Used transformer 2500 kva, 20/400 V

1. Product description

The 2500 kva transformer, with tensions of 20 kV and 400 V, is an essential device for the management of energy in large -scale industrial and commercial applications. This used transformer is designed to convert high medium voltage voltages (MT) into low voltages of low voltage (BT), making it suitable for a wide range of uses.

2. Technical Specifications

• Brand and model: (not specified in detail, therefore generalized for transformers with these characteristics)
• Year of construction: (year not specified, but a recent construction is presumed if in good condition)
• Power: 2500 kva
• Primary voltage (Mt): 20 kV
• Secondary voltage (BT): 400 V
• Type of isolation: (specific details on isolation not supplied, but it can usually be mineral oil or resin)

3. Components and structure

• Nucleus:

  • Material: made with silicon steel slats to reduce losses for hysteresis and parasitic currents.
  • Construction: Sandwich design with overlapping slats to improve efficiency and reduce noise.

• Bobins:

  • Material: copper or aluminum windings, covered with high resistance insulation.
  • Configuration: primary and secondary coils wrapped on separate nuclei to reduce losses and improve efficiency.

• Tank and isolation:

  • Type of isolation: it can be in mineral oil or resin. Mineral oil is common in older transformers and provides cooling and insulation. The resin is more modern and offers better protection against environmental contaminations.

• Cooling System:

  • Mineral oil: the cooling system uses oil to dissipate the heat generated during operation.
  • Resin: for recent models, cooling can take place through solidified resin, which offers excellent protection against humidity.

4. Dimensions and weight

• Dimensions: 2500 kva transformers are generally of significant size, typically 3 x 3 x 3.5 meters, but the exact size may vary.
• Weight: about 5,000 - 6,000 kg, depending on the construction and materials used.

5. Mechanical characteristics

• Efficiency: high operational efficiency with low losses thanks to the advanced construction and high quality materials.
• Reliability: robust and designed to operate in complex industrial and commercial environments.
• Protection: high quality isolation to ensure the safety and duration of the transformer.

6. Use procedure

1. Installation:

   • Positioning: install the transformer on a stable and protected base. Make sure there is enough space for ventilation and maintenance.
   • Connection: Connect the high voltage terminals (20 kV) and low voltage (400 V) following the manufacturer's specifications and make sure that all connections are correct.

2. Switching on and Monitoring:

   • Ignition: follow specific start procedures and monitor operating parameters as voltage and current.
   • Monitoring: check the temperature and operating conditions regularly to make sure that the transformer works correctly.

3. Maintenance:

   • Regular inspections: check the condition of the transformer and verify the integrity of the components.
   • Cleaning: keep the surrounding area clean and debris free to avoid operating problems.

7. Matching Accessories

• Monitoring devices: temperature sensors, measuring instruments to monitor performance, and alert systems for anomalous conditions.
• Additional cooling systems: if necessary, install fans or other cooling systems for environments with high loads.

8. Mathematical formulas for optimal use parameters

• Apparent power (S):

  $$S$$

  Where PP $P$ is the active power and QQ $Q$ is the reactive power.

• Transformer Efficiency:

  $$\text{Efficiency}$$

• Losses in the Transformer:

  $$\text{Total Losses}$$

9. Materials and applications

• Working materials: suitable for resistive and inductive loads in industrial and commercial environments.
• Applications: industrial plants, large commercial buildings, transformation and energy distribution stations.

10. Used good maintenance and verification

• Maintenance:

  • Periodic checks: carry out regular checks and insulation tests to ensure optimal operation.
  • Cleaning: Remove accumulations of dust and debris to keep the transformer in good condition.

• Verification of Good Used:

  • General conditions: inspect for signs of wear and physical damage. Check the quality of isolation and connections.
  • Operating test: make sure that the transformer operates according to the specifications and without anomalies.

11. Use sectors

• Industrial: for large production plants and industrial operations.
• Commercial: to feed shopping buildings and distribution centers.
• Energy and infrastructure: used in transformation stations for large -scale energy distribution.

12. Advantages of the purchase used

• Lower cost: greater savings than new transformers.
• Reliability: if maintained correctly, used transformers can offer excellent performance and a long duration.
• Immediate availability: faster availability than the purchase of new units.

Conclusion

The transformer used by 2500 kva, with tensions of 20/400 V, is a powerful and reliable solution for your energy needs. With a robust construction and high quality materials, it offers long duration and excellent performance. Buying a used transformer can represent an advantageous economic choice, with the guarantee of solid and reliable performance.

Including transport

are offered services on additional requests for a fee:

- Revision
- Tested
- 1 year warranty