630kva 33kv 400v Cast Resin Dry Type Transformer

The rated capacity of the transformer is 630kva, and the transformation ratio is 33/0.4kv. Wenzhou XiFa electric Power Equipment Co., Ltd adopt strict quality control over all the core raw materials used in the production of the 630kva 33kv 400v cast resin dry type transformer, including high magnetic permeability silicon steel sheets, purity copper windings, heat resistant insulation components,and epoxy resin casting materials.

Protection Enclosure

Transformer Core

Finished Product

In Wenzhou XiFa, All key materials must undergo comprehensive quality inspections and performance tests to ensure full compliance with IEC 60076 and GB/T 1094 standards. Key accessories such as temperature controllers, cooling fans, and protection devices also need to undergo strict performance check. This eliminates potential quality risks at the source and ensures that the 630kva 33kv 400v cast resin dry type transformer has excellent insulation performance and can operate stably for a long time.

Technical parameter:

Winding Workshop:

Wenzhou XiFa Electric Power Equipment Co., Ltd has the production workers who have more than 20 years experience in producing oil immersed transformer coil and cast resin transformer coil. The employees is experienced in producing 30 kva to 4000 kVA 33/0.4 transformer. Meanwhile, the intelligence foil winding machine also plays an important role in producing process of making 400 kva to 4000 kva dry type transformers. In the factory, employees could produce more than 300 sets of 100 kva winding within 30 days.

Foil Winding Machine

Winding Workshop

Transformer in Winding

Maintenance and Testing:

For the 630kva 33kv 400v cast resin dry type transformer, the insulation health can be comprehensively evaluated based on the temperature rise trend, local discharge, and insulation condition: The temperature rise under rated conditions should be stable without any abnormalities. If the temperature rise continues to increase, the temperature variation under load is abnormal or local hot spots occur, it indicates poor heat dissipation and insulation problems.

Testing Center

Test Waiting Area

Transformer in Testing

 During normal operation of the 630kva 33kv 400v cast resin dry type transformer, the amplitude of local discharge should be stable. If the local discharge gradually increases, there is pulse discharge and it intensifies with the increase of load temperature, it means that the insulation has defects such as air gaps and micro cracks. By observing the appearance of the resin and combining with insulation resistance and dielectric loss tests, the degree of insulation aging can be distinguished. During the assessment, the three indicators should be analyzed in combination. According to the abnormal situation, measures such as strengthening monitoring, reducing load for maintenance, or immediate shutdown should be taken.