About Xiamen Winley Electric Co.,Ltd

Xiamen Winley Electric Co.,Ltd Founded in 2014, Winley Electric is a professional transformer manufacturer certified by UL and cUL, with over a decade of experience in the power industry. Headquartered in Xiamen, China, the company has established manufacturing facilities in two core cities, Shanghai and Guangdong, respectively.​In terms of main products, Winley Electric is capable of producing various types of transformers with a voltage rating of 145KV and below.The products meet ANSI/IEEE/CSA/DOE2016/IEC60076 and other standards and have been exported to more than 60 countries around the world.The main product range includes three-phase pad-mounted transformers, single-phase pad-mounted transformers, substation transformers, pole-mounted transformers, epoxy resin cast dry-type transformers, vacuum impregnated transformers, isolation transformers, voltage regulators, and reactors.​Regarding R&D capabilities, the company has dozens of experienced senior engineers who are proficient in transformer standards of various countries, including ANSI, IEEE, CSA, DOE2016, NEMA, and IEC. They can customize cost-effective transformer solutions according to customers' specific requirements. The transformers produced by Winley Electric are renowned for their high quality, low loss, compact size, cost-effectiveness, and safety reliability. With decades of technical accumulation, Winley Electric has become a leading transformer export manufacturer in China, continuously leading the industry standards and having obtained more than 20 patents for independent R&D.​In terms of production capacity, Winley Electric has over 200 front-line employees. Among them, 80% have more than 3 years of work experience, and 50% have more than 5 years of work experience. The skill proficiency of employees is far higher than the industry average. In addition, the factories are equipped with advanced production equipment such as silicon steel sheet slitting lines/cross-cutting lines, multi-model foil winding machines/wire winding machines, vacuum constant-temperature drying ovens, two-stage vacuum oil filters, and automated welding equipment. Relying on solid hardware strength and a mature technical team, the company ensures the high-quality delivery of products within the agreed delivery period.​For quality assurance, the company has obtained multiple third-party testing and certifications including UL, cUL, ISO, CE, TUV, and EMC. It has established a scientific production management system in strict accordance with the requirements of ISO 9001. Meanwhile, it has set up a transformer material traceability system and a supplier evaluation mechanism to conduct refined quality control over all links in the entire production process. Besides, in addition to conventional testing equipment, the factories have also introduced professional type test equipment such as lightning impulse test devices. All products undergo strict factory inspection in accordance with standard specifications before leaving the factory. The company also provides a 2-year free maintenance service. With multiple guarantees, Winley Electric has built an excellent reputation of "zero quality problems" for its transformer products over the past decade.​In the global market, Winley Electric's products are exported to more than 60 countries and regions around the world, and have won high trust from customers in the North American market in particular. The products fully comply with international authoritative standards such as IEEE, ANSI, DOE, and CSA. At the same time, according to customers' actual needs, the company can open UL partner authorization and empower global customers to explore the market with flexible cooperation models.​In terms of customer service, Winley Electric provides 24/7 comprehensive technical support for customers. It offers customized solutions based on customers' actual needs, including product selection recommendation, drawing design, accessory selection, acceptance support, transportation plan, and installation guidance, so as to help customers reduce costs and improve efficiency with professional and efficient support.​Looking forward to the future, Winley Electric will continue to provide high-quality products and comprehensive services for all partners, and make efforts for the development of global green power.
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World-Class Team
Graduates from top universities worldwide
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Advanced R&D
Self-developed
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Innovation Focus
Multiple innovative technologies

Our Products

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Dry-type Transformer

Dry-type Transformer

Model: SG
Params: Capacity 10 kVA—30 MVA
Primary Vollage 4.76 kV, 15 kV , 23 kV, 34.5 kV or other
Secondary Voltage 208 V - 34.5 kV or other
Insulation Class B、F、H、C、R
Enclosure Type NEMA ratings, NEMA 1, NEMA 3R and NEMA 4
Frequency 50Hz、60Hz
cooling system AA/FA
Standards ANSI,IEEE, IEC,NEMA, DOE or regional standards
Certification UL/cUL、ISO、CE

Cast transformer

Cast transformer

Model: SCB
Params: Capacity 30-10000kVA
Primary Vollage 10-35KV
secondary Vollage 0.2-0.6kv or orther
Standard taps +/- 2.5%, +/- 5%
BIL Up to 250kV
Type of voltage regulation off-circuit or on-load
Connection symbol Dyn11 or Yyn0 (or as requested)
Cooling menthod AN or AF
Temperature rise Standard 80°C or 115° rise (others on request)
Enclosures Type 1, 3/3R, 4/4X or 12 available
Frequency 50Hz、60Hz
Standards IEC 60076, ANSI/IEEE C57

Substation Power Transformer

Substation Power Transformer

Model: S
Params: Capacity ranges from 150Kva to 100Mva
primary voltage range is usually 2.4KV-138KV
secondary voltage range is usually 0.6KV-35KV
Standards including NEMA, ANSI C.57, DOE, and IEEE as applicable

Pole Mounted Transformer

Pole Mounted Transformer

Model: DS
Params: Capacity:10 kVA -500 kVA。
Types:Conventional type、CSP type
Primary Voltage : 2400V, 7200V, 124 70V , 7620V, 13200V, 7957V, 13800V, 19920V, 34500V, 27600V or others
Secondary Voltage  :690Y/400,480Y/277, 208Y/120,240Y/120 or others
Standards: ANSI/IEEE C57、CSA C2.1、CSA C2.2、IEC 60076、AS 60076、ENA TS 35-1 or others

Pad Mounted Transformer

Pad Mounted Transformer

Model: DGS
Params: Rated capacity: 15-833KVA
Primary voltage: 34.5kV-19.92kV、24.94kV-14.4kV、13.8kV-7.957kV、13.2kV-7.62kV、12.47kV-7.2kV、 4160GrdY-2400V or others
Secondary voltage: 120-240V、240-480V、347/600V or others
Feed type: Loop feed,Radial feed
Standards: ANSI/IEEE(C57.12.00、C57.12.20、C57.12.38、C57.12.90)、CSA、DOE、NEMA

Pad Mounted Transformer

Pad Mounted Transformer

Model: ZGS
Params: Capacity :75 kVA—5500kVA
Primary Voltage : 34.5KV,24.94KV,13.8KV,13.2KV,12.47KV,4.16KV or others
Secondary Voltage  :690Y/400,480Y/277, 208Y/120,240Y/120 or others
Feed Type: Loop feed,Radial feed
Standards: IEEE/ANSI(C57.12.34 ), CSA(C227.4 和 C227.5), IEC, DOE, NEMA

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Certifications & Awards

CE
CE
ISO 45001
ISO 45001
ISO 24001
ISO 24001
ISO 9001
ISO 9001
cUL
cUL
UL
UL
cUL
cUL
UL
UL
cUL
cUL
UL
UL
cUL
cUL
UL
UL

Success Stories & Case Studies

Energy Enterprise

Energy Enterprise

1.Achieved ultra-fast delivery in 7 weeks, 5–9 weeks shorter than the industry average of 12–16 weeks, improving efficiency by over 40%.
2.Supplies about 10MW clean power to southern Honduras, alleviating power shortage and promoting energy transition.
3.Low loss, high reliability, long-term stable operation, reducing operation cost of the power station.
1.Customized voltage level specially for Honduras PV grid, perfectly adapting to local 60Hz grid connection requirements.
2.Low-loss and energy-saving design with high operating efficiency, greatly reducing long-term operation and maintenance costs of solar power plants.
3.Fast delivery within 7 weeks, much shorter than ordinary industry lead time, ensuring on-schedule grid connection and commissioning.
4.Outdoor weather-resistant structure adapts to local high-temperature climate with stable and reliable operation.
5.Manufactured in strict accordance with IEC international standards, with qualified quality to meet stringent requirements of new energy power stations.

📍 Location: HN 📦 Quantity: 2
Electricity Utility Company

Electricity Utility Company

Winley Electric successfully completed the production of 31 units of three-phase pad mounted transformers for a North American client, covering two core specifications: 2550kVA and 3750kVA, with high-voltage ratings of 34.5kV and 12.87kV. This batch production, completed efficiently within the agreed timeframe, fully demonstrates Winley Electric’s strong mass production capacity and high production efficiency—we can simultaneously handle the production of multiple specifications of transformers in large quantities, strictly control production cycles, and ensure on-time delivery without compromising quality. It is worth noting that Winley Electric’s entire series of three-phase pad mounted transformers have obtained UL and CUL certifications, fully complying with North American safety and quality standards. The entire production process of these 31 units was carried out in strict accordance with the client’s actual application scenarios and North American industry standards, solving the client’s key concerns in procurement and delivering a reliable power distribution solution that meets their on-site needs.
1.Rapid Large-Scale Deployment: Proven capability in high-volume fulfillment with the successful delivery of 31 units under an accelerated timeline, ensuring project milestones are met without delay.

2.Comprehensive UL/cUL Certification: Our entire product line is UL/cUL listed, guaranteeing full compliance with North American safety and quality standards for seamless grid integration.

3.Superior Energy Performance: Fully compliant with ANSI/IEEE standards, with core efficiency metrics that meet and frequently exceed DOE 2016 energy conservation requirements.

📍 Location: US 📦 Quantity: 31 units
Utility Company

Utility Company

Across North America, aging grid infrastructure, surging municipal power demand, renewable energy interconnection and regional load expansion have created severe supply shortages for large-capacity substation power transformers. Local North American manufacturers face extreme production backlogs, with lead times for 30–50 MVA liquid-filled substation transformers often extending beyond 100 weeks. These prolonged lead times cause widespread project delays, construction holdups and urgent equipment gaps for U.S. utility and grid upgrade clients.

To address these pain points for a U.S. utility client, Winley Electric delivered two 40 MVA conservator-type liquid-filled step-down substation power transformers, focusing on fast delivery, reliable performance, and tailored logistics support.​The entire in-house production and testing cycle was completed in 12 weeks, effectively solving the client’s urgent need to avoid project delays. ​
1. Unrivaled Lead Time: While the industry average exceeds 100 weeks, Winley Electric achieved full production and delivery in just 12 weeks.
2. Full ANSI/IEEE Compliance: Engineered to exceed rigorous North American standards, ensuring seamless grid integration and long-term reliability.
3.Customized Logistics Solutions: Specialized, project-specific transportation strategies designed to ensure the integrity of heavy-duty units upon arrival

📍 Location: US 📦 Quantity: 2
Electricity Utility Company

Electricity Utility Company

Only 7 weeks from order confirmation to container loading, demonstrating strong supply chain and production efficiency(including design confirmation, material preparation, manufacturing, vacuum oil filling, testing and packaging).Professional protective packaging, container loading documentation, and full technical support for installation and commissioning.
1.Canadian Grid Customization: 153 single-phase 60Hz pole-mounted transformers (15/25/50kVA), multi-voltage, 120/240V output for local multi-scenario use
2.North America Dual Certification: CSA C2.2:06 & UL/cUL certified, direct grid connection, US & Canada market accessible
3.7-Week Fast Delivery: Full process from order confirmation to loading completed in 7 weeks, strong supply chain capability

📍 Location: CA 📦 Quantity: 153

Company & Product Videos

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Customer Testimonials & Success Stories

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