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Dry type transformerSC(B)10 series epoxy resin casting dry-type transformer of class 6-10KV
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It can be widely used in locations where have strict fireproof requirements, such as underground mines, oil fields, metros, power plants, schools, hospitals, commercial centers, high-rise buildings and all indoor systems.

Iron
◎ The iron core is made of imported cold-rolled silicon steel sheets with inclined joint structure, core limbs are bound by unidirectional weftless tape of class F. 
◎ Surface of iron core is encapsulated with epoxy resin, which reduces the no-load noise, no-load current and core noise. 
◎ Clamps and fasteners have gone through special surface treatment that further improves the product appearance quality. 

High-voltage winding 
High-voltage winding applies vacuum casting of stuffing epoxy resin which sharply reduces partial discharge capacity and enhances the electric strength of coils. The inside and outside of the winding is buildup with glass fiber grid overlay which strengthens the mechanical robustness of coils and product’s short-circuit withstand capability, the coil will not split forever.

Low-voltage winding 
Low-voltage winding applies foil structure which solves the problem of axial helix angle when winds and make the ampere-turn of winding distribute evenly. Meanwhile, the coils adopt axial cooling duct to improve the heat dissipation. Between the layers of winding, it applies DMD epoxy resin preliminary immersed cloth and makes it whole solidification forming.

Manufacturing process
The coils are wound on high precision winding machine. We adopt foil type winding structure for low-voltage windings. Transformers of larger capacity are equipped with ventilating duct. It is vacuum drying, casting and solidification followed the winding, all processes are operated accord with the technological requirements under strict monitoring and may be regulated as appropriate. The precise manufacturing of casting ensures no bubble or cavity in coil, and gets high quality operation of transformer finally. 

Temperature control and air cooling systems
It adopts crossflow top-blow fan which is featured with low noise, high wind pressure and good looking, etc., it improves the safety and reliability of the operation of transformer.

Protective shell and outgoing bus 
The shell makes further protection for the transformer. For user’s option, the grade of protection has IP20, IP23, etc. Shell materials include cold-rolled steel sheets, stainless steel sheets and so on for option. The low-voltage outgoing adopts standard outgoing bus, side outgoing and top outgoing are available, or design special outgoing modes for users.
● Installation height: altitude shall not exceed 1000m; 
● Waveform of source voltage is approximate to sine wave; 
● Symmetry of multi-phase source voltage: 
   connected voltage of multi-phase transformer should be symmetrical approximately.
● Ambient temperature:
   Max temperature +40℃

   Max daily mean air temperature: +30℃ 
   Max annual mean air temperature: +20℃
   Min air temperature: -30℃ (applicable for indoor transformers)
Rated capacity  Installation dimension(mm) 
(kVA) L W H C1 C2
30 580 405 600 300 300
50 620 475 730 300 350
80 900 500 820 450 450
100 940 500 860 450 450
125 970 500 890 450 450
160 1060 650 930 550 550
200 1100 650 985 550 550
250 1140 760 1070 660 660
315 1170 760 1130 660 660
400 1260 760 1155 660 660
500 1300 760 1190 660 660
630 1370 760 1220 660 660
630 1370 760 1190 660 660
800 1440 760 1225 660 660
1000 1480 920 1330 820 820
1250 1580 920 1480 820 820
1600 1660 920 1550 820 820
2000 1720 920 1710 820 820
2500 1820 920 1780 1070 1070

SC (B) 10-30 ~ 2500/10 transformer

Rated capacity

Voltage combination Connection group  Loss (KW) No-load current  Short-circuit impedance  Weight (kg)
(kVA) HV (kV) High-voltage tapping range LV (kV) symbol No-load On-load(120°) (%) (%) Body weight  Weight with shell
30 6
6.3
6.6
10
10.5
11

 

±5%
±2×2.5%
0.4 Yyn0
Dyn11
0.19 0.71 1.6 4.0 220 250
50 0.27 1.00 1.4 360 410
63 0.37 1.38 1.2

450

190
80 0.40 1.57 1.1 540 580
100 0.47 1.85 1.0 630 670
125 0.54 2.13 1.0 745 795
165 0.62 2.52 0.9 850 910
200 0.72 2.75 0.8 1010 1065
250 0.88 3.47

0.8

1235 1295
315 0.98 3.99 0.7 1370 1430
400 1.16 4.88 0.7 1565 1625
500 1.34 5.87 0.6 1855 1930
630 1.30 5.96 0.6 6.0 1800 1875
800

1.52

6.95 0.5 2140 2215
1000 1.77 8.13 0.45 2535 2620
1250 2.09 9.69 0.45 3100 3190
1600 2.45 11.73 0.45 3705 3830
2000 3.32 14.45 0.4 4230 4380
2500 4.00 17.17 0.4 5230 5380


Order guide

Please specify the product model, rated capacity, HV/LV rated voltage and high-voltage tapping range, phase number, frequency, connection group symbol and so on in the order.

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