Ceeg Srn Series (High Temperature Resistant) Oil-Immersed Power Transformers 10kv 35kv 110kv

• Application: Power, Electronic, Rectifier
• Phase: Three
• Core: Core-type Transformer
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: oil-immersed type transformer
• Cooling Method: Dry-type Transformer
• Winding Type: Multi-winding Transformer
• Certification: ISO9001-2000, ISO9001, CCC
• Usage: Single-phase Transformer, Rectifier Transformer, Combined Transformer, Power Transformer, Distribution Transformer
• Frequency Characteristics: Power Frequency
• Shape of Core: Ring
• Brand: Ceeg
• Transport Package: Wooden Case / According Customers′ Demands
• Specification: 1350*1680*2400
• Trademark: CEEG
• Origin: Jiangsu, China
• HS Code: 8504330000
• Production Capacity: 10000 Pieces/Year
• Package Size: 134.00cm * 92.00cm * 135.60cm
• Package Gross Weight: 2500.000kg
• Lead Time: 30 days (1 - 1 Pieces) ; To be negotiated ( > 1 Pieces)

Product Description

High-Temperature Resistance: High-temperature resistant products can operate at 100% full load under an ambient temperature of 40°C, while traditional oil-immersed transformers can only operate at 81% load under the same ambient temperature, posing a risk of high-temperature tripping. High temperature-resistant liquid-filled transformers can operate at full load under high-temperature conditions, ensuring the safety and reliability of power supply in industries where ambient temperatures are high in summer and long-term high-load operation is required.

Low Maintenance Cost: Conventional oil-immersed transformers generally use mineral oil, requiring oil testing and filtration every two to three years. However, high-temperature resistant liquid has superior oxidation resistance and a slower aging rate and requires testing only once every ten years. The coils are insulated with unique NOMEX® insulation paper, providing more stable mechanical and electrical performance under high temperatures. NOMEX® insulation material has a long lifespan at higher temperatures.

Energy-saving and Environmental Protection: After the service life of high-temperature resistant transformers, materials are recycled and reused, meeting the requirements of sustainable development and environmental protection. NOMEX insulation paper can biodegrade after its service life, and the high temperature-resistant oil operates at a much lower temperature than its temperature resistance level, making it recyclable after treatment. The treated waste can be decomposed by soil microorganisms without toxicity, thus avoiding long-term accumulation and environmental pollution.

Safety and Reliability: For specific customers in industries such as cement, steel, coal, and papermaking, high-temperature-resistant products are designed considering the fluctuation and instability of their loads. The insulation system of the product will not be damaged under such conditions, ensuring safe and reliable long-term operation.

SRN-315~75000/35 High-Temperature Resistant Unexcited Voltage Regulating Transformers
Item	Voltage Ratio			Connection Section	No-Load Loss (KW)	Load Loss (KW) 75ºC	No-Load Current (%)	Short Circuit Impedance (%)
Rated Capacity (KVA)	High Voltage (KV)	Low Voltage (KV)	Tapping Range
315	35 38	±5%	0.4	Yyno	0.49	4.76	1.40	6.50
400					0.58	5.75	1.30
500					0.69	6.92	1.20
630					0.83	7.87	1.10
800					0.98	9.41	1.00
1000					1.15	11.54	1.00
1250					1.41	13.94	0.90
1600					1.70	16.67	0.80
800			3.15 3.3 6.3 6.6 10.5 11	Yd11	0.98	9.41	1.00
1000					1.15	11.54	1.00
1250					1.41	13.94	0.90
1600					1.70	16.67	0.80
2000					2.18	18.38	0.70
2500					2.56	19.67	0.60
3150		±5% ±2 *2.5%			3.04	23.09	0.56	7.00
4000					3.62	27.36	0.56
5000					4.32	31.38	0.48
6300					5.25	35.06	0.48	7.50
8000				YNd11	7.20	38.48	0.42
10000					8.70	45.32	0.42
12500					10.08	53.87	0.40	8.00
16000					12.16	65.84	0.40
20000					14.40	79.52	0.40
25000					17.02	94.05	0.32
31500					20.22	112.86	0.32
40000					25.90	150.00	0.28
50000					29.40	210.00	0.28	8.00 10.50
63000					31.20	250.00	0.20
75000					33.40	300.00	0.20

SRN-2000~40000/35 High-temperature Resistant On-load Voltage Regulating Transformers
Item	Voltage Ratio			Connection Section	No-Load Loss (KW)	Load Loss (KW) 75ºC	No-Load Current (%)	Short Circuit Impedance (%)
Rated Capacity (KVA)	High Voltage (KV)	Low Voltage (KV)	Tapping Range
2000	35 38	±3*2.5%	3.15 3.3 6.3 6.6 10.5 11	Yd11	2.30	19.27	0.80	6.5
2500					2.72	20.64	0.80
3150					3.23	24.71	0.72	7
4000					3.87	29.16	0.72
5000					4.64	34.20	0.68
6300					5.63	36.77	0.68	7.5
8000				YNd11	7.87	40.61	0.60
10000					9.28	48.05	0.60	8
12500					10.94	56.86	0.56
16000					13.17	70.32	0.54
20000					15.57	82.78	0.54
25000					17.80	98.80	0.45
31500					21.30	121.90	0.40
40000					26.20	157.50	0.35

S(F)RN-110KV 6300~90000KVA Dual-winding Unexcited Voltage Regulating Transformers
Item	Voltage Ratio			Connection Section	No-Load Loss (KW)	Load Loss (KW) 75ºC	No-Load Current (%)	Short Circuit Impedance (%)
Rated Capacity (KVA)	High Voltage (KV)	Low Voltage (KV)	Tapping Range
6300	110 121	±2*2.5	6.3 6.6 10.5 11	YNd11	6.9	34.9	0.51	10.5
8000					8.4	42.5	0.47
10000					9.9	50.2	0.43
12500					11.7	59.5	0.38
16000					14.1	73.1	0.35
20000					16.5	88.4	0.32
25000					19.5	104.6	0.3
31500					23.1	125.8	0.28
40000					27.6	147.9	0.25
50000					33	183.6	0.22
63000					39	221	0.2
90000					51	289	0.2
Note: maximum current tap is -5%

S(F)RNZ-110KV 6300~63000KVA Three Windings Unexcited Voltage Regulating Transformers
Item	Voltage Ratio			Connection Section	No-Load Loss (KW)	Load Loss (KW) 75ºC	No-Load Current (%)	Step-up
Rated Capacity (KVA)	High Voltage (KV)	Low Voltage (KV)	Tapping Range
6300	110±8*1.25%	35 38.5	6.3 6.6 10.5 11	YNyn0 d11	9	45	0.62	High-Medium 10.5 High-Low 17-18 Medium-Low 6.5
8000					10.8	53.6	0.6
10000					12.8	62.9	0.57
12500					15.1	74	0.55
16000					18.2	90.1	0.51
20000					21.5	106.3	0.51
25000					25.4	125.8	0.46
31500					30.2	148.8	0.42
40000					36.1	178.5	0.36
50000					42.7	212.5	0.32
63000					50.8	255	0.26

1. Reliability of Insulation Technology

Our research spans from initial two-dimensional electric field simulations, three-dimensional electric field measurements, and impact characteristic measurements to later-stage theoretical analysis and simulated experiments on the main insulation, longitudinal insulation, end insulation, insulation of leads, and coil withstand voltage characteristics of transformers. Through years of verification using various methods, we ensure the reliability of transformer insulation.

2. Calculation of leakage magnetic field and reduction of stray loss

Dedicate specialized efforts to calculating and measuring transformer leakage magnetic fields. The research includes shielding structures for leakage magnetic fields, calculations for transformer dynamics and thermal stability, and improvements in transformer dynamic and thermal stability to guarantee accurate calculations and reduced stray losses, thereby enhancing transformer dynamic stability.

3. Precise Analysis of Coil Temperature Fields

Collaborating with numerous domestic universities, we jointly developed programs for calculating coil temperature fields. These programs calculate loss distribution in coils, including resistive losses, eddy current losses in different directions, and circulating losses between parallel conductors, as well as flow field cooling conditions. This enables the accurate calculation of coil temperature distribution and hotspot temperature rises, allowing us to take measures to effectively control hotspot temperature rises that impact transformer lifespan.

4. Reducing Local Discharge in Transformers

Electric field strengths at various locations have undergone numerical analysis during the design phase and have been strictly controlled. Additionally, compliance with manufacturing quality, the reliability of processing methods, and the reasonableness of operating techniques effectively control local discharges in transformers.

CEEG is a professional transformer manufacturer!