Company Profile
Zhejiang Jiangshan Hengli Electrical Co.,Ltd. (Brand name Henly) is a professional manufacturer of power distribution equipment.Hengli has been focusing on transformer manufacturing since 2003,our main products include oil immersed distribution transformer up to 5000 KVA 35KV, dry type transformer up to 10 MVA 35KV, power transformer up to 100 MVA 230KV,combined transformer substation, amorphous alloy transformer , rectifier transformer,furnace transformer and other special application transformers.
We have obtained ISO9001,ISO14001,ISO45001,CE certificates. All of our transformers' parts' manufacturing must put quality management system: ISO 9001 Into practice, and only those transformers that have successfully passed all the comprehensive tests will then go into practical application.
Our transformers comply with international standards and are widely used in power grids, industrial automation and infrastructure projects.We provide customized solutions for global clients, supporting flexible order quantities and strict quality control. We offer efficient logistics and professional service to ensure reliable delivery and after-sales support for overseas customers.If you are looking for a reliable supplier, feel free to contact us ,we aim to be your best partner in business! We have become one of the most reliable transformer manufacturers in China and our products have been sold well not only throughout China, but also exported to many overseas countries and regions.
Why Choose Us (Our Advantage)
Rich Experience
More than 20 years of experience in transformer production. Each of our key team members has over 10 years of experience meeting customers' critical transformer needs with high quality products and customized services.
Quality Assurance
Our company adheres to the concept of quality first and technology first.
✅ Qualified supplier of State Grid.
✅ Qualified National High-tech Enterprise.
✅ Efficient and reliable R&D capacity with dozens of patents.
✅ Qualified by ISO9001,ISO14001 and ISO45001.
Price Advantage
We are the manufacturers, we sell directly, and there is no price difference between the middlemen.
One-stop service
Professional team to provide you with efficient and friendly service.We provide one-package service from consulting, quoting, manufacturing, installation, commissioning, training to after sale services.
Our Services
We provide one-package service from consulting, quoting, manufacturing, installation, commissioning, training to after sale services.
Pre-Sales Support
- Professional model selection by experienced engineers
- 24/7 technical consultation (email, phone, online)
- Fast customization and design solutions
After-Sales Service
- 1-year warranty (extended options available)
- Dedicated customer support team
- Installation and maintenance guidance
- Rapid response for technical issues
Team Introduction
Hengli's team includes experienced engineers, production supervisors and after-sales experts experienced in transformer manufacturing. Our staff has rich practical experience in transformer component processing and finished transformer manufacturing to supply reliable products and standardized professional services.
Technical R&D Team
The R&D team specializes in transformer structural design, parameter optimization and new material application for distribution & power transformers. Composed of electrical and material engineering specialists, the team delivers customized design schemes and solves diverse personalized technical demands with solid R&D capacity.
Production & Manufacturing Team
Our Production and Manufacturing team is made up of experienced operators and skilled technicians, all with a strong commitment to quality control and exceptional machining expertise. They are experienced in winding, core processing and assembly, ensuring precise manufacture of dry-type & oil-immersed transformers.
Quality Inspection Team
Equipped with professional testing instruments, the QC team implements full-process inspection in line with national and international electrical standards. Every transformer passes multi-round performance testing before shipment.
After-Sales Service Team
All after-sales engineers receive systematic professional training with rich on-site service experience. We offer rapid response for installation guidance, fault troubleshooting and maintenance support throughout transformer operation.
Management Team
Experienced managers apply lean & digital management to optimize resource allocation and stable production operation.
Staff Training & Development
Regular technical training improves team competence to keep pace with evolving transformer market needs.
Quality Management Process
Each transformer undergoes strict testing procedures before delivery
Before Production
Professional Designing
Our technician teams provide the design according to the International Standards and market usage habit as well as your specific requirements if you require customization.
Raw Materials Inspection
We only use high quality raw materials and well-known brand accessories.
During Production
Full quality control
We have strict quality control as follows: raw material quality inspection - production quality inspection - production completion quality inspection. In addition, we also support video online quality inspection, third-party-inspection.
1 to 2 months lead time
With sufficient production capacity and advanced production management system we try our best to ensure that your order is completed in the shortest possible time.
After Production
After-sales service
Our after-sales service team is ready to provide you with technical support and consulting services. If you encounter any problems in the process of use, we will respond in the first time and provide you with solutions.
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23+Years of ExperienceFocus on transformer manufacturing
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24/7Technical ConsultationFast customization and design solutions
Production Line
The transformer production line ensures equipment performance through precise processes, with four core steps.
Iron core processing
Silicon steel sheets are cut by a slitting machine and then stacked at specific angles by a laminating machine to enhance magnetic permeability.
Winding production
Automatic winding machines are used to precisely wind copper wires onto insulating frames, with simultaneous inspection of wire diameter and number of turns.
Final assembly process
The iron core and windings are assembled, insulating oil is injected, and the oil tank is sealed to ensure insulation performance.
Testing
Multiple tests such as withstand voltage test and turns ratio test are conducted to achieve dual guarantees of efficiency and quality.
Maufacturing Equipment
- Vacuum casting system
- Cut-to-length line for core sheets
- Vacuum drying equipment
- Winding equipment
- Testing equipment
Product Application
Power grids, Industrial automation and infrastructure projects, Residential communities, Small industrial facilities, Commercial buildings, Rural power grids, Renewable energy systems
FAQ
Q: What key parameters need to be provided when selecting a transformer?
A: Three categories of core parameters are required: ① Electrical parameters (rated power, input/output voltage level, frequency); ② Environmental parameters (indoor/outdoor installation location, maximum/minimum temperature, presence of dust/humidity); ③ Functional requirements (whether special functions like lightning protection, noise reduction, and capacity regulation are needed). These parameters ensure the selection of a fully applicable product.
Q:What are your payment terms?
A: Accepted Payment Currency: USD, CNY
Accepted Payment Type: T/T, L/C, WeChat, etc.)
We accept any flexible and fast payment method.
Irrevocable letter of credit at sight.
Pay 30% in advance as deposit + 70% of the balance before shipment.
Q: Are you a manufacturer or a trading company?
A: We are a professional transformer manufacturer with more than 20 year's experience located in Zhejiang China.Support OEM&ODM.
Q: What is the scope of your supply?
A: We can supply distribution transformers up to 5000KVA 35KV, power transformers up to 200 MVA 230KV, dry type transformers up to 10 MVA 35KV, and other special transformers such as rectifier transformer ,furnace transformers,and box-type transformer.
Q: Can you do OEM and ODM?
A: Yes, OEM and ODM are both acceptable.
Q: How long is your delivery time?
A: Normally within one month since the date drawing approved by customer for distribution transformers below 5000kva, bigger transformers depend on the capacity and components, normally 30-90days .It depends on the quantity and capacity of the transformer.
Q: How long can I receive my transformers?
A: The shipping time from our port (shanghai or Ningbo) to your port is range from one week to one month, depend on the distance.
Q: How long does it take to get a quote?
A: After receiving the details, we will give you a quotation within 2 days.
Q: How can I place an order with you?
A: You can contact any of our sales staff at any time for quotation and further communication,with detailed technical specifications or SLD (single line diagram) or related drawings, etc provided by you. Email, WeChat, whatsapp, phone call etc all available.
Q: Does your transformer support customization?
A: We can provide customized transformer solutions based on our customers' specific needs and industry standards. Please contact our sales team for more details.
Q: Can I visit your company?
A: You are welcomed to visit our company at any time, contact us to get start the journey. If you need an invitation letter before coming to China, we can provide it to you.
Q: What package do you have for transformers?
A: Wooden pallets, wooden frames, wooden boxes,welded iron frame packed with ply wood boxes.Also it can be customized.
Q: What is your quality warranty period?
A: 12 months since the date transformer operated.During the warranty period, in the event of any failure due to materials or workmanship, we will be responsible for repair or replacement.
Q: When the transformer fails, how should we deal with it?
A: If your transformer fails, please stop using it immediately and contact our technical support team. We will advise you on troubleshooting and repair on a case-by-case basis.
Q: What standard do you follow?
A: IEC 60076 standard, and all other major international standard such as ANSI, GOST etc.
Q: How can you support us as a partner?
A: We will offer you the best price, complete customer service from quoting to operating,quick response 24/7.