Product Overview
The single-phase oil-immersed distribution transformer is a compact and efficient power conversion device specifically designed for single-phase power supply systems. It is widely used in residential areas, rural electrification projects, railway traction systems, lighting networks, and remote off-grid locations where three-phase power is unavailable or unnecessary.
Built with a fully sealed, maintenance-free corrugated tank structure, this transformer offers reliable performance, low losses, and excellent overload capacity. It is particularly suitable for pole-mounted installations and outdoor distribution applications where space is limited and reliability is critical.

Key Features
1. Compact Design & Space Saving
• Small footprint and lightweight construction ideal for pole-mounted and confined-space installations
• Optimized structural design reduces overall dimensions while maintaining full performance
• Easy to transport, handle, and install in remote or difficult-to-access locations
2. Low Loss & High Energy Efficiency
• Core made of high-quality cold-rolled grain-oriented silicon steel, minimizing no-load losses
• Optimized winding design reduces stray and eddy current losses
• Available in multiple energy efficiency grades to meet diverse project requirements
3. Reliable Short-Circuit Withstand Capability
• Robust mechanical design withstands short-circuit forces effectively
• High-quality copper windings with precision manufacturing ensure long-term stability
• All fasteners treated with anti-loosening measures for secure operation
4. Fully Sealed & Maintenance-Free
• Corrugated tank fully sealed structure completely isolates transformer oil from air and moisture
• Prevents oil degradation and slows insulation aging, substantially extending service life
• No routine maintenance, oil changes, or core lifting inspections required
5. Excellent Environmental Adaptability
• Suitable for extreme temperatures: -35°C to +45°C ambient
• Designed for outdoor installation with high humidity, salt spray, and dusty conditions
• Optional high-altitude models available for operation above 1000m

Technical Specifications
Rated Power: 5kVA ~ 250kVA (customizable)
HV Voltage: 6kV, 6.3kV, 10kV, 10.5kV, 11kV (customizable)
LV Voltage: 0.22kV, 0.23kV, 0.24kV, 0.415kV (customizable)
Vector Group: Ii0 (single-phase) (customizable)
Tapping Range: ±5% or ±2×2.5% (customizable)
Short-Circuit Impedance: 3% ~ 4.5% (depending on capacity rating)
Frequency: 50Hz / 60Hz
Cooling Method: ONAN (Oil Natural Air Natural)
Tank Structure: Fully sealed, maintenance-free corrugated tank

Applications
• Residential Power Supply: single-family homes, rural villas, farmhouses
• Rural Electrification: off-grid and remote area power distribution
• Railway Systems: railway traction power supply, signaling systems
• Street Lighting: urban and highway lighting networks
• Industrial & Commercial: small workshops, commercial buildings, temporary construction sites
• Renewable Energy: small-scale solar and wind power systems

Compliance Standards
• IEC 60076 Series
• GB 1094 – Power Transformers
• GB/T 6451 – Technical Parameters and Requirements for Three-Phase Oil-Immersed Power Transformers (applicable sections)
• GB 20052-2020 – Energy Efficiency Limits and Energy Efficiency Grades for Power Transformers

Why Choose Us
• Reliable Quality: rigorous quality control with full testing before delivery
• Customization Services: flexible customization of capacity, voltage, vector group, and other parameters
• Professional Manufacturing: years of experience in single-phase transformer production
• Competitive Pricing: cost-effective solutions without compromising quality
• Comprehensive After-Sales: technical support, installation guidance, and long-term maintenance services