6.6KV Fully Sealed Three-phase Oil-immersed Power Plant Distribution Transformer

HENAN GNEE ELECTRIC CO., LTD. is a professional manufacturing corporation to produce 10kv to 35kv solar step up power transformer and solar compact substation, such as 33 6.6 Kv Step Up Power Transformer 1000 Kva.

 

Against the backdrop of global electricity demand growth, 6.6kV three-phase oil immersed transformers are widely used in rural power grids, industry, commerce, new energy, public facilities, and other fields. High reliability operational verification in over 50 countries and regions worldwide; Already sold to countries and regions such as Tanzania, Zimbabwe, Ghana, South Africa, Kenya, Zambia, Sudan, Egypt, Congo, United Arab Emirates, Saudi Arabia, Saudi Arabia, Egypt, Bangladesh, etc

 

In the dynamic landscape of power distribution, the 6.6kV oil immersed three phase high voltage transformers stands as a crucial component, ensuring seamless and reliable energy transfer. As industries continue to expand and energy demands soar, the role of a proficient 6.6kV Oil Immersed Three Phase High Voltage Transformer manufacturer becomes increasingly indispensable.

 

6.6kv Oil immersed Transformer Type

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For HENAN GNEE ELECTRIC CO., LTD., a 6.6kv transformer can be a three-phase oil immersed transformer, a column mounted three-phase oil immersed transformer, or a three-phase pad mounted transformer. These types of transformers have the same principle, but their structures are different, and different types of transformers have different applications. HENAN GNEE ELECTRIC CO., LTD. provides you with the most ideal solution.

6.6kV three-phase oil immersed transformer (rated voltage 6kV-35kV)

Install a three-phase oil immersed transformer (rated voltage 2.4kv-34.5kv) on an 6.6kV column

6.6kV three-phase pad mounted transformer (rated voltage 2.4kv-34.5kv)

6.6kv Oil immersed Transformer Technical Specifications

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- Input voltage: 11KV/6.6kv 33Kv/6.6kv
- Output voltage: 6.6KV
- Capacity: 50-5000 KVA
- Frequency: 50HZ/60HZ
- Remark: voltage, capacity, frequency, connection group and loss can be customized according to customer requirements

 

6.6kv Oil Immersed Three Phase High Voltage Transformers

Phase	Three-phase
Brand	Lihe
Country of origin	China
Capacity	50kva-4000kva
Voltage	10kV- 35kV
Frequency	50/ 60Hz
Winding Material	Aluminum / Copper

 

S11-M series 6.6kV oil-immersed high voltage transformer
Rated Capacity (kVA)	Voltage combinations		Connection Method	No-load loss (W)	Load loss (W)	No-load current (%)	Short-circuit impedance
	HV(kV)	LV(kV)
50	6.6 33 35 38.5	0.4	Dyn11 or Yyn0	265	1350	2.8	6.5
100				370	2250	2.8
125				420	2650	2.5
160				470	3150	2.4
200				550	3700	2.2
250				640	4400	2
315				760	5300	2
400				920	6400	1.9
500				1080	7700	1.8
630				1300	9200	1.8
800				1540	11000	1.5
1000				1800	13500	1.4
1250				2200	16300	1.2
1600				2650	19500	1.1
2000				3400	19800	1.1
2500				4000	23000	1.1
3150				4750	27000	1	7
4000				5650	32000	1

 

6.6kv Oil immersed Transformer Standar & Certifaication

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1. Standards: GB, IEC, GOST, EN, NF, ANSI/IEEE (customizable according to customer standards)

2. Certification: ISO,CE,IEC,SABS,COC,CSA,UL

3. Efficiency: The efficiency of an 6.6kV three-phase oil immersed transformer can exceed 99%, which can meet the European 2015/2014/548/EC ecodesign Tier 2 energy efficiency regulations.

4. Maintenance free: IP65 protection level, dustproof and moisture-proof, maintenance free, designed for a lifespan of over 25 years.

5. Environmental protection and sustainable development: FR3 vegetable oil can be selected.

6. Overload capacity: Copper coil 6.6kv transformer allows short-term overload to 150% of rated capacity for no more than 2 hours, but requires monitoring of oil temperature (≤ 95 ℃).

 

Applications of 6.6kV Oil – Immersed Three – Phase High – Voltage Transformers

These transformers have a wide range of applications. In rural power grids, they are essential for efficiently distributing power over long distances. The 6.6kV voltage level is suitable for providing electricity to remote areas, ensuring that even the most isolated communities have access to reliable power.

 

In the industrial sector, especially in industries such as mining and petrochemicals, 6.6kV oil-immersed transformers are widely used. Mines often require a large amount of power to operate heavy-duty equipment such as excavators, crushers, and conveyor belts. The robust design of these transformers allows them to handle the high-load demands of industrial operations. Petrochemical plants also rely on 6.6kV transformers to power their complex processes, from refining crude oil to producing various chemical products.

 

Commercial areas, including shopping malls, office buildings, and hotels, also benefit from 6.6kV oil-immersed transformers. These transformers ensure a stable power supply for lighting, air – conditioning systems, and other electrical appliances, providing a comfortable and convenient environment for customers and employees.

 

In the field of new energy, such as solar and wind farms, 6.6kV transformers are used to step up the voltage generated by renewable energy sources for efficient transmission to the grid. They help integrate clean energy into the existing power infrastructure, contributing to a more sustainable energy future.

 

Advantages of Our 6.6kV Oil – Immersed Three – Phase High – Voltage Transformers

High Efficiency

Our 6.6kV oil-immersed transformers are designed with high efficiency in mind. The efficiency of these transformers can exceed 99%, which not only helps in reducing energy losses but also meets the strict European 2015 / 2014 / 548 / ec ecodesign tier 2 energy efficiency regulations. This high-efficiency performance is achieved through the use of advanced materials and precise manufacturing techniques. For example, the core of the transformer is made of high – quality grain – oriented silicon steel, which has low magnetic reluctance, reducing the core losses. The windings are carefully designed and wound with high – high-conductivity copper wires to minimize the resistive losses.

 

Maintenance – Free Design

With an IP65 protection level, our transformers are dustproof and moisture-proof, making them virtually maintenance-free. The sealed tank design prevents the ingress of dust and moisture, which are common causes of transformer failures. This not only reduces the operational costs associated with regular maintenance but also increases the reliability and lifespan of the transformer. Our transformers are designed to have a lifespan of over 25 years, providing long-term value for our customers.

 

Environmental Protection and Sustainable Development

We offer the option of using FR3 vegetable oil in our 6.6kV oil-immersed transformers. FR3 vegetable oil is a biodegradable and environmentally friendly alternative to traditional mineral oil. It has a lower impact on the environment in case of any leakage, making it a more sustainable choice. This option is especially appealing to customers who are committed to reducing their environmental footprint and operating in an eco-friendly manner.

 

Overload Capacity

Our copper-coil 6.6kV transformers are designed to handle short-term overloads. They can withstand up to 150% of the rated capacity for no more than 2 hours, provided that the oil temperature is monitored and kept below 95℃. This overload capacity is crucial in situations where there are sudden spikes in power demand, such as during the start-up of large industrial motors or in case of emergency power requirements.

 

Technical Specifications

Input Voltage: We offer transformers with input voltage options such as 11 kV / 6.6 kV and 33 kV / 6.6 kV, providing flexibility to meet different power grid requirements.

Output Voltage: The output voltage is set at 6.6kV, which is suitable for a wide range of applications as mentioned above.

Capacity: Our transformers are available in a capacity range from 50 – 5000 kVA. This wide capacity range allows customers to choose the transformer that best suits their power load requirements, whether it is a small-scale commercial establishment or a large-scale industrial plant.

Frequency: We can manufacture transformers to operate at frequencies of 50 Hz or 60 Hz, catering to different regions and applications around the world.

 

Quality Certifications

As a leading manufacturer, we adhere to the highest quality standards. Our 6.6kV oil – immersed three – phase high – voltage transformers are certified with ISO, CE, IEC, SA BS, CoC, CSA, and UL. These certifications are a testament to the quality, safety, and reliability of our products. They ensure that our transformers meet international standards and can be used in various markets around the world with confidence.

 

In conclusion, if you are looking for a reliable 6.6kV Oil Immersed Three Phase High Voltage Transformer manufacturer, look no further. Our products offer high efficiency, low maintenance, environmental friendliness, and excellent performance. Contact us today to discuss your specific requirements and let us provide you with the perfect 6.6kV transformer solution for your power distribution needs.

 

By choosing our 6.6kV oil-immersed three-phase high-voltage transformers, you are not only getting a high-quality product but also a partner committed to your success in power distribution. Whether it is for a new project or an upgrade of an existing power system, our transformers will ensure a stable and efficient power supply for years to come.

 

If you have any questions regarding the applications, advantages, or technical details of our 6.6kV oil – immersed three – phase high – voltage transformers, feel free to reach out. Our team of experts is always ready to assist you in making the best choice for your power needs.

 

We have successfully supplied our 6.6kV oil – immersed three – phase high – voltage transformers to over 50 countries and regions worldwide, including Tanzania, Zimbabwe, Ghana, South Africa, Kenya, Zambia, Sudan, Egypt, Congo, United Arab Emirates, Saudi Arabia, Saudi Arabia, Egypt, Bangladesh, and many more. Our global presence is a result of our commitment to quality and customer satisfaction.

 

So, don't compromise on the quality of your power distribution system. Choose our 6.6kV Oil Immersed Three Phase High Voltage Transformers and experience the difference in performance, reliability, and efficiency.

 

Contact us now to get started on optimizing your power infrastructure with our top – of – the – line 6.6kV transformers.

 

I hope this article effectively showcases the key aspects of oil – immersed three – phase high – voltage transformers and our manufacturing capabilities. If you have any specific details you'd like to add, like more in-depth technical specs or real-world customer success stories, please let me know.

 

30-2500KVA 6-11KV Oil-immersed transformer
Rated Capacity (kVA)	Voltage Combination			Vector Group	No-Load Loss(w)	Load Loss	No-Load Current (%)	Short Circuit Impedance (%)
	High Voltage(kV)	Tapping Range	Low Voltage (kV)
30	11 10.5 10 6.3 6	±5% ±2×2.5%	0.4	Dyn 11 or Yyn0	130	630	2.1	4
50					170	910	2.0
63					200	1090	1.9
80					250	1310	1.8
100					290	1580	1.6
125					340	1890	1.5
160					400	2310	1.4
200					480	2730	1.3
250					560	3200	1.2
315					670	3830	1.1
400					800	4520	1.0
500					960	5410	1.0
630					1200	6200	0.9	4.5
800					1400	7500	0.8
1000					1700	10300	0.7
1250					1950	12000	0.6
1600					2400	14500	0.6
2000					2850	19500	0.6	5
2500					3000	21200	0.6	5

 

S20 Oil-immersed Distribution Transformer Energy Efficiency Class
Number	Rated Capacity	Voltage Combination			No-Load Loss	Load Loss (Dyn11/Yzn11))	Load Loss (Yyno)	No-load Current (%)	Impedance
		High Voltage(kV)	Tapping Range	Low Voltage (kV)
1	30	11 10.5 10 6.6 6	±5% ±2×2.5%	0.4	70	505	480	0.50	4.0
2	50				90	730	695	0.50
3	63				100	870	830	0.50
4	80				115	1050	1000	0.50
5	100				135	1265	1200	0.45
6	125				150	1510	1440	0.45
7	160				180	1850	1760	0.40
8	200				215	2185	2080	0.40
9	250				260	2560	2440	0.40
10	315				305	3065	2920	0.35
11	400				370	3615	3440	0.35
12	500				430	4330	4120	0.30
13	630				510	4960		0.25	4.5
14	800				630	6000		0.18
15	1000				745	8240		0.17
16	1250				870	9600		0.17
17	1600				1050	11600
18	2000				1225	14640			5.0
19	2500				1440	14840

 

S22 Oil-immersed Distribution Transformer Energy Efficiency Class
Number	Rated Capacity	Voltage Combination			No-Load Loss	Load Loss (Dyn11/Yzn11))	Load Loss (Yyno)	No-load Current (%)	Impedance
		High Voltage(kV)	Tapping Range	Low Voltage (kV)
1	30	11 10.5 10 6.6 6	±5% ±2×2.5%	0.4	65	455	430	0.50	4.0
2	50				80	655	625	0.50
3	63				90	785	745	0.50
4	80				105	945	900	0.50
5	100				120	1140	1080	0.45
6	125				135	1360	1295	0.45
7	160				160	1665	1585	0.40
8	200				190	1970	1870	0.40
9	250				230	2300	2195	0.40
10	315				270	2760	2630	0.35
11	400				330	3250	3095	0.35
12	500				385	3900	3710	0.30
13	630				460	4460		0.25	4.5
14	800				560	5400		0.18
15	1000				665	7415		0.17
16	1250				780	8640		0.17
17	1600				940	10440
18	2000				1085	13180			5.0
19	2500				1280	13360