Hermetically Sealed 250KVA 315KVA Three-Phase Oil Immersed Step-Down Distribution Transformer with Low-Loss Core

The Type S13 oil-immersed distribution transformer is widely used in residential areas, commercial centers, industrial parks, and rural electrification projects. Compared to S9 or S11, the S13 offers several improvements:

• Higher Energy Efficiency: Lower no-load loss (20-30% reduction compared to S11) and lower load loss through improved winding structure and materials.
• Improved Temperature Rise Performance: Enhanced oil circulation and cooling systems maintain stable operation under load, extending insulation life.
• Reduced Noise Levels: High-permeability silicon steel and precision manufacturing lower magnetostriction for quieter operation.
• Robust Mechanical Design: Optimized winding structure improves short-circuit resistance and reduces vibration.
• Longer Service Life: Superior materials and structural improvements enable 20-30 years of service under proper conditions.

• 30+ senior engineers providing 24/7 technical support with 30-minute response time
• 100,000 m² factory with 250 skilled workers and 30+ engineers
• 4 production lines with 10,000+ units annual capacity
• 100% quality control testing with 25 detection points
• 15 years of transformer design and production experience
• Compliance with GB 20052-2024/ANSI/IEEE/DOE2016/CSA/IEC60076 standards
• Global on-site technical support

HENTG Power is an ISO9001 certified transformer manufacturer specializing in reliable, high-performance solutions for global power systems since 2011.

With a 100,000 m² factory, over 250 skilled workers, 30+ senior engineers, and 10+ professional testing engineers, we deliver high-quality transformer solutions with strong production capacity of 20,000 units/year.

Our products comply with GB 20052-2024 and IEC 60076 standards, serving global markets across various applications including dry transformers, oil immersed transformers, substations, switchgear, and distribution boxes.