SSZ110-40000/110-38.5-11KV transformer

Product description

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What are the characteristics of the SSZ110-40000/110-38.5-11KV transformer? The SSZ110-40000/110-38.5-11KV transformer has the following characteristics:

### In terms of electrical performance

- **Low losses**: High-quality core materials and advanced design techniques are adopted, which makes both no-load losses and load losses at a relatively low level. It improves the operating efficiency of the transformer, reduces operating costs, and has good energy-saving effects.

- **Reasonable impedance voltage**: The impedance voltages among different windings, such as high-voltage to medium-voltage, high-voltage to low-voltage, and medium-voltage to low-voltage, are reasonably designed. It can effectively limit the short-circuit current, improve the stability and security of the power system, and is also conducive to realizing the power matching and transmission among different voltage levels.

- **Strong voltage regulation ability**: It is usually equipped with an on-load voltage regulation device, which can adjust the output voltage within a certain range to adapt to the fluctuations of the grid voltage, ensure the stability of the power supply voltage, and meet the requirements of different loads for voltage quality.

### In terms of structural design

- **Three-phase three-winding structure**: The three-phase three-winding structure is adopted, which can simultaneously realize the power conversion and distribution among different voltage levels such as 110kV, 38.5kV, and 11kV. It can be used as a key equipment in hub substations or regional substations in the power system, improving the power supply flexibility and reliability of the power system.

- **Reliable core**: The core is generally made of high-quality silicon steel sheets stacked together, which has high magnetic permeability and low losses. Moreover, reasonable core structures and fastening methods, such as the stepped-lap joint structure, are adopted to effectively reduce the vibration and noise of the core and improve the operating stability of the transformer.

- **Good winding insulation performance**: The windings are made of materials with good insulation performance and advanced insulation techniques. They have high insulation strength and heat resistance, can withstand the effects of voltage and current during long-term operation, effectively prevent the occurrence of faults such as winding short circuits, and improve the reliability and service life of the transformer.

### In terms of operation and maintenance

- **High reliability**: The overall design and manufacturing processes are mature, and the stability and reliability of the equipment are relatively high. It can maintain a relatively low failure rate during long-term operation, reduce the time for outage maintenance, and improve the power supply reliability of the power system.

- **Convenient maintenance**: The structural design is relatively reasonable, and the installation and disassembly of various components are relatively convenient, facilitating the daily maintenance and inspection work of the operating personnel, such as checking the oil temperature, oil level, winding insulation, etc., so as to timely discover and handle potential fault hazards.

- **Strong adaptability to the environment**: It has a relatively strong adaptability to the environment and can operate normally under certain environmental conditions such as temperature, humidity, and altitude. For example, in outdoor substations, it can resist harsh natural environments such as wind and sand, rain and snow, and sunlight, ensuring the stable power supply of the power system. The detailed technical parameters of the SSZ110-40000/110-38.5-11KV are usually as follows:

### Voltage combination and tap range

- **High voltage**: 110kV, and the tap range is usually ±8×1.25%.

- **Medium voltage**: 38.5kV, and the tap range is generally ±2×2.5%.

- **Low voltage**: 11kV.

### Connection group YN,yn0,d11.

### Losses

- **No-load loss**: Approximately 33.5kW.

- **Load loss**: Approximately 178.5kW.

### No-load current Approximately 0.2%.

### Impedance voltage - High-voltage to medium-voltage: Generally around 10.5%.

- High-voltage to low-voltage: Usually around 17.5%.

- Medium-voltage to low-voltage: Approximately 6.5%.