SH15-1250KVA amorphous alloy transformer

　　SH15-1250KVA amorphous alloy transformer is a benchmark product for high efficiency and energy conservation in the current power distribution field, and its technical characteristics and application value will be more prominent in the market environment in 2025. The following is a deep analysis based on the latest industry trends and technological advancements:

　　1、 Technological innovation and core parameters

　　(1) Breakthrough in Materials and Structures

　　1. Amorphous alloy iron core technology

　　Using iron-based amorphous alloy strip (with a thickness of only 0.027mm), its magnetization power is only 1/5 of that of silicon steel sheet, reducing the no-load loss to 530W (50% lower than S13 type). The electrical resistivity of this material is 3-6 times that of silicon steel, effectively suppressing eddy current losses. At the same time, it has higher hardness and a 30% increase in mechanical stress resistance.

　　2. Fully sealed oil immersed design

　　By using vacuum oil injection technology and corrugated oil tank structure, maintenance free operation is achieved. The oil is completely isolated from air to avoid oxidation and moisture risks, suitable for environments with humidity up to 80% (such as summer in Guan County, Liaocheng, Shandong). The fuel tank is made of high-quality cold-rolled steel plate, which can withstand salt spray corrosion for more than 1000 hours after anti-corrosion treatment.

　　(2) Key performance parameters (oil immersed)

　　|Parameter | Numerical | Analysis of Technical Advantages|

　　|---------------|--------------------|-----------------------------|

　　| No load loss | 530W | Annual power savings of approximately 4600 kWh (running for 8760 hours)|

　　| Load loss | 12000W (75 ℃) | Using copper foil winding, conductivity efficiency increased by 15%|

　　| Short circuit impedance | 4.5% | Anti short circuit capability up to 1.5 times rated current surge|

　　| Noise level | ≤ 45dB | Non crystalline alloy magnetostrictive effect reduces noise by 10dB|

　　| Energy Efficiency Level | Level 1 (GB 20052-2020) | Still the highest standard under the new national standard in 2025|

　　2、 Market Trends and Policy Drivers

　　(1) Policy mandatory upgrade

　　-Starting from 2025, China will fully implement the Level 2 energy efficiency access standard for transformers, and SH15, as a Level 1 energy efficiency product, will become the preferred choice for power grid procurement. In the bidding for the East China region of State Grid Corporation of China in 2025, the proportion of amorphous alloy transformers reached 42.9%, an increase of 15 percentage points from 2023.

　　-The 110kV amorphous alloy transformer developed by Guangdong Power Grid in collaboration with Haihong Electric and other units has been put into operation, marking the extension of this technology to the high-voltage field and further consolidating its market position.

　　(2) Economic advantage

　　- Initial cost : Approximately 110000-140000 yuan (all copper winding), 25% higher than the S13 type, but through annual electricity savings (calculated based on a load rate of 30%), the premium can be recovered within 3 years .

　　-Long term benefits: Taking an industrial park in Shandong as an example, using SH15-1250KVA instead of S11 can reduce carbon emissions by 7.2 tons per year, which is in line with local carbon trading subsidy policies (about 2000 yuan/ton).

　　3、 Key points of intelligent operation and installation

　　(1) Digital upgrade

　　-IoT Monitoring Module: Optional RS485 interface and temperature sensor for real-time monitoring of oil temperature, winding temperature, and local discharge. Data can be connected to the power IoT platform for fault warning and predictive maintenance.

　　-Remote control function: It is linked with SCADA system through Modbus protocol, supports remote voltage regulation of tap changer, and adapts to voltage fluctuations during new energy grid connection (such as photovoltaic access scenarios).

　　(2) Installation environment adaptation

　　-Climate response in Guan County, Shandong Province:

　　-Summer high temperature (up to 40 ℃): It is necessary to reserve heat dissipation channels, and the distance between the fuel tank and the wall should be ≥ 1.5 meters to avoid direct sunlight.

　　-Winter low temperature (-15 ℃): -10 transformer oil is used to ensure cold start performance.

　　-Humidity management: Install a dehumidifier to control the environmental humidity between 40% -70% to prevent condensation.

　　- Basic specifications :

　　-The load-bearing capacity of the concrete foundation is ≥ 15 tons (the total weight of the transformer is about 8 tons), and the surface flatness error is ≤ 2mm.

　　-The grounding system adopts 40 × 4mm galvanized flat steel, with a grounding resistance of ≤ 4 Ω, in compliance with GB 50169 standard.

　　4、 Deep analysis of application scenarios

　　(1) Typical case

　　1. Rural power grid renovation

　　In the rural power grid renovation of a county in Henan Province, the SH15-1250KVA transformer reduced the line loss rate from 8.2% to 4.5%, saving 120000 yuan in annual electricity bills. Its low no-load loss characteristics are particularly suitable for night light load (load rate<10%) scenarios.

　　2. Commercial Complex

　　A shopping mall in Shanghai adopts SH15-1250KVA+photovoltaic energy storage system, which reduces the annual comprehensive electricity cost by 18% under the peak valley electricity price difference. The low noise characteristics of transformers (≤ 45dB) meet the requirements of shopping malls for environmental comfort.

　　3. New energy supporting facilities

　　A wind farm in Inner Mongolia is equipped with SH15-1250KVA transformers, combined with SVG dynamic reactive power compensation, to increase the power factor from 0.82 to 0.98 and reduce the wind abandonment rate by 3.5%.

　　(2) Comparison with competitors

　　|Model | No load loss | Load loss | Applicable scenarios | Market share by 2025|

　　|--------|----------|----------|-------------------------|----------------|

　　|SH15 | 530W | 12000W | Light load, long-term operation | 38%|

　　|S22 | 800W | 10500W | High load, large load fluctuation | 25%|

　　|SCBH15 (dry type) | 1300W | 12500W | Places with high fire protection requirements | 12%|

　　5、 Selection and procurement suggestions

　　1. Load characteristic analysis

　　If the annual average load rate is less than 30%, SH15 is preferred; If the load rate is greater than 50%, S22 type (with lower load loss) can be considered. It is recommended to use energy consumption simulation software (such as ETAP) for full lifecycle cost estimation.

　　2. Manufacturer Qualification Review

　　Request to provide GB/T 25446 certification, short-circuit resistance test report (certified by CNAS laboratory), and investigate at least 3 similar project cases (such as rural power grid renovation and new energy projects).

　　3. Optimization of Contract Terms

　　Agree on a "compensation clause for excessive no-load losses" (0.5% of the contract amount shall be compensated for every 1% excess), and require the manufacturer to provide a 10-year warranty (including amorphous alloy iron cores).

　　6、 Industry Frontier Trends

　　1. Material Innovation

　　The nano crystalline amorphous composite iron core developed by Antai Technology has reduced no-load loss by another 15% and is expected to be mass-produced by 2026.

　　2. Intelligent integration

　　The "SH15+edge computing Module" launched by Haihong Electric can analyze the harmonic content in real time and automatically adjust the tap changer. It has been applied in Guangdong power grid as a pilot, and the harmonic distortion rate has been reduced by 22%.

　　Summary: H15-1250KVA amorphous alloy transformers will occupy a core position in the distribution market by 2025 due to their technological maturity, policy adaptability, and economic viability. Users need to choose the optimal configuration plan based on specific load characteristics, installation environment, and long-term operation and maintenance needs, and pay attention to the latest developments in materials and intelligent technology to achieve maximum energy efficiency and investment return.