China Three Phase 5MVA Power Transformer Manufacturers
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Product Introduction
The three-phase 5MVA power transformer is an important device in the power system, mainly used to convert high-voltage power signals into low-voltage signals suitable for users.

| Parameter name | Standard value |
| Rated capacity | 5MVA |
| Rated voltage | High voltage winding: 115kV, low voltage winding: 10.5kV |
| Rated frequency | 50Hz |
| Number of phases | 3-phase |
| Voltage regulation mode | On-load voltage regulation |
| Voltage regulation position | High voltage neutral point |
| Voltage regulation range | ±8×1.25% |
| Neutral point grounding method | Direct grounding or indirect grounding |
| Short-circuit impedance | High voltage-low voltage: 10.5% ±5% |
| Cooling method | ONAN |
| Connection group code | YNd11 |
Basic parameters and performance
The three-phase 5MVA power transformer has a rated capacity of 5MVA and is suitable for various distribution system applications, including power distribution in large commercial and industrial settings. Its input voltage range is wide, and it can accept input voltages from 3kv to 220kv, and the output voltage can be customized according to needs, including 110v, 220v, 380v, 440v, 480v and 400v. In addition, the transformer complies with IEC, ANSI and IEEE international standards to ensure reliable performance and safety during operation.

Structural features
The three-phase 5MVA power transformer is mainly composed of iron core, winding, oil tank and cooling system. The core is the magnetic circuit part, responsible for conducting the magnetic field; the winding is responsible for connecting the circuit, usually carefully wound with double-wire or enameled round wire; the oil tank is used to contain transformer oil and other components, and plays a role in heat dissipation and insulation; the cooling system is responsible for timely dissipating the heat generated during the operation of the transformer to ensure the stable operation of the transformer. Application scenarios and maintenance The three-phase 5MVA power transformer is suitable for various high-voltage to low-voltage power conversion needs, especially in large commercial and industrial settings. In order to ensure its safe and reliable operation, regular inspection and maintenance are necessary. Specific measures include: Regularly check the insulation status of the windings and cores to ensure that there is no aging or damage. Clean the oil tank and cooling system to prevent dust and impurities from accumulating and affecting the heat dissipation effect. Monitor the temperature rise of the transformer to ensure that it does not exceed the design allowable range. Perform preventive maintenance regularly, including cleaning the oil tank, replacing aging parts, etc.

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