1250kVA-22/0.42kV Dry Type Transformer
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product description
1250kVA-22/0.42kV dry-type transformer is a transformer that uses dry insulation materials for insulation and cooling, and does not require the use of liquid coolants such as oil. The rated capacity of dry-type transformers is 1250 kVA, which is suitable for power transmission and transformation, industrial power and other places that require voltage conversion in power systems. Common faults of dry-type transformers include short circuit, overload and overtemperature, which can be handled by timely cutting off the power supply, reducing the load and checking the cooling system.
1250kVA-22/0.42kV dry-type transformer structure
Oil pillow: Dry-type transformers can accommodate and cool the iron core, and are filled with moisture absorbents that can dry automatically.
Oil tank: Dry-type transformers store insulating materials.
Iron shell: The iron shell of a dry-type transformer is a closed metal box made of stacked silicon steel sheets to prevent the internal coil from being affected by external short circuits.
Winding: In dry-type transformers, multiple wires and insulating parts are wound in a spiral shape to facilitate heat dissipation, enhance the magnetic field, and reduce noise.
Low-voltage bushing: Used to support the high-voltage bushing to isolate it from the ground
| Rated capacity | 1250kVA |
| Rated voltage | 22/0.42kV |
| Frequency | 50Hz |
| Voltage regulation method | without excitation voltage regulation |
| Voltage regulation range | 22kV ± 2 * 2.5% |
| Cooling method: | self cooling |
| Insulation material | epoxy resin casting |
| The coil material | all copper |
| Implement standards | GB1094.11-2007, GB/T10228-2008, etc |
1250kVA-22/0.42kV dry-type transformer Performance characteristics
Small size and light weight: usually only 1/3 of the oil-immersed transformer of the same capacity. Convenient for transportation
High efficiency: low no-load loss and low temperature rise, which improves the reliability of the equipment and extends the service life of the transformer.
Strong anti-pollution ability: fully sealed structure, moisture-resistant, can be used in harsh environments
Safe, fireproof and pollution-free: can be directly operated at the load center, the transformer is equipped with an intelligent signal temperature control system, which can automatically detect and display the temperature, and has alarm and tripping functions. Development towards intelligent transformers
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