SSZ110-25000/220-38.5-6.6KV transformer

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The information on the technical parameters, characteristics and price of the SSZ110-25000/220-38.5-6.6KV transformer is as follows:

### Technical Parameters

- **Voltage Combination and Tap Range**: The high voltage is 220kV, and the tap range is usually ±8×1.25%. The medium voltage is 38.5kV, and the tap range is generally ±2×2.5%. The low voltage is 6.6kV.

- **Connection Group**: YN,yn0,d11.

- **Losses**: The no-load loss is approximately 30kW, and the load loss is approximately 160kW.

- **No-load Current**: It is approximately 0.2%.

- **Impedance Voltage**: The impedance voltage between high and medium voltage is generally around 10%. That between high and low voltage is usually around 17%. And that between medium and low voltage is approximately 6%.

- **Weight**: The transportation weight is approximately 60t, and the total weight is approximately 70t.

- **Dimensions**: The length × width × height is approximately 6300mm × 4300mm × 4900mm.

### Characteristics

- **Excellent Electrical Performance** - **Low Losses**: High-quality silicon steel sheets with high magnetic permeability and advanced core manufacturing processes, as well as optimized winding designs, are adopted to effectively reduce no-load losses and load losses, improve the operating efficiency of the transformer, and reduce operating costs.

- **Strong Voltage Adjustment Ability**: Equipped with an on-load voltage regulation device, it can finely adjust the output voltage within a relatively large range, effectively respond to fluctuations in grid voltage, ensure the stability of the power supply voltage, and meet the strict requirements of different loads for voltage quality.

- **Reasonable Short-Circuit Impedance**: The short-circuit impedance among each winding is carefully designed. When a short-circuit fault occurs in the system, it can effectively limit the magnitude of the short-circuit current, protect the transformer and other electrical equipment from the impact of the short-circuit current, and improve the stability and security of the power system.

- **Reasonable Structural Design** - **Three-Winding Structure**: The three-phase three-winding structure design can simultaneously realize the power conversion and distribution among different voltage levels such as 220kV, 38.5kV, and 6.6kV. As a key equipment in hub substations or regional substations in the power system, it enhances the flexibility and reliability of power supply.

- **Reliable Core**: The core adopts a stepped-lap joint structure and is made of high-quality silicon steel sheets stacked together. It has high magnetic permeability and low losses. Meanwhile, it reduces the vibration and noise of the core and improves 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.

- **Convenient Operation and Maintenance**

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

- **Convenient Maintenance**: The structural design is relatively reasonable, and the installation and disassembly of each component 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. In outdoor substations, it can resist harsh natural environments such as wind and sand, rain and snow, and sunlight to ensure the stable power supply of the power system.

### Price The price of this type of transformer is usually between 1.8 million and 3 million yuan. The specific price is affected by the following factors:

- **Brand Factors**: For international well-known brands such as Siemens and ABB, their products have relatively large investments in aspects such as technological research and development, quality control, and after-sales service, so the prices are relatively high, probably between 2.5 million and 3 million yuan. While for domestic well-known brands such as TBEA and XD Electric, the prices are relatively low, approximately between 1.8 million and 2.5 million yuan.

- **Raw Material Costs**: The main raw materials of transformers include silicon steel sheets, copper or aluminum wires, insulating materials, etc. In recent years, the prices of these raw materials have fluctuated greatly. If the prices of silicon steel sheets and copper materials rise, the manufacturing costs of transformers will also increase accordingly, thus affecting their market prices.

- **Technical Parameter Requirements**: Different users may have different requirements for the technical parameters of transformers. For example, if there are special requirements for indicators such as losses, short-circuit impedance, and voltage regulation range, manufacturers may need to carry out special designs and production, which will increase production costs and lead to price increases.

- **Market Supply and Demand Relationship**: When the market demand for power transformers is relatively large while the supply is relatively insufficient, the price will rise; conversely, the price may decline. The price of the SSZ110-25000/220-38.5-6.6KV transformer is usually between 2 million and 3 million yuan. The following are some factors affecting its price:

### Brand Factors - **International Well-known Brands**: Such as Siemens and ABB, etc. Their products have relatively large investments in technological research and development, quality control, after-sales service and other aspects, so the prices are relatively high, probably between 2.5 million and 3 million yuan.

- **Domestic Well-known Brands**: Such as TBEA and XD Electric, etc. The prices are relatively low, approximately between 2 million and 2.5 million yuan.

### Raw Material Costs The main raw materials of transformers include silicon steel sheets, copper or aluminum wires, insulating materials, etc. In recent years, the prices of these raw materials have fluctuated greatly. If the prices of silicon steel sheets and copper materials rise, the manufacturing costs of transformers will also increase accordingly, thus affecting their market prices.

### Technical Parameter Requirements Different users may have different requirements for the technical parameters of transformers. For example, if there are special requirements for indicators such as losses, short-circuit impedance, and voltage regulation range, manufacturers may need to carry out special designs and production, which will increase production costs and lead to price increases.

### Market Supply and Demand Relationship When the market demand for power transformers is relatively large while the supply is relatively insufficient, the price will rise; conversely, the price may decline.