Dry Type Transformers, Series SG(B)10

These Series SG(B)10 dry type transformers are open style transformers. They feature a high voltage winding outside design and there is a layer of impregnation treated insulating paint on the surface. The transformers offer the advantages of safety, reliability, energy savings, fireproof performance, explosion proof performance, and easy maintenance. The name dry type transformer refers to transformers whose cores and winding are not immersed in insulating oil. The cooling methods include natural air cooling and forced air cooling. All insulating materials are flame retardant and non-toxic. Flammable substances present are less than those of SC(B) series transformers and there is no toxic smoke produced, even when the temperature of the transformer reaches 800℃.

Series SG(B)10 dry type transformers can be installed in moist environments near lakes, seas and rivers, and areas with high fire-proof demands and heavy power usage. They are suitable for airports, subways, hospitals, power plants, petrochemical plants and nuclear power stations.

AC current flows through the primary winding of transformers and produces an alternating magnetic field in transformer cores. Then alternating magnetic field winds on the secondary winding of the same cores and forms voltage, realizing the purpose of changing AC voltage.

• Insulated: Insulation grade H (180℃).
• Safe: Dry type transformers are flame retardant rather than combustion supporting, and they will not explode or release toxic gas.
• Environmentally friendly: Transformer cores adopt high quality and highly magnetic conductive cold rolled silicon steel sheet. Their operating noise is far lower than the national standards, and they can even be recycled.
• Moisture-proof: Due to the use of dense NOMEX insulation, our transformers can still work normally in extremely moist environments. Multiple vacuum pressure immersions are carried out during winding treatment, so the sealing level of wires and mechanical strength of winding are improved again. This also enhances its antibacterial and moisture proof properties.
• Durable: H grade insulation can withstand a high working temperature of 180℃ as the transformers show good heat resistance, high mechanical strength, great heat dissipation, extremely strong overload capacity and long thermal life. They are not affected by thermal expansion and contraction, showing good toughness and elasticity without risk of cracking.
• Economical: Due to the high temperature resistance of the insulation system, the cooling space is largely decreased. Compared with transformers with the capacity and insulation grade, our products feature a compact structure and lighter weight. Compared with ‘09’ type transformers, ‘10’ type transformers have 15% lower no-load losses, largely reducing operating costs.