Product Overview
The three-phase amorphous alloy oil-immersed distribution transformer is a next-generation energy-saving and environmentally friendly product developed in response to national energy conservation initiatives. Its core is made of advanced amorphous alloy material – a "non-crystalline metal" with atoms arranged in a disordered pattern, produced by rapid quenching solidification technology. This unique structure enables much easier magnetization and demagnetization compared to conventional silicon steel cores.
The product features a fully sealed, maintenance-free corrugated tank structure. It offers ultra-low no-load losses, low noise, and high reliability, making it widely applicable in urban and rural power grid projects, residential communities, hospitals, schools, industrial and mining enterprises, and pole-mounted installations.

Key Features
1. Ultra-Low No-Load Loss & Superior Energy Efficiency
• No-load loss is reduced by 70-80% compared to traditional silicon steel transformers, delivering significant energy savings
• No-load current is approximately 50% lower than that of silicon steel core transformers
• For 15-type models, no-load loss is about 50% lower than S13-type silicon steel distribution transformers, making it especially suitable for rural power grids and low-load-rate locations
2. Low Noise Operation
• High-quality amorphous alloy strip material with optimal flux density selection
• Shockproof pads installed between the core assembly and tank bottom/hanging plates, with soundproof panels between the assembly and oil tank to reduce noise transmission
3. Strong Short-Circuit Withstand Capability
• Dynamic analysis method applied for mechanical force calculation under short-circuit conditions
• High-voltage winding conductor hardened through flattening process to increase wire hardness and mechanical strength
• Grid oil channels in windings improve short-circuit resistance
4. Low Temperature Rise & Extended Service Life
• Optimized oil flow distribution design reduces winding hot-spot and average temperature rise
• Small oil gap with multiple oil channels and slotted pressing plate structure ensure smooth oil flow
• Fully sealed tank structure prevents air from contacting the oil, slowing insulation aging and eliminating the need for oil changes or routine maintenance
5. High Reliability & Environmental Adaptability
• Hermetically sealed corrugated tank structure effectively prevents oil deterioration, substantially extending service life
• High overload capability, capable of continuous operation under 110% rated load
• Suitable for outdoor installation and harsh environmental conditions

Technical Specifications
Rated Power: 30 ~ 2500+ kVA
HV Voltage: 6kV, 6.3kV, 10kV, 10.5kV, 11kV (customizable)
LV Voltage: 0.4kV, 0.415kV, 0.433kV, 0.69kV
Vector Group: Dyn11, Yyn0 (customizable)
Tapping Range: ±2×2.5% or ±5% (customizable)
Short-Circuit Impedance: 4% ~ 5.5% (depending on capacity rating)
Frequency: 50Hz / 60Hz
Cooling Method: ONAN (Oil Natural Air Natural) / ONAF
Core Structure: Three-phase four-frame five-column structure, rectangular cross-section
Tank Structure: Fully sealed, maintenance-free corrugated tank
Model Series
S(B)H15-M-(30-2500)/10kV – Three-Phase Amorphous Alloy Transformer (Standard energy-saving series)
S(B)H21-M-(30-2500)/10kV – Three-Phase Amorphous Alloy Transformer (Enhanced efficiency series)
S(B)H25-M-(30-2500)/10kV – Three-Phase Amorphous Alloy Transformer (Ultra-high efficiency series)

Applications
• Power Systems: urban and rural power distribution grids, substations
• Industrial Enterprises: mining, petrochemical, manufacturing facilities
• Public Facilities: residential communities, hospitals, schools, commercial districts
• Infrastructure: pole-mounted transformers, outdoor distribution rooms
• Renewable Energy: wind power, photovoltaic systems (low-load-rate applications)
Compliance Standards
• IEC 60076 Series
• GB 1094 – Power Transformers
• GB/T 6451 – Technical Parameters and Requirements for Three-Phase Oil-Immersed Power Transformers
• GB 20052-2020 – Energy Efficiency Limits and Energy Efficiency Grades for Power Transformers
• JB/T 10318 – Technical Parameters and Requirements for Hermetically Sealed Oil-Immersed Amorphous Alloy Distribution Transformers

Why Choose Us
• Superior Energy Savings: no-load loss 70-80% lower than traditional transformers, ensuring rapid return on investment
• Professional Manufacturing: years of R&D and production experience in the amorphous alloy transformer industry
• Quality Assurance: full-process quality control with rigorous tank pressure, leakage, and fluorescent testing
• Customization Services: flexible customization of voltage, capacity, vector group, and other parameters
• Comprehensive After-Sales: technical support, installation guidance, and long-term maintenance services