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SC(B) Cast Resin Transformer

CEEG's cast resin dry-type transformer is well-suited for indoor settings demanding fire and explosion protection, high temperature and moisture resilience, like commercial centers, residential areas, hospitals, and factories. It also meets the rigorous standards for special outdoor environments, such as petrochemical enterprises, and its excellent resilience to seasonal load variations and overload conditions makes it a highly reliable distribution transformer. 
 
In addition to regular models, we also provide rectifier transformers, dual-voltage transformers, double-split transformers, and other special transformers catered to specific needs.  
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Cast Resin Transformer  Basic Parameters

  Standard: IEC60076
  Rate High Voltage: 6/6.3/6.6/10/10.5/11/20/35kv
  Rated Low Voltage: 0.4kV/10.5
  Capacity: 100-25000kVA
  Core material: Silicon Steel
  Insulation class: H or C
  Cooling way: AN/AF
  Impedance: 4-8%Vector group: Dyn11/Yyn0
  Tapping Range: ±2*2.5%/±5%
  Working temperature: -20℃~60℃
  Please check the enclosed product manual for specific parameters.



Product Features

  • Highly reliable with low loss, low partial discharge, low noise (nano paint self-leveling technology is used on product surface), and robust heat dissipation capacity.


  • Outstanding moisture-resistant performance, capable of operation in 100% humidity conditions. Strong short-circuit resistance, can withstand 150% overload in forced air-cooling conditions.


  • Using electric field, temperature field, and magnetic field simulation analysis, and stands as one of the earliest manufacturers to pass KEMA’s E2, C2, and F1 tests for cast resin dry type transformers in China.


  • Support a dual-mode (Standalone and grid-connected) structure solution to meet diverse customer needs


  • Provide intelligent transformer solutions through real-time online big data cloud diagnosis and other technologies



10kv Series

  1. Support for customization with parameters exceeding IEC standards.

  2. Safety, flame retardant, fire protection, and pollution-free operation, suitable for installation in load centers.

  3. Maintenance-free and easy to install, offering low overall operating costs.

  4. Low temperature rise with high reliability.

  5. A stable structure offers strong seismic resistance.

Scope of application: The product’s strong environmental adaptability allows it to be installed in environmentally demanding places, especially those having large seasonal load fluctuations or overload requirements.



35kV Series

  1. The winding structure is optimized through dynamic thermal stability simulation analysis, resulting in strong short-circuit resistance.

  2. Capable of operating under long-term overload conditions without air cooling, with a strong overload capacity.

  3. The winding capacitance is carefully distributed to provide strong impact resistance.

  4. The product is flame-retardant and self-extinguishing, with no toxic gas emissions.

Scope of Application: Densely populated urban substations, data centers, and industrial facilities with limited space.



iron core

Transformer Core

Designed to minimize stray flux losses, the iron is manufactured of grain-oriented and cold-rolled silicon steel plates with high magnetic conductivity. All laminations were lap-jointed at 45 degrees with 7 stepping seams. The surface is covered with special moisture-proof and rust-proof coating, preventing oxidation and corrosion and reducing noise.



Hedrich vacuum casting tank


High-voltage (HV) Coil

The HV copper coil features a multi-layer segmented cylindrical structure, reinforced with glass fiber and cast with epoxy resin using Hedrich vacuum casting equipment operating at 1-3 bar pressure, resulting in strong mechanical strength. This construction ensures that the partial discharge remains below 5PC.



                                                                                            

                                                                                    

Low-voltage (LV) Coil

The LV coil is made of copper foil. The low voltage winding is made of high-quality foil conductor and wound on an automatic foil winding machine. The foil winding machine adopts the "foil wire hydraulic energy-saving tension winding device" technology, ±0.5 high-precision detection, and advanced argon arc welding technology, which plays a key role in ensuring the coil winding quality.


winding machine copper tape  



Temperature Monitoring Device

All transformers are equipped with overheat protection devices. The device mainly detects and controls the transformer temperature through the PT thermistor embedded in the low-voltage coil, and outputs digital signals through the RS232/485 communication interface. It can provide the following functions:

1. Display the temperature value of the three-phase winding during transformer operation

2. Display the temperature value of the hottest phase winding

3. Overtemperature alarm and trip

4. Sound alarm, light alarm, and fan start



Cooling System

Under normal use conditions In natural air cooling (AN), the transformer can continuously output 100% of the rated capacity. Under normal use conditions In strong wave air cooling (AF), the transformer can increase  50% capacity to cope with emergency overloads or intermittent overload operations. We do not suggest forced air cooling (AF)  in long-term continuous overload operation due to the large increase in load loss and impedance resistance.



Transformer Enclosure

CEEG offers a range of enclosure options suitable for both indoor and outdoor applications, with varying levels of protection including IP20, IP23, IP32, IP54, and more. Materials vary from iron, stainless steel, aluminum alloy, among others. Designed as an assembly structure, facilitating easy disassembly at the installation site. The top cover is removable for convenient access and maintenance.


enclosure



Notable Clients

LafargeHolcim, Heidelberg Materials



Technical Parameters

We can produce SC(B)10-100~2500/10 up to SC(B)24-100~2500/10

SC(B)10-100~2500/10

Rated High Voltage:10(10.5,11,6.6,6.3,6)kV, Rated Low Voltage:0.4kV

Vector Group: Dyn11or Yyn0, Tap Range:±2*2.5%

Model

Impedance %

No Load Loss (W)

(75℃)Load Loss   (W)

No Load Current %

Noise Level (dB)

SC(B)10-100/10

4

400

1371

0.7

42

SC(B)10-125/10

4

470

1616

0.7

43

SC(B)10-160/10

4

540

1860

0.7

43

SC(B)10-200/10

4

620

2209

0.7

43

SC(B)10-250/10

4

720

2410

0.7

43

SC(B)10-315/10

4

880

3030

0.7

45

SC(B)10-400/10

4

980

3484

0.7

45

SC(B)10-500/10

4

1160

4260

0.6

46

SC(B)10-630/10

4

1340

5134

0.6

46

SC(B)10-630/10

6

1300

5200

0.6

48

SC(B)10-800/10

6

1520

6020

0.5

49

SC(B)10-1000/10

6

1770

7090

0.4

50

SC(B)10-1250/10

6

2090

8460

0.4

51

SC(B)10-1600/10

6

2450

10240

0.3

51

SC(B)10-2000/10

6

3050

12600

0.3

52

SC(B)10-2500/10

6

3600

15000

0.3

53

SCB10-1600/10

8

2450

11263

0.3

51

SCB10-2000/10

8

3035

13882

0.3

52

SCB10-2500/10

8

3600

16414

0.3

53


SC(B)18-100~2500/10

Rated  High Voltage:10(10.5,11,6.6,6.3,6)kV, Rated Low Voltage:0.4kV

Vector  Group: Dyn11or Yyn0, Tap Range:±2*2.5% 

Model

Impedance %

No Load Loss (W)

(75℃)Load Loss   (W)

No Load Current %

Noise Level (dB)

SC(B)18-100/10

4

230

1240

0.7

42

SC(B)18-125/10

4

270

1450

0.7

43

SC(B)18-160/10

4

310

1670

0.7

43

SC(B)18-200/10

4

360

1990

0.7

43

SC(B)18-250/10

4

415

2170

0.7

43

SC(B)18-315/10

4

510

2730

0.7

45

SC(B)18-400/10

4

570

3140

0.7

45

SC(B)18-500/10

4

670

3830

0.6

46

SC(B)18-630/10

4

775

4610

0.6

46

SC(B)18-630/10

6

750

4690

0.6

48

SC(B)18-800/10

6

875

5470

0.5

49

SC(B)18-1000/10

6

1020

6430

0.4

50

SC(B)18-1250/10

6

1205

7610

0.4

51

SC(B)18-1600/10

6

1415

9230

0.3

51

SC(B)18-2000/10

6

1760

11420

0.3

52

SC(B)10-2500/10

6

2080

13540

0.3

53

SC(B)10-1600/10

8

1415

10160

0.3

51

SC(B)10-2000/10

8

1760

12530

0.3

52

SC(B)10-2500/10

8

2080

14830

0.3

53


SC(B)10-200~2500/20

Rated High Voltage:20(10.5,11,6.6,6.3,6)kV, Rated Low Voltage:0.4kV

Vector Group: Dyn11or Yyn0, Tap Range:±2*2.5% 

Isulation Level: LI 125 AC 50/ LI AC 3

Model

Impedance %

No Load Loss (W)

(75℃)Load Loss   (W)

No Load Current %

Noise Level (dB)

SC(B)10-200/20

6

730

2565

1.0

47

SC(B)10-250/20

6

840

2985

1.0

47

SC(B)10-315/20

6

970

3560

0.9

48

SC(B)10-400/20

6

1150

4225

0.8

48

SC(B)10-500/20

6

1350

5055

0.8

50

SC(B)10-630/20

6

1530

5970

0.7

50

SC(B)10-800/20

6

1750

7210

0.6

51

SC(B)10-1000/20

6

2070

8540

0.5

52

SC(B)10-1250/20

6

2380

10040

0.5

52

SC(B)10-1600/20

6

2790

12050

0.4

53

SC(B)10-2000/20

6

3240

14230

0.4

53

SC(B)10-2500/20

6

3870

16850

0.3

54


SC11-800~25000/35

Rated   High Voltage:35(38.5,37.5,36.5,33)kV,  Rated Low Voltage:10.5(11,6.0,6.3,3.15)kV

Vector   Group: Yd11, YNd11, or Dyn11, Tap Range:±2*2.5%

Model

Impedance  %

No   Load Loss (W)

(75℃)Load Loss   (W)

No   Load Current %

Noise   Level (dB)

SC11-800/35

6

2025

9400

0.6

50

SC11-1000/35

6

2400

10900

0.6

50

SC11-1250/35

6

2815

12900

0.5

50

SC11-1600/35

6

3320

15400

0.5

50

SC11-2000/35

7

3805

18200

0.45

52

SC11-2500/35

7

4370

21800

0.45

52

SC11-3150/35

8

5425

24500

0.4

53

SC11-4000/35

8

6315

29400

0.4

53

SC11-5000/35

8

7530

34900

0.35

54

SC11-6300/35

8

8910

40800

0.35

54

SC11-8000/35

9

10170

46000

0.3

56

SC11-10000/35

9

11610

55500

0.25

60

SC11-12500/35

9

14130

64600

0.2

60

SC11-16000/35

9

17370

76000

0.2

62

SC11-20000/35

10

20610

85500

0.2

62

SC11-25000/35

10

24390

101000

0.2

64


Finished products area


product testing


35kv Cast Resin Dry-Type Transformer

35kV Cast Resin Transformer


 Dual-voltage Transformer

Dual-voltage transformer

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