1. The core is made of high quality cold rolled silicon steel sheet carefully fold.
2. The winding by high strength wire, double glass silk covered wire or composite insulation wire winding and become, insulation class is B, F or class H.3. The transformer enclosure made of high qualified steel plate, the structure on both fully considering the air circulation, and can effectively prevent droplets and prevent rats into the internal.
4. The patch panel and switch terminal inside the transformer enclosure, can be easily through the introduction of cable box on the left or the right of the stuffing box received a patch panel.