CEEG 110KV Oil-Immersed Double Winding OLTC Power Transformer For Railway

railway transformers (3)-hurq.jpg

Main Structural Features:

NOMEX® Insulation + Transformer Insulation Oil

1. High-Temperature Resistance for Enhanced Safety

At an ambient temperature of 40°C, it can operate continuously at 100% load. Under the same temperature, the continuous load rate is on average 20% higher than that of oil-immersed transformers.

2. Low Loss for Energy Efficiency

Energy savings of 20% compared to ordinary transformers.

3. Maintenance-free and Environmentally Friendly

The lifespan of the seals matches that of the transformer. All materials are recyclable.

Technical Innovations:

1. High-temperature resistant hybrid insulation system.

2. Compact structural design.

3. Seven-level temperature control technology ensuring operational safety.

4. Thirty-year lifespan design.

5. Fully automated robotic lamination with a 45-degree fully oblique seven-level step lamination structure.

Utility Model Patents and Invention Patents:

1. 110kV Transformer Body Lifting Structure: ZL2008 20238182.6

2. 110kV Plug-in Cable Terminal Transformer Body Lead Structure: ZL200820159647.9

3. 110kV Power Transformer On-load Tap-Changing Structure: ZL2010 29044115.5

4. Current Transformer Structure for Transformer Winding Temperature Measurement: ZL2010 29044111.7

5. Magnetic Shielding Structure for Large Capacity Transformers: ZL2010 2 0635851.0

These utility model and invention patents have significantly promoted and enhanced the quality control and performance of China Electric Power Equipment & Technology Co., Ltd.’s 110kV to 220kV products, laying a solid foundation for product innovation and development.

railway transformers (4)-lrbq.jpg

SZ11-6300~90000/110kV Oil-Immersed Double Winding OLTC Power Transformer
Rated Capacity(kVA)	Voltage Combination			Vector Group	No-Load Loss (kW)	Load Loss (kW) (75℃)	No-Load Current (%)	Impedance (%)
Rated Capacity(kVA)	High Voltage (kV)	Tapping Range	Low Voltage (kV)	Vector Group	No-Load Loss (kW)	Load Loss (kW) (75℃)	No-Load Current (%)	Impedance (%)
6300	110	±8x1.25	6.3 6.6 10.5 11	YNd11	8.1	34	0.74	10.5
8000					9.7	42	0.74
10000					11.7	50	0.68
12500					13.6	59	0.68
16000					16.5	73	0.63
20000					19.5	88	0.63
25000					22.7	104	0.58
31500					27.4	125	0.58
40000					32.9	148	0.53
50000					38.9	183	0.53
63000					46.3	221	0.47
90000					60.5	289	0.36
Notice: The maximum current tapping is at the -10% tapping position.

SZ18-6300~63000/110kV 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 (%)
Rated Capacity(kVA)	High Voltage (kV)	Tapping Range	Low Voltage (kV)	Vector Group	No-Load Loss (kW)	Load Loss (kW) (75℃)	No-Load Current (%)	Impedance (%)
6300	110	±8x1.25%	6.3 6.6 10.5 21	YNd11	6.40	33	0.64	10.5
8000					7.70	40	0.64
10000					9.00	48	0.59
12500					10.70	56	0.59
16000					12.90	69	0.55
20000					15.40	84	0.55
25000					18.20	99	0.51
31500					21.60	117	0.51
40000					25.80	148	0.46
50000					30.60	184	0.46
63000					36.30	220	0.42

SZ20-6300~63000/110kV 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 (%)
Rated Capacity(kVA)	High Voltage (kV)	Tapping Range	Low Voltage (kV)	Vector Group	No-Load Loss (kW)	Load Loss (kW) (75℃)	No-Load Current (%)	Impedance (%)
6300	110	±8x1.25%	6.3 6.6 10.5 21	YNd11	5.20	32	0.64	10.5
8000					6.20	38	0.64
10000					7.30	45	0.59
12500					8.70	53	0.59
16000					10.50	66	0.55
20000					12.50	79	0.55
25000					14.80	94	0.51
31500					17.60	111	0.51
40000					21.00	140	0.46
50000					24.00	175	0.46
63000					29.50	209	0.42

SZ22-6300~63000/110kV 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 (%)
Rated Capacity(kVA)	High Voltage (kV)	Tapping Range	Low Voltage (kV)	Vector Group	No-Load Loss (kW)	Load Loss (kW) (75℃)	No-Load Current (%)	Impedance (%)
6300	110	±8x1.25%	6.3 6.6 10.5 21	YNd11	4.40	32	0.64	10.5
8000					5.30	38	0.64
10000					6.20	45	0.59
12500					7.40	53	0.59
16000					8.90	66	0.55
20000					10.60	79	0.55
25000					12.50	94	0.51
31500					14.90	111	0.51
40000					17.80	140	0.46
50000					21.00	175	0.46
63000					25.00	209	0.42

SS11-6300~90000/110kV Oil-Immersed Three Winding Non Excitation Voltage Regulating Power Transformers
Rated Capacity(kVA)	Voltage Combination			Vector Group	No-Load Loss (kW)	Load Loss (kW) (75℃)	No-Load Current (%)	Impedance (%)
Rated Capacity(kVA)	High Voltage (kV)	Medium Voltage(kV)	Low Voltage (kV)	Vector Group	No-Load Loss (kW)	Load Loss (kW) (75℃)	No-Load Current (%)	Step-up	Step-down
6300	110±2x2.5% 121±2x2.5%	35 38.5	6.3 6.6 10.5 11	YNyn0d11	9.0	45	0.75	high-medium 17-18 high-low 10.5 medium-low 6.5	high-medium 10.5 high-low 17-18 medium-low 6.5
8000					10.8	53	0.71
10000					12.7	62	0.68
12500					15.0	73	0.64
16000					18.0	90	0.60
20000					21.3	106	0.56
25000					25.2	125	0.53
31500					30.0	148	0.49
40000					35.8	178	0.41
50000					42.3	212	0.38
63000					50.2	255	0.38
90000					65.6	333	0.30
Notice: 1. The capacities of the high, medium, and low voltage windings are allocated as (100/100/100)%. 2. The vector group can be YNd11y10 as required. 3. The medium voltage can be chosen to differ from the values in the table or from the tapping points according to user requirements. 4. The maximum current tapping is at the -5% tapping position.

SSZ11-6300~90000/110kV Oil-Immersed Three Winding Non-Excitation Voltage Regulating Power Transformers
Rated Capacity(kVA)	Voltage Combination			Vector Group	No-Load Loss (kW)	Load Loss (kW) (75℃)	No-Load Current (%)	Impedance (%)
Rated Capacity(kVA)	High Voltage (kV)	Medium Voltage(kV)	Low Voltage (kV)	Vector Group	No-Load Loss (kW)	Load Loss (kW) (75℃)	No-Load Current (%)	Impedance (%)
6300	110±8x1.25%	35 38.5	6.3 6.6 10.5 11	YNyn0d11	9.7	45	0.89	high-medium 10.5 high-low 17-18 medium-low 6.5
8000					11.7	53	0.89
10000					13.8	62	0.84
12500					15.9	73	0.84
16000					19.7	90	0.79
20000					23.3	106	0.79
25000					27.5	125	0.74
31500					32.7	148	0.74
40000					39.2	178	0.68
50000					46.4	212	0.68
63000					55.2	255	0.63
90000					72.1	333	0.48
Notice: 1. The capacities of the high, medium, and low voltage windings are allocated as (100/100/100)%. 2. The vector group can be YNd11y10 as required. 3. The medium voltage can be chosen to differ from the values in the table or from the tapping points according to user requirements. 4. The maximum current tapping is at the -10% tapping position.

CEEG production ability (3).jpg CEEG 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.

CEEG certificates.jpg

REQUEST A QUOTE