Low-Noise, Energy-Efficient Dry-Type Transformer Solutions for Premium Commercial Buildings

07/04/2025

Ⅰ. Core Pain Points
Urban CBD supertall buildings face two critical challenges:
• ​Noise Control Difficulty:​ Traditional transformers' no-load noise (>55dB) disrupts premium office environments, violating green building acoustic standards.
• ​Premium Space Constraints:​ Electrical room costs exceed ¥100,000 per square meter; large traditional transformers encroach on core functional areas.

Application Scenarios:​ 500m+ supertall landmarks, LEED Gold-certified office towers, international financial centers.

II. Customized Solution Design

1. Acoustic Optimization System (Noise ≤45dB(A))

​Technical Module

​Innovative Design

​Performance Gain

Magnetic Noise Reduction

Stepped-lap core joints + 27QG110 high-permeability silicon steel

≤45dB(A) no-load noise ▼ 18% below national standard

Vibration Control

Resilient shock pads + Nano-fiber sound-absorbing panels

8dB structural noise transmission reduction

​▶ Achieved Outcome:​​ Operating sound pressure level lower than a library environment (50dB), compliant with ISO 3744 indoor acoustic certification.

2. Space Compression Technology (+20% Power Density)

  • Coil Foil Winding Process:​ 0.05mm ultra-thin copper foil lamination technology
    → 15% eddy current loss reduction
  • 3D Cooling Channels:​ Vertical air ducts + honeycomb radiators
    → 30% thermal efficiency improvement

Footprint Comparison (2500kVA):

  • Traditional Transformer:​ ≥ 3.8m²
  • This Solution:​ 3.0m² ▼ 21% space saving

3. Fire Safety Assurance (Zero Hazardous Emissions)

  • Insulation System:​ UL-certified CERADUR® eco-friendly resin
  • Fire Resistance:​ Passes 950℃ open flame test
  • Safety Certs:​ IEC 60726 / IEC 60076-11
    ■ ​Key Breakthrough:​ Zero halogen gas emission during combustion (HCl < 0.1%), preventing secondary toxic hazards in fires.

III. Quantified Customer Value

​Dimension

​Benefit Metrics

​Application Value

Economic Value

30% reduction in electrical room footprint

Saves ≈100m² per 10,000m² building → ¥3M/year added leasable area

Certification Value

+15 points towards LEED credits

40% increase in Gold certification success rate

Operational Cost

12% lower load loss (IEC 60076)

≈50,000 kWh annual power savings per 2500kVA unit

IV. Target Application Scenarios

  1. New Supertall Landmarks:​ Complies with GB 50045 supertall building fire codes.
  2. Premium Commercial Retrofit:​ Enables capacity upgrade without expanding electrical rooms.
  3. Data Center Backup Power:​ Certified compliant with IEEE 519 harmonic current limits.

Success Case:​ A 380m Shanghai financial center implementing this solution achieved LEED Gold certification, with BMS-measured noise levels at 43.7dB(A).

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