SCB9 Type 6-10KV Epoxy Resin Casting Dry Type Distribution Power Electric Transformer

SCB9 Type 6-10KV Epoxy Resin Casting Dry Type Distribution Power Electric Transformer

As the coils of resin-insulated dry-type transformer are encapsulated by the epoxy resin, they are nonflammable, fireproof, explosion-proof, maintenance-free, no pollution, small volume, and can be installed in the load center directly.
Product description

Model meaning


Overview & features

As the coils of resin-insulated dry-type transformer are encapsulated by the epoxy resin, they are nonflammable, fireproof, explosion-proof, maintenance-free, no pollution, small volume, and can be installed in the load center directly. Meanwhile, the scientific and reasonable design and casting technology enable the products to have lower discharge capacity, low noise and strong heat dissipation, they are able to run for a long time under 140% rated load under forced air cooling condition. Besides, the products are equipped with intelligent temperature controllers, have functions of trouble alarm, over-temperature alarm, over-temperature tripping and black box, can be connected with the computer through RS485 serial interface to realize centralized monitoring and control.

Due to the above features, our epoxy resin casting dry type transformers can be widely applied to power transmission and transformation systems in hotels, restaurants, airports, high-rise buildings, commercial centers, residential districts, and the severe environments such as underground railways, smelting, electric power plants, steamships, offshore oil-drilling platforms, etc.

Iron core

◎ 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 capacityInstallation dimension
(kVA) 



C1
C2
30
580
405
600 
300
300

50
620 
475
730 
300 
350 

80
900
500
820
450 
450 

125 
970 
500
890 
450
450

160
1060
650 
930
550
550

200
1100
650
985 
550
550 

250 
1140
760 
1070 
550
550

315
1170 
760 
1130 
660
660

400
1260 
760
1155
660
660 

500
1300 
760 
1190 
660
660 

630 
1370 
760
1220
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


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

       6
       6.3
       6.6
       10
       10.5
       11
 



       ±5%
       ±2×2.5%

       0.4
 



       Yyn0
       Dyn11 
0.22
0.75
3.2
  4.0 
220
250
50 
0.31
1.05 
2.8
360
410
80
0.42
1.46
2.6 
450
190
100 
0.45
1.67
2.4 
540
580 
125 
0.53
1.95
2.2
630
670
160
0.61
2.25
2.2
745
795
200 
0.70
2.67 

850
910
250 
0.81
2.92
2.2 
1010
1065 
315 
0.99
3.67 
1.8 
1235
1295
400
1.10
4.22
1.8 
1370
1430 
500
1.35
5.17
1.8 
1565 
1625 
630 
1.51
6.22
1.6 
1855
1930
630 
1.46
6.31 
1.6 
6.0
1800
1875
800
1.71
7.36 
1.6 
2140
2215
1000 
1.99
8.60 
1.4 
2535 
2620
1250 
2.35
10.26 
1.4 
3100 
3190 
1600 
2.75
12.42 
1.4
3705
3830 
2000 
3.74
15.30 
1.2
4230
4380
2500
4.50
18.18
1.2 
5230
5280

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 6-10kv 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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