SCB9 Type 35KV Epoxy Resin Casting Dry Type Distribution Power Electric Transformer

SCB9 Type 35KV Epoxy Resin Casting Dry Type Distribution Power Electric Transformer

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.
Product description

Model meaning


Overview & features

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.


Service conditions

● 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)


Dimensions & Schematic

Rated capacity
Installation dimension(mm) 
(kVA) 



C1 
C2 
30 
1070 
890 
1050 
660 
660 
50 
1180 
890 
1050 
660 
660 
63 
1220 
890 
1250 
660 
660 
80 
1230 
890 
1350 
660 
660 
100 
1250 
900 
1500 
660 
660 
160 
1540 
920 
1660 
820 
820 
200 
1620 
920 
1750 
820 
820 
250 
1650 
940 
1800 
820 
820 
315 
1670 
940 
1850 
820 
820 
400 
1720 
1150 
1900 
820 
820 
500 
1810 
1150 
1940 
820 
1070 
630 
1850 
1150 
1990 
820 
1070 
800 
1990 
1150 
2010 
820 
1070 
1000 
2020 
1150 
2040 
1070 
1070 
1250 
2080 
1150 
2120 
1070 
1070 
1600 
2130 
1150 
2320 
1070 
1070 
2000 
2180 
1150 
2480 
1070 
1070 
2500 
2200 
1150 
2600 
1070 
1070 
3150 
2580 
1320 
2610 
1070 
1070 
4000 
2680 
1320 
2650 
1070 
1070 
5000 
2890 
1350 
2680 
14750 
1070 
6300 
0980 
1700 
2800 
1475 
1070 


Technical parameters

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 
35
       38.5 
±5%
       ±2×2.5%
0.4
       11
       10.5
       10.6
       3.3
       15 
Dyn11
       Yyn0
       Yd11
       YNd11 
       
0.35
0.85 
2.8 
6.0 
680 
730 
50 
0.45
1.10 
2.8 
720 
770 
63 
0.50
1.45 
2.6 
780830 
80 
0.58
1.95 
2.5 
810 
860 
100 
0.65
2.30 
2.4 
890 
950 
125 
0.73
2.60 
2.3 
950 
1010 
165 
0.86
2.90 
2.2 
100 
1060 
200 
1.00
3.35 
2.2 
1260 
1320 
250 
1.15
3.85 
2.21420 
1480 
315 
1.32
4.20 
2.0 
1730 
1790 
400 
1.55
5.40 
2.0 
1840 
1900 
500 
1.82
6.65 
2.0 
2200 
2270 
630 
2.09
7.73 
1.8 
2630 
2700 
800 
2.459.10 
1.8 
3260 
3330 
1000 
2.72
10.5 
1.8 
3990 
4060 
1250 
3.18
12.8 
1.6 
4470 
4540 
1600 
3.64
15.5 
1.6 
5570 
5640 
2000 
4.72
18.2 
1.4 
6410 
6480 
2500 
5.00
21.5 
1.4 
6930 
7030 


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.

If you the scb9 type 35kv epoxy resin casting dry type distribution power electric transformer caters to your requirement, welcome to buy the high quality equipment made in China from us. As one of the leading manufacturers and suppliers of various industrial electrical products in China, we won't let your down.

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