High Efficiency 10kV Mineral Oil Transformer

Reliable Structural Design

• Spiral windings with longitudinal oil channels for enhanced internal heat dissipation.
• Reinforced support at winding ends for increased short-circuit resistance.
• New lifting and positioning structures ensure safe long-distance transport and stable operation.
• Multiple proprietary structural designs deliver higher reliability and performance.
• Advanced engineering ensures superior technological performance across all models.

Premium Material Selection

• Oxygen-free copper wire with low resistivity and smooth, burr-free surface treatment reduces load loss and improves electrical reliability.
• High-quality silicon steel sheets with low unit loss minimize no-load loss.
• Laminated wood insulation components remain intact even under short-circuit conditions.
• Deep-filtered transformer oil with minimal water, gas, and impurity content.
• Durable rubber seals effectively prevent aging and oil leakage.
• All materials undergo strict quality inspection and supplier audits in compliance with ISO9001 standards.

Enhanced Technical & Economic Performance

• Compared to the S9 series, the S11 series offers:
  • 30% reduction in average no-load loss
  • 70–85% lower no-load current
  • 10K lower average temperature rise
  • Over double the service life
  • Capable of continuous 20% overload operation
  • 2–4 dB lower operating noise

Fully Sealed Construction

• The “M” in model S11(M)R denotes a fully sealed tank design.
• Replaces conventional oil pipes with corrugated fins for heat dissipation, eliminating the need for an external oil conservator.
• Welded corrugated fins, made from high-quality cold-rolled steel, allow oil volume expansion while isolating the interior from the atmosphere.
• This design slows oil aging and prevents moisture absorption, ensuring maintenance-free operation.
• The tank undergoes degreasing, derusting, phosphating, and triple-protection coating, making it suitable for harsh environments such as metallurgical, petrochemical, and mining applications.

Product Standards

Compliant with:
GB 1094.1-1996, GB 1094.2-1996, JB/T10088-2004,
GB 1094.3-2003, GB 1094.5-2003, GB/T 10237-1988,
GB/T 6451-2008, GB/T 7595-1987, JB/T 3837-2010

Operating Conditions

• Standard Conditions
  • Altitude ≤ 1000 m
  • Ambient Temperature:
    • Maximum: +40°C
    • Hottest Month Average: +30°C
    • Annual Average: +20°C
    • Minimum Outdoor: –25°C
• Special Conditions
  • Altitude > 1000 m
  • Ambient Temperature:
    • Maximum: +40°C
    • Minimum: –25°C
  • Custom requirements available upon consultation at time of order.