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Dry transformers H - class SGB10 without packaging use special dry transformer technology MORA in Germany, the products fully meet the requirements of fire safety, sealing and environmental protection.It is an ideal product for distribution systems that are widely used in various situations with special safety and fire protection requirements, such as subways, ships, mines, chemicals, power companies and densely populated buildings.
Operational characteristics of non-hermetic dry power transformers N-class SG(B) series
1. Good heat dissipation conditions, long thermal life and extremely high overload capacity.It can operate at full load for a long time without forced air cooling under 120% long-term overload and IP45 protection grade.
2. Extremely high safety and fire resistance, no smoke when burning for a long time at high temperature of 800°C.
3. Extremely high temperature resistance (can be fully loaded immediately at -50°C).
4. 100% waterproof, excellent hydrophobicity and moisture resistance.
5. Unique coil design and high field design virtually eliminate partial discharge.
6. Low losses and significant energy saving effect Compared with SC9 series dry-type transformers, no-load losses are reduced by an average of 10%, and load losses by 5%.
7. At the end of their service life, the insulation material and copper wire can be easily separated and recycled without causing any pollution to the environment.
Design features of non-hermetic dry power transformers N-class SG(B) series
1. Unique porcelain insulating structure using MORA insulating cylinder and high frequency ceramic pad will never deform.
2. High and low pressure coils are first made of NOMEX insulation material and repeatedly impregnated with specially designed H-grade insulation using VIP vacuum equipment.After repeated firing, they are sealed on the outside with high-strength insulation.material and cures at high temperature.The high voltage coil adopts a continuous structure with high mechanical strength and good heat dissipation conditions.
3. The iron core is made of imported high-quality silicon steel sheets with high magnetic permeability, and adopts a stepped design with a fully inclined angle of 45°.The winding and core are equipped with elastic fixing devices, due to which the transformer has a low no-load level.losses and noise.The surface of the iron core is processed using special technology.The iron core is moderately clamped by the tension screw, and the upper and lower clamps are connected by tension plates and fixed to the base and the winding as a whole.The winding is fixed with elastic gaskets.The buffer design reduces vibration intensity.windings and reduce noise.
4. The lead wire terminal is fixed at the top of the winding, the tap is in the middle of the winding, and the low voltage wire terminal is a plate conductive rod and cold pressure welded.
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