Dry Type Transformers, Series SG(B)10

Dry Type Transformers, Series SG(B)10
Dry Type Transformers, Series SG(B)10
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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.

Working principle

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.

Parameters
Rated capacity
(KVA)
No-load losses SG10 Load losses 145℃ No-load current (%) Short circuit impedance (%) Sound level
DB(A)
Dimensions (mm)
Without shell L*W*H
Dimensions (mm)
Without shell L*W*H
Product weight
(Kg)
Gauge
(mm)
30 215 655 1 4 40 1050x1050x950 1280x1050x1050 480 400
50 270 320 1050x1050x975 1280x1050x1075 480
80 370 1275 1120x1120x1030 1360x1100x1130 700 550
100 395 1455 1120x1120x1070 1360x1100x1170 720
125 470 1700 41 1120x1120x1070 1390x1100x1170 800
160 540 1960 0.8 1120x1120x1130 1390x1100x1310 900
200 610 2300 1120x1120x1200 1510x1100x1230 1200
250 690 2450 0.7 42 1220x1220x1330 1510x1100x1430 1300
315 840 3050 1220x1220x1450 1510x1100x1430 1480
400 920 3320 0.6 1360x1360x1480 1600x1200x1590 1660 660
500 1110 4150 43 1360x1360x1575 1600x1200x1670 1855
630 1290 5200 1360x1360x1725 1600x1200x1830 2000
630 1270 1900 1560x1560x1680 1810x1200x1700 2000 820
800 1370 6130 0.5 6 45 1560x1560x1680 1710x1200x1780 2400
1000 1570 8650 1580x1200x1550 1820x1200x1825 2920
1250 1680 11640 46 1610x1300x1725 1860x1200x1825 3885
1800 2180 12300 0.4 48 1800x1800x2030 2100x1500x2140 4020 1070
2000 2600 13400 1920x1920x2195 2250x1500x2300 4710
2500 3130 15100 1980x1980x2225 2250x1500x2330 5590
Features
  • 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.
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