2500kva 20kv Dyn11 Dry Type Power Transformers

The 2500kva 20kv dyn11 dry type power transformers are commonly used in locations with high performance requirements such as fire protection and explosion prevention, due to their advantages including strong short circuit withstand capability, low maintenance workload, high operational efficiency, compact size, and low noise levels.
Stable, fire resistant, and pollution reducing ,can be operated directly at load points. Advanced domestic technology,High mechanical strength, strong short circuit withstand capability, low partial discharge, good thermal stability, high reliability, and long service life.
Low losses, low noise, significant energy saving effect, and maintenance free operation. Good heat dissipation performance and strong overload capability.Capacity can be increased when forced air cooling is applied.
Excellent moisture resistance.Suitable for operation in high humidity and other harsh environments.
The 2500kva 20kv dyn11 dry type power transformers can be equipped with a comprehensive temperature detection and protection system. An intelligent signal temperature control system enables automatic detection and cyclic display of the operating temperature of each of the three phase windings, automatic start/stop of the fans, as well as alarm and trip functions.
Compact size, light weight, small footprint, and low installation cost.

Daily Operation, Inspection, and Maintenance Procedures for 2500kva 20kv dyn11 dry type power transformers

Pre Operation Inspection:

Check that the environment around the transformer is dry and free of debris that may obstruct air circulation.

Verify that the connecting bolts of the transformer are tightened and check the reliability of the grounding device.

Inspect the transformer enclosure for any damage or corrosion.

Check that instruments, indicator lights, and relays are functioning properly.

Fault Analysis and Handling During Operation:

Regularly monitor the transformer temperature to ensure it operates within the normal range.

 

Monitor the transformer current and voltage to detect any abnormalities.

Pay attention to temperature changes in the surrounding environment to avoid overheating issues.

Periodically check the insulation resistance of the transformer to ensure good insulation performance.

If any abnormal conditions (such as unusual noise, vibration, odor, etc.) are detected, immediately shut down the transformer for inspection.

 

Regular Maintenance:

Regularly clean the transformer enclosure to ensure good ventilation.

Remove dirt and debris from insulating materials.

Inspect and replace aging, damaged, or severely worn insulating materials.

Regularly check insulation resistance to determine whether the insulation status is normal.

 

Inspect cooling fans and radiators to ensure the heat dissipation system is operating properly.

Keep regular maintenance records and reports, documenting maintenance activities and identified issues.

Product Parameters:

Name	2500kva 20kv dyn11 dry type power transformers
Rated Capacity	2500kva
Primary voltage	20KV
Secondary voltage	0.4 0.415 kV
Insulation material	Cast resin
Vector Group	Dyn11 Yyn0
No load Loss (P0)	Based on customer’s requirement
Load Loss (Pk) @ 120°C	Based on customer’s requirement
Impedance Voltage (Uk)	8%
Insulation Class	CLASS F or H
Cooling method	ONAF ONAF
Partial discharge	Less than 10pc

Producing Equipment

Semi Finished Product

Test Center

Winding Workshop