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CEEG 66kV Oil-Immersed Three-Phase Traction Power Transformers
Brand: CEEG
Type: Oil-Immersed
Phase: Three-Phase
Winding: Double Winding
Rated Capacity: 3150kVA-63000kVA
Impedance: 9.0%
Nature of Business: Manufacturer
Contact Us
CEEG 66kV Oil-Immersed Three-Phase Traction Power Transformers
Brand: CEEG
Type: Oil-Immersed
Phase: Three-Phase
Winding: Double Winding
Rated Capacity: 3150kVA-63000kVA
Impedance: 9.0%
Nature of Business: Manufacturer
Contact Us

66KV Power Transformers (3)-bdkl.jpgPerformance Characteristics:

1. Low Loss

No-load loss is reduced by more than 10% compared to the current national standard GB6451-2015, and load loss is reduced by more than 5% compared to the current national standard GB6451-2015. The performance complies with the GB20052-2020 energy efficiency standard.

2. Low Noise

The self-cooling noise level is below 60dB, nearly 20dB lower than the national standard. For users with special requirements, ultra-low noise transformers can be customized.

3. Low Partial Discharge

For 110kV production tasks, the company introduces a modern enterprise management model. The entire process for 110kV products will be conducted in a dust-free environment. All metal parts and insulation parts inside the transformer are rounded, and the partial discharge level is controlled below 100pc.

4. Strong Short-Circuit Resistance

The 110kV transformer is nationally certified, ensuring no damage due to sudden short circuits, with extremely high reliability.

5. Aesthetic Appearance

Fully polished and rust-removed, with powder electrostatic spraying achieving household appliance paint effect. Wide strip radiators are used, which are not prone to fading.

6. Leak-Proof

All seals are made of acrylate material and adopt one-time molding technology, ensuring no interfaces. The company solemnly promises no leakage. Fluorescence, positive pressure, and negative pressure leak tests are employed.

Application Scenarios:

The transformer is beneficial for peak summer loads. It is suitable for main power grids with high load rates under high temperatures, as well as places with impact loads and continuous overload requirements, such as steel, metallurgy industries, railway transportation, power plants, and hydropower stations.

CEEG has independently developed a new type of high-temperature resistant transformer that adopts a hybrid insulation structure. The hotspots within the device use DuPont's Nomex insulation material (Class C heat resistance) and mineral oil. This design truly meets the operational requirements of "high overload, safety, and reliability" throughout its lifecycle. This product is an excellent choice for users with particularly high transformer requirements or those seeking upgrades and expansions (possibly based on existing transformers).

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Parameters.png

SZ22-6300~63000/66kV Oil-Immersed Three-Phase Double Winding OLTC Power Transformer  (NX1)

Rated Capacity(kVA)

Voltage Combination

Vector Group

No-Load Loss (kW)

Load Loss
(kW) (75℃)

No-Load Current (%) 

Impedance (%)

High Voltage (kV) 

Tapping Range 

Low Voltage (kV) 

6300

63
66
69

±8x1.25%

6.3
6.6
10.5

YNd11

4.40

30.8

0.60

9.0

8000

5.30

36.5

0.60

10000

6.20

43

0.56

12500

7.40

51.1

0.56

16000

8.90

62.8

0.52

20000

10.60

76.1

0.52

25000

12.50

90

0.48

31500

14.80

108

0.44

40000

17.70

126.9

0.44

50000

20.90

150.3

0.40

63000

24.70

178.2

0.36

SZ20-6300~63000/66kV Oil-Immersed Three-Phase Double Winding OLTC Power Transformer  (NX2)

Rated Capacity(kVA)

Voltage Combination

Vector Group

No-Load Loss (kW)

Load Loss
(kW) (75℃)

No-Load Current (%) 

Impedance (%)

High Voltage (kV) 

Tapping Range 

Low Voltage (kV) 

6300

63
66
69

±8x1.25%

6.3
6.6
10.5

YNd11

5.20

30.8

0.60

9.0

8000

6.20

36.5

0.60

10000

7.30

43

0.56

12500

8.70

51.1

0.56

16000

10.50

62.8

0.52

20000

12.50

76.1

0.52

25000

14.80

90

0.48

31500

17.50

108

0.44

40000

20.90

126.9

0.44

50000

24.70

150.3

0.40

63000

29.20

178.2

0.36

SZ18-6300~63000/66kV Oil-Immersed Three-Phase Double Winding OLTC Power Transformer  (NX3)

Rated Capacity(kVA)

Voltage Combination

Vector Group

No-Load Loss (kW)

Load Loss
(kW) (75℃)

No-Load Current (%) 

Impedance (%)

High Voltage (kV) 

Tapping Range 

Low Voltage (kV) 

6300

63
66
69

±8x1.25%

6.3
6.6
10.5

YNd11

6.40

32.5

0.6

9.0

8000

7.70

38.5

0.6

10000

9.00

45.4

0.56

12500

10.70

54

0.56

16000

12.90

66.3

0.52

20000

15.40

80.4

0.52

25000

18.20

95

0.48

31500

21.50

114

0.44

40000

25.80

134

0.44

50000

30.40

158.7

0.4

63000

35.90

188.1

0.36

SZ22-6300~63000/66kV Oil-Immersed Three-Phase Double Winding OLTC Power Transformer  (NX1)

Rated Capacity(kVA)

Voltage Combination

Vector Group

No-Load Loss (kW)

Load Loss
(kW) (75℃)

No-Load Current (%) 

Impedance (%)

High Voltage (kV) 

Tapping Range 

Low Voltage (kV) 

6300

63
66
69

±8x1.25%

6.3
6.6
10.5

YNd11

4.40

30.8

0.60

9.0

8000

5.30

36.5

0.60

10000

6.20

43

0.56

12500

7.40

51.1

0.56

16000

8.90

62.8

0.52

20000

10.60

76.1

0.52

25000

12.50

90

0.48

31500

14.80

108

0.44

40000

17.70

126.9

0.44

50000

20.90

150.3

0.40

63000

24.70

178.2

0.36

SZ20-6300~63000/66kV Oil-Immersed Three-Phase Double Winding OLTC Power Transformer  (NX2)

Rated Capacity(kVA)

Voltage Combination

Vector Group

No-Load Loss (kW)

Load Loss
(kW) (75℃)

No-Load Current (%) 

Impedance (%)

High Voltage (kV) 

Tapping Range 

Low Voltage (kV) 

6300

63
66
69

±8x1.25%

6.3
6.6
10.5

YNd11

5.20

30.8

0.60

9.0

8000

6.20

36.5

0.60

10000

7.30

43

0.56

12500

8.70

51.1

0.56

16000

10.50

62.8

0.52

20000

12.50

76.1

0.52

25000

14.80

90

0.48

31500

17.50

108

0.44

40000

20.90

126.9

0.44

50000

24.70

150.3

0.40

63000

29.20

178.2

0.36

SZ18-6300~63000/66kV Oil-Immersed Three-Phase Double Winding OLTC Power Transformer  (NX3)

Rated Capacity(kVA)

Voltage Combination

Vector Group

No-Load Loss (kW)

Load Loss
(kW) (75℃)

No-Load Current (%) 

Impedance (%)

High Voltage (kV) 

Tapping Range 

Low Voltage (kV) 

6300

63
66
69

±8x1.25%

6.3
6.6
10.5

YNd11

6.40

32.5

0.6

9.0

8000

7.70

38.5

0.6

10000

9.00

45.4

0.56

12500

10.70

54

0.56

16000

12.90

66.3

0.52

20000

15.40

80.4

0.52

25000

18.20

95

0.48

31500

21.50

114

0.44

40000

25.80

134

0.44

50000

30.40

158.7

0.4

63000

35.90

188.1

0.36

S22-3150~63000/66kV  Oil-Immersed Three-Phase Double Winding Non Excitation Power Transformers (NX1)

Rated Capacity(kVA)

Voltage Combination

Vector Group

No-Load Loss (kW)

Load Loss
(kW) (75℃)

No-Load Current (%) 

Impedance (%)

High Voltage (kV) 

Tapping Range 

Low Voltage (kV) 

3150

63
66
69

±5%

±2x2.5%

6.3
6.6
10.5

YNd11

2.20

20.7

0.84

8.0

4000

2.60

24.6

0.80

5000

3.10

27.6

0.68

6300

4.00

30.8

0.60

9.0

8000

4.90

36.5

0.60

10000

5.80

43

0.56

12500

6.80

51.1

0.56

16000

8.30

62.8

0.52

20000

9.70

76.1

0.52

25000

11.40

90

0.48

31500

13.50

108

0.44

40000

16.20

126.9

0.44

50000

19.40

150.3

0.40

63000

22.90

178.2

0.36

S20-3150~63000/66kV  Oil-Immersed Three-Phase Double Winding Non Excitation Power Transformers (NX2)

Rated Capacity(kVA)

Voltage Combination

Vector Group

No-Load Loss (kW)

Load Loss
(kW) (75℃)

No-Load Current (%) 

Impedance (%)

High Voltage (kV) 

Tapping Range 

Low Voltage (kV) 

3150

63
66
69

±5%

±2x2.5%

6.3
6.6
10.5

YNd11

2.60

20.7

0.84

8.0

4000

3.10

24.6

0.80

5000

3.70

27.6

0.68

6300

4.70

30.8

0.60

9.0

8000

5.80

36.5

0.60

10000

6.80

43

0.56

12500

8.10

51.1

0.56

16000

9.80

62.8

0.52

20000

11.40

76.1

0.52

25000

13.50

90

0.48

31500

16.00

108

0.44

40000

19.10

126.9

0.44

50000

22.90

150.3

0.40

63000

27.00

178.2

0.36

S18-3150~63000/66kV Oil-Immersed Three-Phase Double Winding Non Excitation Power Transformers (NX3)

Rated Capacity(kVA)

Voltage Combination

Vector Group

No-Load Loss (kW)

Load Loss
(kW) (75℃)

No-Load Current (%) 

Impedance (%)

High Voltage (kV) 

Tapping Range 

Low Voltage (kV) 

3150

63
66
69

±5%

±2x2.5%

6.3
6.6
10.5

YNd11

3.20

21.9

0.84

8.0

4000

3.80

25.9

0.80

5000

4.60

29.2

0.68

6300

5.80

32.5

0.60

9.0

8000

7.10

38.5

0.60

10000

8.40

45.4

0.56

12500

9.90

54

0.56

16000

12.00

66.3

0.52

20000

14.10

80.4

0.52

25000

16.60

95

0.48

31500

19.70

114

0.44

40000

23.50

134

0.44

50000

28.20

158.7

0.40

63000

33.30

188.1

0.36

CEEG production ability (2).jpgCEEG Transformer Production Base covers an area of over 600 acres (40 hectares), with a total construction area of 180,000 square meters and a workforce of more than 1,200 workers. Equipped with a complete set of world-class transformer production and testing equipment including cutting, vacuum casting, vacuum impregnation, and testing, it has an annual production capacity of 30 million kVA of power transformers.

The factory possesses a comprehensive set of cutting-edge equipment representing industry-leading standards, including shearing machines, fully automatic winding machines, robotically operated automatic stacking machines, Germany's Hedrich vacuum casting tanks, vacuum impregnation equipment, air cushion transport vehicles, fully enclosed production workshops with a cleanliness level of 100,000, 20-ton vertical winding machines, 10-ton horizontal winding machines, kerosene gas-phase drying equipment, and 200-ton cranes. Additionally, it has pioneered the application of transformer collaborative design platforms in the industry, effectively integrating product data, product development, and production processes.

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