66kV Power Transformer

• Junengda  66kV Power Transformer  Overview>>>

Junengda 66kV Power Transformers are engineered to deliver high-performance power transmission and distribution solutions for industrial, renewable energy, and grid applications. Designed with cutting-edge technology, these transformers ensure energy efficiency, safety, and durability in demanding environments.

• Junengda  66KV Power Transformer Technical Specifications>>>

66kV level,S(F)10,S(F)11-series three-phase double-winding non-excitation regulator power transformer main technical parameters

Rated power (KVA)	High Voltage (kV)	H.V.Tap range	Low Voltage (kV)	Connection symbol	Short- Circuit Impedance (%)	No-Load Loss (W)			On-Load Loss (W)			No-Load Current (%)	Weight (kg)
													Untankng Weight	Oil	Total
						Type9	Type10	Type11	Type9	Type10	Type11
6300	63 66 69	±2×2.5%	6.3 6.6 10.5 11	YNd11	9	9.5	8.5	7.5	37	34	34	0.63	17.5	5.4	18.4
8000						11.4	1.2	9	45	40.4	40.4	0.63	20	5.9	20.8
10000						13.5	12.1	12.1	53	47.6	47.6	0.75	22.5	6.9	23.2
12500						15.9	14.2	12.6	63	56.6	56.6	0.53	26.5	7.7	26.5
16000						19.1	17.1	15.1	77	69.5	69.5	0.49	28.6	8.5	28.7
20000						22.6	20.3	17.9	93	84.2	84.2	0.49	33.2	9.5	31.9
25000						26.7	23.9	21.1	110	99.5	99.5	0.42	35.2	9.8	35
31500						31.8	28.4	25.1	133	120	120	0.42	40.2	11.3	46.5
40000						38	34	30	156	140.3	140.3	0.39	45.7	13.1	54.2
50000						44.9	40.1	35.4	194	174.3	174.3	0.39	53.4	14.3	63
63000						53.3	47.7	42.1	234	210	210	0.39	60.3	15.9	69.2

 

66kV level,S(F)Z10,S(F)Z11-series three-phase load tap oil-immersed power transformer main technical parameters

Rated power (kVA)	High Voltage (kV)	H.V.Tap range	Low Voltage (kV)	Connection symbol	Short- Circuit Impedance (%)	No-Load Loss (W)			On-Load Loss (W)			No-Load Current (%)	Weight (kg)
													Untankng Weight	Oil	Total
						Type9	Type10	Type11	Type9	Type10	Type11
6300	63 66 69	±8× 1.25%	6.3 6.6 10.5 11	YNd11	9	10.5	9.4	8.25	36	34	34	0.63	19.3	7.1	21.4
8000						12.5	11.5	9.83	42.8	40.4	40.4	0.63	22	7.6	24.1
10000						14.7	13.1	11.6	50.4	47.6	47.6	0.75	24.8	8.7	26.7
12500						17.2	15.4	13.6	59.9	56.6	56.6	0.53	29.2	9.5	30.3
16000						20.6	18.5	16.3	73.53	69.5	69.5	0.49	31.5	1.04	32.7
20000						24.3	21.8	19.2	89.1	84.2	84.2	0.49	36.5	11.6	36.2
25000						28.6	25.6	22.6	105.3	99.5	99.5	0.42	38.8	11.9	39.6
31500						33.9	30.4	26.58	126.9	120	120	0.42	44.3	13.5	52.3
40000						40.4	36.2	31.9	148.5	140.3	140.3	0.39	50.3	15.3	60.8
50000						47.8	42.6	38.6	184.5	174.3	174.3	0.39	58.5	16.9	71
63000						56.3	50.4	44.4	222.3	210	210	0.39	66.4	18.6	77.2

 

• Junengda  66KV Power Transformer Features>>>

International Certifications & Standards Compliance

Junengda 66kV Power Transformer meets IEC 60076 and GB 50061-97 standards, ensuring global reliability and safety. It is certified for short-circuit withstand capability (IEC 60076-5) and eco-friendly operation, aligning with EU and North American regulations.

Advanced Structural Design

Built with high-grade grain-oriented silicon steel cores and dry-type insulation, this transformer minimizes no-load losses by 15–20% compared to conventional models. Its robust, corrosion-resistant enclosure ensures durability in harsh environments.

Optimal for Renewable Energy Integration

Ideal for wind farms, solar parks, and grid substations, the 66kV transformer enhances energy transmission efficiency. It supports high-capacity systems, reducing line losses by 762 kWh hourly in renewable projects.

Global Applications & Markets

Widely adopted in Germany, the U.S., India, and Southeast Asia, Junengda transformers excel in urban grids, industrial zones, and remote power networks. Their modular design adapts to diverse voltage requirements.

Eco-Friendly & Low Maintenance

Featuring non-flammable, oil-free insulation, this transformer eliminates pollution risks and reduces fire hazards. Its maintenance-free design cuts operational costs by 30%, perfect for sustainable infrastructure.

Smart Grid Compatibility

Engineered for seamless integration with smart grids, Junengda 66kV transformers enhance grid stability and support real-time monitoring systems, ensuring reliable power delivery in dynamic energy markets.

• Junengda  66KV Power Transformer  Advantage>>>

Enhanced Safety & Fire Resistance

Junengda transformers utilize advanced ester oil insulation, renowned for its high fire point (>300°C) and non-flammable properties, significantly reducing explosion risks and ensuring compliance with stringent safety standards like IEC 61100. This makes them ideal for densely populated areas or sensitive industrial zones.

Uncompromising Stability & Durability

Built to withstand harsh environments, Junengda’s compact, corrosion-resistant design ensures stable performance in extreme conditions, including offshore wind farms and high-vibration industrial sites. The robust construction minimizes mechanical stress during short circuits, extending operational lifespan.

Low Maintenance & Cost Efficiency

With self-degrading ester oil and reduced cooling requirements, maintenance intervals are extended, lowering lifecycle costs. The lightweight, space-saving design further reduces installation and upkeep expenses, offering a cost-effective solution for utilities and enterprises.

Superior Space Utilization

Junengda’s compact architecture optimizes space efficiency, enabling seamless integration into constrained environments such as urban substations or offshore platforms. This innovation supports flexible grid expansion without compromising performance.

Eco-Friendly & Energy-Efficient

Featuring 100% biodegradable ester oil and near-zero carbon emissions, Junengda transformers align with global sustainability goals. Their high-voltage efficiency reduces line losses by up to 0.19%, enhancing energy transmission while cutting CO₂ emissions by thousands of tons annually.

Future-Ready Energy Solutions

As grids transition to renewable energy, Junengda 66kV Power Transformers provide critical support for wind, solar, and microgrid projects, ensuring reliable power delivery with minimal environmental footprint. Trust Junengda to power your sustainable energy future.

 

Why Choose Junengda  66kV Power Transformer?

Junengda’s 66kV transformer adheres to IEC and IEEE standards, delivering eco-friendly performance and compliance with international certifications. Trusted for cost-effective, zero-failure operation, Junengda empowers your grid with cutting-edge technology and unmatched after-sales support.

 

• Junengda  66kV Power Transformer  Case>>>

1.Rural Electrification in Vietnam

Junengda 66kV power transformers have been deployed in rural Vietnam to enhance grid stability in remote areas. These transformers efficiently step down 66kV to distribution levels, ensuring reliable electricity for agricultural and residential use. Junengda’s robust design withstands high humidity and temperature fluctuations, making it ideal for Southeast Asia’s climate.

2.Industrial Zone in India

A major industrial park in Gujarat, India, utilizes Junengda 66kV power transformers to support heavy machinery and manufacturing units. The transformers’ high efficiency and low maintenance reduce downtime, ensuring uninterrupted power for factories. Junengda’s expertise in high-voltage solutions makes it a trusted choice for industrial applications.

3.Wind Farm in Inner Mongolia, China

Junengda 66kV transformers play a key role in a wind energy project in Inner Mongolia, transmitting clean power to the grid. Their ability to handle variable loads from wind turbines ensures stable energy output. Junengda’s transformers are built for harsh environments, delivering long-term reliability in renewable energy projects.

4.Mining Operation in South Africa

A mining company in South Africa relies on Junengda 66kV power transformers to electrify its operations. The transformers provide consistent high-voltage power for heavy-duty equipment, even in dusty and high-temperature conditions. Junengda’s durable design minimizes energy loss, optimizing performance for critical mining applications.

 

• Junengda  66kV Power Transformer  FAQ>>>

Q1: What are the primary applications of Junengda’s 66kV Power Transformer?

Junengda’s 66kV Power Transformer is designed for renewable energy systems, particularly wind farms and solar projects. It efficiently steps up voltage to 66kV, reducing transmission losses and optimizing energy delivery to grids. Ideal for offshore/onshore wind turbines and large-scale photovoltaic plants, it supports high-capacity power transfer over long distances.

Q2: What makes Junengda’s 66kV transformer stand out in terms of technology?

Our transformer features a dry-type design, eliminating flammable oils and enhancing safety in sensitive environments like indoor facilities or offshore installations. With advanced cooling systems and high-grade insulation materials, it ensures minimal maintenance, lower lifecycle costs, and superior resistance to harsh conditions such as humidity and corrosion.

Q3: How does the 66kV voltage level improve energy efficiency?

By operating at 66kV, Junengda’s transformer reduces current levels during power transmission, significantly cutting down resistive losses (P = I²R). This aligns with global standards for high-efficiency energy systems, making it a sustainable choice for wind and solar farms aiming to maximize output and minimize operational costs.

Q4: Is Junengda’s 66kV Power Transformer suitable for harsh environments?

Yes. Built with robust, corrosion-resistant materials and a compact structure, our transformer excels in challenging settings like offshore wind farms or high-altitude solar plants. Its dry-type design prevents oil leaks, ensuring compliance with strict environmental regulations.

Q5: Can the transformer be customized for specific project needs?

Junengda offers tailored solutions, including adjustable voltage regulation, modular cooling systems, and compact designs for space-constrained installations. Custom kVA ratings and frequency compatibility (50Hz/60Hz) are available to meet regional grid requirements.

Q6: What maintenance is required for Junengda’s 66kV transformers?

The dry-type design requires minimal maintenance compared to oil-filled alternatives. Regular inspections for dust accumulation and thermal performance checks are recommended. Our transformers are engineered for long-term reliability, reducing downtime and operational disruptions.

Q7: How does Junengda ensure compliance with international safety standards?

All 66kV transformers undergo rigorous testing for fire resistance, seismic stability, and harmonic distortion mitigation. They meet IEC and IEEE standards, ensuring safe integration into global power networks while prioritizing operator and environmental safety.

Q8: Why choose Junengda over traditional oil-immersed transformers?

Junengda’s dry-type 66kV transformers eliminate fire risks associated with oil, reduce maintenance costs, and offer eco-friendly operation. Their higher voltage capacity and compact footprint make them ideal for modern renewable energy projects demanding efficiency and sustainability.