Power Transformer 110/220kv for Efficient Power Transmission Solutions

• Customization: Available
• Application: Power
• Phase: Three
• Model NO.: SFSZ11
• Core: Core-type Transformer
• Cooling Method: Oil-immersed Type Transformer
• Winding Type: Multi-winding Transformer
• Certification: ISO9001-2000, ISO9001, CE, ISO14001, ISO45001, ISO50001
• Usage: Power Transformer
• Frequency Characteristics: Power Frequency
• Shape of Core: Ring
• Brand: Ceeg
• Rated Capacity: 6300-420000kVA
• Primary Voltage: 110/121/132/220kv
• Secondary Voltage: 6.3/6.6/10.5/11/35/38.5/63/66/69kv
• Frequency: 50/60Hz
• Impedance: 8%~24%
• Connection Symbol: Ynyn0/Ynd11/D11
• Tapping Range: ±2*2.5%/±8*1.25%
• Transport Package: International Wooden Case or According to Client′s
• Trademark: CEEG
• Origin: Jiangsu, China
• HS Code: 8504349000

Product Description

With over 30 years of expertise, China Electric Equipment (Jiangsu) Transformer Manufacture Co., Ltd. (CEEG) has distinguished itself as a leader in the power transmission and distribution sector. As an innovative provider of intelligent transmission and distribution solutions, we proudly hold 52 patents in oil-filled transformers. Our oil-immersed transformers have consistently achieved strong sales for three decades. Our sophisticated in-house high-voltage test station plays a crucial role in ensuring the excellence of our 220kV and 230kV transformers.

 

In 2023, we proudly unveiled our CNAS (China National Accreditation Service for Conformity Assessment) testing center. This milestone signifies our capability to conduct testing services in line with international accreditation standards (ISO/IEC17025). The testing data and reports produced by our center are endorsed by the CNAS and the International Laboratory Accreditation Cooperation (ILAC), earning recognition across more than 100 countries, including major nations such as the United States, United Kingdom, Germany, France, Netherlands, and Japan, which have signed mutual recognition agreements.


Exquisite Features of the 110kV Oil Transformer

1. Remarkably Low Loss: Achieves a 20% reduction in no-load loss and a 5% reduction in load loss compared to national standards.

2. Exceptionally Low Noise: Delivers natural cooling noise levels under 60dB, surpassing national standards by 3 to 5dB.

3. Impressive Low Partial Discharge: State-of-the-art dust-free operations ensure partial discharge levels remain under 100pC.

4. Robust Short Circuit Resistance: Successfully passed sudden short circuit tests at the prestigious National Transformer Testing Center.

5. Guaranteed Leak-Free Performance: All sealing components are crafted from a single piece of acrylic, and undergo rigorous fluorescence, positive pressure, and negative pressure leak tests.

110kv

SFSZ11 - XXX /XX

S/N	Symbol	Meaning
1	S	Three phases
2	F	Air-cooling
3	S	Three windings
4	Z	On load tap changing
5	11	Symbol of Performance level (11,13)
6	xxx	Rated capacity,kVA
7	xx	Voltage grade of HV winding,kV

 

S(F)11/13-110kV 6300-90000kVA Dual Winding Power Transformer

Capacity kVa	Voltage Ratio & Tapping Range			Vector Group	No Load Loss		Load Loss	No Load Current	Impedance
	HV	Tapping Range	LV		11	13
6300	110 115 121	±2X2.5%	6.3 6.6   10.5	YNd11	7.4	5.92	35	0.62	10.5
8000					8.9	7.12	42	0.62
10000					10.5	8.4	50	0.58
12500					12.4	9.92	59	0.58
16000					15.0	12.0	73	0.54
20000					17.6	14.08	88	0.54
25000					20.8	16.64	104	0.5
31500					24.6	19.68	123	0.48
40000					29.4	23.52	148	0.45
50000					35.2	28.16	175	0.42
63000					41.6	33.28	208	0.38
90000					54.4	43.52	272	0.8	12-14

SS(F)11/13-110kV 6300-63000kVA Three Winding Power Transformer

Capacity kVa	Voltage Ratio & Tapping Range			Vector Group	No Load Loss		Load Loss	No Load Current	Impedance
	HV	MV	LV		11	13			Stepup	Setdown
6300	110±2X2.5%  115±2X2.5%  121±2X2.5%	36 37 38.5	6.3 6.6 10.5    21	YNyn0 d11	8.9	7.12	44	0.66	HV-MV 17.5-18.5 HV-LV 10.5 MV-LV 6.5	HV-MV 10.5-18.5 HV-LV 18-19 MV-LV 6.5
8000					10.6	8.48	53	0.62
10000					12.6	10.08	62	0.59
12500					14.7	11.76	74	0.56
16000					17.9	14.32	90	0.53
20000					21.1	16.88	106	0.52
25000					24.6	19.68	126	0.48
31500					29.4	23.52	149	0.48
40000					34.8	27.84	179	0.44
50000					41.6	33.28	213	0.41
63000					49.2	39.26	256	0.40

 

Outstanding Features of the 220kV Oil Transformer

1. Zero Partial Discharge: Actual measurements reveal partial discharge levels under 50pC, lower than the background noise.

 

2. Superior Efficiency and Low Loss: Cutting-edge core and coil design, combined with advanced leakage magnetic flux control technology, drastically reduces additional and stray losses.

 

3. Ultra-Low Noise: Measured noise is consistently below 60dB, significantly outperforming national standard levels.

 

4. Intelligent Design: Perfectly aligns with the operational demands of intelligent substations.

 

5. Maintenance-Free Innovation: Incorporates air self-cooling methods, fiberglass dry-type bushings, and metal corrugated internal oil-type conservators, eliminating the need for routine on-site maintenance, ideal for unattended substations.

 

6. Space-Saving Compact Structure: Features an advanced 220kV end inlet method, offering a compact design that simplifies transportation and on-site installation.

 

7. Impressive Short Circuit Resistance: Employs foreign short-circuit mechanical force verification procedures, ensuring complete adherence to design requirements throughout all transformer assembly stages.

 

8. Exceptional Over 40-Year Design Life: A unique high-temperature-resistant hybrid insulation system, underpinned by temperature field simulation analysis, guarantees that all transformer components share the same durable lifespan as the transformer itself.

 

9. Unmatched Testing Success: Passes all routine and type tests on the first attempt, with overall performance reaching leading domestic levels.

220kv

230kv

Comprehensive Testing Process