Usage:Power Phase:Three Coil Structure:Toroidal Rated capacity:50-2500kVA Rated voltage:20KV Frequency:50/60Hz Primary voltage:20/22/24kV Secondary voltage:0.4kv Cooling Method:AN
Dry-type transformers are transformers whose cores and windings are not immersed in insulating oil.
1.The coil is reinforced with glass fiber and cast under vacuum with filler epoxy resin.The insulating materials in the coil such as glass fiber are self-extinguishing and they will not generate toxic or harmful gas under high temperature.
2.The high and low-voltage systems are casted under vacuum, thus the coil will not absorb moisture, the clamps of core are subjected to corrosion-resistant treatment and it may run under high temperature or orther serious environments.
3.Flame retardancy, explosion-proof and no environmental contamination.
Because dry-type transformers have the advantages of strong short-circuit resistance, small maintenance workload, high operating efficiency, small size, and low noise, they are often used in places with high performance requirements such as fire protection and explosion protection.
1. Safety, fire prevention, no pollution, can be directly operated in the load center
2.Adopt domestic advanced technology, high mechanical strength, strong short-circuit resistance, small partial discharge, good thermal stability, high reliability and long service life;
3. Low loss, low noise, obvious energy saving effect, maintenance-free;
4. Good heat dissipation performance, strong overload capacity, can increase capacity operation when forced air cooling;
5. Good moisture resistance, suitable for operation in high humidity and other harsh environments;
6. Dry-type transformer can be equipped with perfect temperature detection and protection system. The intelligent signal temperature control system can automatically detect and patrol the respective working temperature of the three-phase windings, can automatically start and stop the fan, and have functions such as alarm and trip;
7. Small size, light weight, small footprint and low installation cost.
Iron core
Using high-quality cold-rolled grain-oriented silicon steel sheet, iron core silicon steel sheet adopts 45 degree full oblique seam to make magnetic flux pass along the direction of the silicon steel sheet seam. Winding form
Tangled
⑵Pouring epoxy resin with quartz sand;
⑶ Glass fiber reinforced epoxy resin casting (ie, thin insulation structure); ⑷Multi-strand glass-fiber-impregnated epoxy resin winding type (3 is generally used because it can effectively prevent the resin from cracking and improve the reliability of the equipment).
High voltage winding Generally adopts multilayer cylindrical or multilayer segmented structure.
Dry-type transformers are widely used in local lighting, high-rise buildings, airports, terminals, CNC machinery, etc.