How does the load test run of the transformer work?

When conducting a load test for transformers, the transformer can proceed to the load test phase only if there are no abnormalities during 24 hours of no-load operation. The specific operational steps are outlined below:

1.Gradual Load Increase: Initiate the operation with a 25% load, gradually increasing it to 50%, 75%, and finally reaching full-load testing. Throughout this process, it is essential to ensure that there is no leakage of oil from the seals and weld seams.

2.Cooling System Activation: As the transformer temperature rises during load testing, a certain number of cooling systems should be gradually activated.

3.Test Duration: The load test duration should commence from reaching full load and last for 2 hours.

4.Inspection under Normal Conditions: In the course of load testing, especially during full-load testing, the load test work can be concluded only when the transformer body, various components, and accessories are all confirmed to be in normal condition.

5.Considerations for New Transformers: For newly loaded transformers, inspection frequency should be increased, with simultaneous attention to oil temperature. If the temperature exceeds 45K, an immediate signal should be issued.

LuShan, est. 1975, is a Chinese professional manufacturer specializing in power transformers and reactors for 49 years. Leading products are single-phase transformer, three-phase transformers, DC inductors, AC reactors, filtering reactor, expoxy resin high-voltage transformer and intermediate, high-frequency products. Our transformers and reactors are widely used in 10 application areas: rapid transit, construction machinery, renewable energy, intelligent manufacturing, medical equipment, coal mine explosion prevention , excitation system, vacuum sintering, central air conditioning.

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