection: SGS, TÜV, Bureau Veritas, or Intertek (available upon request).
📦 Ordering & Customization Options
To expedite your procurement process, please specify the following when requesting a quote:
Rated power (kVA): 1250 / 1600 / 2000 / 2500 / custom
Primary voltage (kV): 6 / 10 / 10.5 / 11 / 13.2
Secondary voltage (kV): 0.4 / 0.415 / 0.433
Vector group: Dyn11 (preferred for data center) / Yyn0
Impedance voltage: 4% / 6% / 8%
Tapping range: ±2×2.5% or ±5% (HV side)
Accessories: Temperature controller (PT100 + digital display), forced air cooling fans, IP20 / IP23 enclosure, rollers, bottom drip tray
📞 Request a Quotation
Expert Note for Data Center Designers: > “Spatial efficiency is critical in server rooms. Our SCB10-11kV series offers a more compact footprint compared to 33kV units. If you require STEP files or CAD drawings (.dwg) for your facility layout, please contact our engineering team now.
