3 Phase 1250kva 10 0.4kv Dry Type Transformers

The 1250kVA rating allows this transformer to handle substantial loads while maintaining stable output. At 433V secondary, the full load current is approximately:
I = 1250kVA / (√3 × 400V) ≈ 1804 Amps
This makes the 3 phase 1250kva 10 0.4kv dry type transformers suitable for:
Large manufacturing plants
Data centers with high redundancy requirements
Shopping malls and commercial complexes
Hospitals and critical infrastructure
Renewable energy storage systems

To reduce the load losses of 3 phase 1250kva 10 0.4kv dry type transformers, the following methods can be adopted:

Select high quality materials and design: Choose low loss core materials such as silicon steel sheets to reduce magnetization and eddy current losses. Ensure the use of high quality insulating materials to minimize insulation losses.

Temperature control: Ensure adequate ventilation around the 3 phase 1250kva 10 0.4kv dry type transformers and maintain proper airflow to keep the operating temperature low. Use appropriate cooling devices, such as radiators or fans, to improve heat dissipation efficiency.

Reduce load current: Avoid operating the transformer above its rated load during design and operation. Plan the power system reasonably and balance current loads to prevent overload.

Regular maintenance: Regularly inspect and clean the transformer to ensure normal operation and heat dissipation efficiency. Check and maintain the integrity of insulating materials to ensure insulation performance.

Optimize transformer design: Select an appropriate transformer capacity to avoid overdesign, thereby reducing load losses. Optimize winding design to reduce resistive losses.

In summary, through reasonable design, material selection, temperature control, load current reduction, and regular maintenance, the load losses of 3 phase 1250kva 10 0.4kv dry type transformers can be effectively reduced.

Product Parameters:

Name	3 phase 1250kva 10 0.4kv dry type transformers
Rated Capacity	1250kva
Primary voltage	10KV
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)	6%
Insulation Class	CLASS F or H
Cooling method	ONAF ONAF
Partial discharge	Less than 10pc

 

Accessories & Optional Features

Temperature controller with PT100 sensors and alarm/trip relays

IP21 / IP23 protective enclosure for outdoor or dusty areas

Rollers for easier installation

Fan cooling system (AF) to increase capacity by up to 30%

Copper or aluminum windings (copper recommended for high efficiency)

 

Conclusion

In modern power distribution systems, selecting the right transformer is critical for safety, efficiency, and long term reliability. The 3 phase 1250kva 10 0.4kv dry type transformers represents a perfect balance of high voltage handling, low voltage output, and energy saving performance. Designed for indoor and outdoor applications where fire safety is paramount, this cast resin transformer eliminates the risks associated with oil filled units.

Producing Equipment

Semi Finished Product

Test Center

Winding Workshop