Epoxy Cast Three phase Dry type Transformer

Epoxy resin dry-type transformer takes epoxy resin as insulating material. High and low voltage windings are wound with copper tape (foil), poured with epoxy resin in vacuum and cured, constituting a high-strength fiberglass body structure. Insulation grade F, H level. Epoxy resin dry-type transformer is characterized by good electrical performance, strong resistance to lightning impact, strong short-circuit resistance, small size and light weight. Temperature display controller can be installed to display and control the operation temperature of the transformer winding to ensure the normal service life of the transformer.

1. Strong resistance to lightning impact: because the high and low voltage windings are all made of copper tape (foil), low interlayer voltage, large capacitance, foil winding starting voltage distribution is close to linear, so it has strong resistance to lightning impact.

2. Strong short-circuit resistance: due to the high and low-voltage winding reactance height is the same, no helix angle phenomenon, the coil between the ampere-turn balance, high and low-voltage winding due to short-circuit caused by the axial force is almost zero, so its resistance to short-circuit ability.

3. Anti-cracking performance: dry-type transformer using epoxy resin "thin insulation (1-3mm) technology", to meet the low temperature, high temperature and temperature change range of occasions, to meet the long-term operation of the anti-cracking requirements, to solve the "thick insulation (6mm) technology" difficult to solve the cracking problem. Solve the "thick insulation (6mm) technology" is difficult to solve the cracking problem, so that the dry-type transformer in the technology to get a reliable guarantee.

4. Strong overload capacity: if the same capacity of the transformer load loss is equal, the area of copper foil will be copper conductor than the corresponding increase in volume increases, filler resin dosage increased accordingly, so the winding thermal capacitance, transformer short-term overload capacity.

5. Flame retardant performance: the epoxy resin vacuum casting process without environmental pollution, is conducive to environmental protection, the transformer has a maintenance-free, moisture-proof, moisture resistance, flame retardant and self-extinguishing characteristics, suitable for a variety of environments and harsh conditions of the occasion.

6. Low loss, low noise: the iron core is usually insulated with mineral oxides of high-quality cold-rolled silicon steel sheet, through advanced processing technology, so that the level of loss and no-load current is reduced to a minimum, and obtain a very low noise level. Meanwhile, the assembled core is sealed and coated with F grade resin paint on its surface to prevent dust, corrosion, smoke and rust.

7. High temperature resistance grade: epoxy resin dry-type transformer belongs to class F or H insulation, and can be safely operated under 155℃ or 180℃ high temperature for a long time. In the same capacity, it's small volume, light weight, can save the installation cost, etc.

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