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AC/DC surge protection device
Anhui Jinli Electric Tech. Co., Ltd, a professional manufacturer of surge protection device, has AC SPD and DC SPD, with CE, RoHs, TUV, UL certificates.  And we keep offering SPDs to Sungrow, Goodwe, Growatt, Hopewind, Solax Power, INVT, and also work with Huawei on some projects. AC SPD e is used in AC power supply system (50/60Hz), such as TT, TN, IT, power supply system of network communication equipment (WIFI, 4G and 5G), and factory low-voltage power  control system to protect from lightning striker and transient over-voltage. Uc of Jinli AC SPD:175V, 275V, 320V, 350V, 385V, 440V, 485V and 750V. DC SPD is used in all kinds of DC power system, such as broadcasting systems, communication systems, security monitoring systems, fire control systems, industrial control systems, and various other DC power equipment with DC voltage of 24V, 48V, 110V, 220V etc. Uc of Jinli DC SPD is: 85V, 225V, 350V.
AC surge protection device
Jinli AC surge protective device is used in AC power supply system (50/60Hz), such as TT, TN, IT, power supply system of network communication equipment (WIFI, 4G and 5G), and factory low-voltage power  control system to protect from lightning striker and transient over-voltage. Uc of Jinli AC SPD: 175V, 275V, 350V, 385V, 440V, 485V and 750V, including type 1+2 ac spd, type 2 ac spd. For type 1+2 SPD, we have Iimp=15kA, Iimp=25kA, Iimp=12.5kA. For type 2 spd, we have In=10kA, In-=20kA, In=40kA, In=60kA
DC surge protection device
DC surge protective device is used in all kinds of DC power system, such as broadcasting systems, communication systems, security monitoring systems, fire control systems, industrial control systems, and various other DC power equipment with DC voltage of 24V, 48V, 110V, 220V etc.  Uc of Jinli DC SPDs is: 85V, 225V, 350V
Solar surge protection device
Photovoltaic surge protection device is avalibale for 600V, 800V, 1000V and 1500V dc power system of phototvoltaic power generation equipment in DC side, DC combiner box, inverter in DC side, etc. 
Signal surge protection device
Signal surge protection device is used in weak current control systems (industrail control systems, telecommunication systems, fire alarm systems, security monitoring systems etc.) To ensure the telecom or data equipment sufficiently reliable, the signal sugre protection device must be installed to protect data equipment from transient overvoltage. 
Type 1 AC SPD
  Jinli type 1+2 ac spd, has Iimp=15kA, Iimp=25kA, Iimp=12.5kA, from Uc=385V, Uc=680V, Uc=750V.   For JLSP-BC680/12.5/3P+1/Y, Uc=680V, to 3P+1 model, Uc=680V+680V=1360V, as series connection can increase voltage, which we offer to Huawei, and intalled in 800V transformer box. And it is widely sold to Italy, Spain, Portugal,Panama, Brazil, etc.
PCB type surge protection device
  PCB type surge protection device is voltage-limiting type SPD and mainly used to prevent surge overvoltage in AC/DC power supply circuite, which equipped with safety disconnection device and status indicator. Normally, the indicator window is green, and will turn to red under malfunction and generate remote alarm signaling.  We offer PCB SPDs to Sungrow, Goodwe, Growatt, Shenzhen INVT, Zhejiang Solax Power, Hopewind, Sineng etc, which widely soldered on their inverter, such as GTSP-MDV670/20/A, GTSP-MAV385/20/A, GTSP-PVD900-20S0, GTSP-PVD670-20S0......
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Through the nationwide sales and technical service network, we provide users with fast and personal services and create a safe and worry-free power environment.

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Through the nationwide sales and technical service network, we provide users with fast and personal services and create a safe and worry-free power environment.

dc spd 1000v
Jinli PV surge protection device solar DC SPD 1000V
Type 2 surge protector 1000V SPD In:20kA Imax: 40kA Low voltage Up Internal disconnection, statue indicator, and remote signaling IEC 61643-11 CE certificate
dc spd 600v
Jinli 2 poles solar surge protection device DC SPD 500V 600V
Type 2 surge protector 600v SPD In:20kA Imax: 40kA Low voltage Up Internal disconnection, statue indicator, and remote signaling IEC 61643-11
dc spd
Single phase power surge protection device DC SPD 220v
Type 2 DC surge protector In:20kA Imax: 40kA Low voltage Up Internal disconnection, statue indicator, and remote signaling IEC 61643-11
600v dc spd
Type 2 single phase surge protection device dc SPD 600V
Type 2 surge protector 600v SPD, single phase surge protection device In:20kA; Imax: 40kA Low voltage Up Internal disconnection, statue indicator, and remote signaling IEC 61643-11 OEM acceptable SPD factory, professional manufacturer
ac surge protective device
Type 2 three phase ac surge protection device power SPD 175V
Type 2 surge protector, Uc=175V, 4poles ac spd, surge protector 40ka In:20kA Imax: 40kA Low voltage Up Internal disconnection, statue indicator, and remote signaling IEC 61643-11
dc power supply spd
Jinli type 2 surge protection device 24V 48V 2poles DC SPD
Type 2 DC surge protector In:20kA; Imax: 40kA Low voltage Up Internal disconnection, statue indicator, and remote signaling IEC 61643-11 OEM & ODM SPD factory, professional manufacturer
type 2 dc spd
Single phase type 2 power surge protector dc spd 350V
Type 2 DC 350V surge protector In:20kA Imax: 40kA Low voltage Up Internal disconnection, statue indicator, and remote signaling IEC 61643-11
spd dc 20ka
Jinli small size dc spd 20kA surge protector
Type 2 DC surge protector, 670V dc surge protector In:10kA, Imax: 20kA Low voltage Up Internal disconnection, statue indicator, and remote signaling IEC 61643-11 OEM/ODM SPD manufacturer Sungrow, Goodwe, Growatt supplier, work with Huawei
dc spd 1000V
Jinli Type 2 DC surge protector 3poles SPD 1000V
Type 2 surge protector 1000V SPD, DC SPD 3 pole In:20kA; Imax: 40kA Low voltage Up Internal disconnection, statue indicator, and remote signaling IEC 61643-11 CE, UL certificate SPD factory, professional OEM manufacturer
dc surge protection device
Jinli type 2 dc surge arrester SPD 2 pole 1000V
Type 2 DC SPD 2 Pole, dc 1000V 2 pole In:20kA  Imax: 40kA Low voltage Up Internal disconnection, statue indicator, and remote signaling IEC 61643-11 OEM acceptable SPD factory, professional manufacturer
About Us
Anhui Jinli Electric Tech. Co., Ltd
  Anhui Jinli Electric Tech. Co., Ltd (hereinafter refered to as Jinli), located in High-tech industrial development zone, Hefei, Anhui province, is a national high-tech enterprise and one of the best innovation enterprises in Chinese lightning protection industry, with 56000 sq.m. for R&D, production and office, including 3800 sq.m. for laboratory.    Anhui JINLI Electric Tech. CO., LTD is always professionally dedicated to SPD production and owns 3 laboratories, which have the full test capabilities compliance with national and international standards such as IEC61643, UL1449. The labs have been assessed and found eligible to participate in UL witness data program, as well as testing at manufacturer’s premises laboratory approval by TüV Rheinland Group.  The surge protectors all pass the CE and Rosh certificates, and parts of them obtain UL certificate.   * 2006/3 The birth of Anhui Golden Power Electronic Co., Ltd   * 2008/9 Surge protective devices were 1st used in Luanda railway project in Angola   * 2009/6 1st manufacturer to offer SPDs in 2*300MW cogeneration project   * 2009/11 Achieved the National Hi-tech enterprise certification   * 2011/5 Renamed to Anhui Jinli Electric Tech. Co., Ltd   * 2012/8 Participated in formulating China lightning protection GB/T 21714   * 2012/11 Build the largest enterprise-class test center and MOV materail laboratory in east China   * 2014/4 Passed TUV approval for solar SPD   * 2014/11 Awarded the best innovative enterprise in lightning protection industry   * 2015/3 "Special intelligent power saving cabinet for PV SPD" came to the market   * 2016/4 Released new products of solar surge protection device   * 2016/8 Obtained RoHS certificate   * 2017/8 Obtained CE certificate and Thayer certificate of DOC   * 2018/7 Obtained the eligibility to participate in UL witness test data program   * 2018/7 Changed to new logo    * 2018/8 Laboratory approval by TUV Rheinland Group   * 2019/3 Released Second generation PCB SPD and T1+T2 PCB SPD   * 2020/5 Released intelligent lightning protection products   * 2021/10 Hold the first special seminar on lightning protection technology   * 2022/4 Upgraded product lines and manuals Baed on the concept of "Adering to original", Jinli is committed to power system security and focused on the over-voltage oritection  of electrical system. With technial service network, we can provide fast and professional service for users and creat a safe and worry-free electricity environment. 
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2008
Established
56000
Factory area(㎡)
30+
Patent
20+
Research Team
Latest News

Through the nationwide sales and technical service network, we provide users with fast and personal services and create a safe and worry-free power environment.

Application of DC surge arresters in rail transit: A core barrier protecting the safety of DC systems
21/ November 2025
Application of DC surge arresters in rail transit: A core barrier protecting the safety of DC systems
In the rail transit sector, the DC power supply system is the "energy hub" ensuring stable train operation. Whether it's a subway, light rail, or urban express rail, key components such as traction power supply, DC traction network, and regenerative braking circuit all rely on the reliable operation of the DC system. However, DC systems are susceptible to various overvoltage threats in actual operation, such as switching operation overvoltage, regenerative braking overvoltage, and lightning strike overvoltage. If these overvoltages are not suppressed in time, they can lead to equipment damage or, in severe cases, power outages and train stoppages. As a targeted overvoltage protection device, the DC surge arrester for rail transit, with its precise voltage limiting capability and rapid response characteristics, has become a core barrier protecting the safety of the DC system. Reasons for using DC power supply in rail transit Urban rail transit (metro, light rail, etc.) generally uses DC 750V or 1500V power supply, which is related to its short station spacing, frequent starts and stops, and limited line length. DC traction systems have advantages such as good speed regulation performance, large starting torque, and relatively simple control. At the same time, because of its relatively low power supply voltage and the inductive and loss-free transmission of DC power, it has high efficiency in short-distance transmission. In addition, its mature technology and low overall construction cost make it the mainstream choice for urban rail transit Installation location and reasons for DC surge arresters in subways The 1500V DC system for subways is not a single device, but a closed-loop system composed of four major components: high-voltage AC input, rectification and conversion, DC power distribution, and train current collection. In the subway system, the 1500V DC surge arrester is a key device for overvoltage protection. It is mainly installed inside the DC traction substation and at key nodes of the contact network (or contact rail) along the line, such as the end of the power supply section, the contact network entry point in the station yard, and the ground and elevated sections, to protect the rectifier units, DC switchgear, control and measurement devices, and the contact network itself.   Although some sections of the subway are underground, the overhead contact lines in both the ground and elevated sections, being unshielded outdoor installations, are still vulnerable to lightning overvoltage threats: 1. Outdoor contact lines are susceptible to direct lightning strikes due to their exposed location, potentially injecting extremely large lightning currents; 2. Proximity lightning strikes can also induce high-amplitude pulse overvoltages in the contact lines; 3. Operational overvoltages generated within the system due to frequent train starts and stops, circuit breaker operations, and regenerative braking are also significant. DC surge a...
  • Gathering Momentum for a New Future in Rail Transit! The 22nd Annual Summit of the World Rail Transit Industry
    06/ November 2025
    Gathering Momentum for a New Future in Rail Transit! The 22nd Annual Summit of the World Rail Transit Industry
    Gathering Momentum for a New Future in Rail Transit! The 22nd Annual Summit of the World Rail Transit Industry From 30th to 31st in Oct., 2025, the 22nd Anniversary Summit of the World Rail Transitwas held in Beijing. This grand event, bringing together industry authorities, cutting-edge technologies, and strategic wisdom, focused on the core theme of "Strategic Transformation to Promote the Sustainable Development of China's Rail Transit," drawing a new blueprint for the development of the global rail transit industry.  Authorities gathered to discuss a new chapter in development. Guo Lin, former Vice Minister of Railways and President of the World Association for the Development of Rail Transit, attended the event and opened the summit with a professional introduction. Guests from supporting organizations such as the Institute of Comprehensive Transportation of the National Development and Reform Commission and the China Urban Rail Transit Association, as well as special co-organizers such as Beijing Subway Operation Co., Ltd. and Beijing Port Subway Co., Ltd., gathered together. Industry leaders such as Alstom China and CASCO Signal also participated deeply, building a multi-dimensional exchange platform linking government, industry, academia, research, and application. Driven by both technological innovation and strategic transformation At the summit, the release of the new book "Research on Railway Power Supply Operation Safety and Technology (2025 Edition)" was a major highlight. This book focuses on safety and technological breakthroughs in the field of railway power supply, providing authoritative technical guidance for industry operation and maintenance. Meanwhile, the unveiling of the book "Digitalization of Railway Power Supply" closely aligns with the background of the construction of "six modern railway systems," proposing a new development pattern of "digital empowerment and intelligent operation and maintenance," and outlining a transformation path for the digitalization, intelligentization, and modernization of railway power supply through a "1-1-5-1-1" action plan.   During the keynote speech session, industry experts conducted in-depth analyses on "Strategic Transformation Driving the Sustainable Development of China's Rail Transit." From technological innovation in railway power supply to the digital transformation of the entire industry; from operational optimization of a single rail network to the collaborative development of global rail transit, the guests' sharing combined macro-strategic vision with micro-technical practical application, injecting new momentum into the industry's development.   Anchoring the future of sustainable development in the industry  Currently, the rail transit industry is at a critical juncture of strategic transformation. This summit serves not only as a review and summary of the 22-year history of global rail transit development, but also as a forward-looking p...
  • Empowering building electrical safety and jointly building a new industry ecosystem
    30/ October 2025
    Empowering building electrical safety and jointly building a new industry ecosystem
    On October 25, 2025, the Annual Meeting of the Hunan Provincial Architectural Electrical Society was held in Changsha. The meeting brought together council members, key electrical design personnel from major design institutes in the province, member representatives, and representatives from electrical equipment manufacturing enterprises nationwide. Industry elites gathered to explore development trends, technological innovations, and future paths in the architectural electrical industry. The atmosphere was highly academic, and the exchanges yielded fruitful results. Anhui Jinli showcased its intelligent lightning protection system, miniaturized surge protection devices, and smart terminals at the 2025 Annual Meeting of the Hunan Provincial Building Electrical Society, becoming one of the highlights that attracted industry attention. As a supporting unit of this annual meeting, Anhui Jinli Electric, with "Safeguarding Electrical Safety and Driving Technological Innovation" as its core mission, explored cutting-edge trends and practical paths in the field of building electrical engineering with industry colleagues. With two decades of experience inlightning protection system, Anhui Jinli Electric is a leading domestic technology service company specializing in the R&D, manufacturing, and sales of surge protection devices (SPDs) and providing comprehensive lightning protection solutions. Anhui Jinli's key laboratory for surge protection devices possesses all the testing capabilities required by national and international standards such as GB/T18802.11/21/31, IEC61643-11/21/31, and UL1449. It is also the only domestic laboratory to have obtained both UL and TUV witnessed laboratory certifications.Jinli’s technical strength and product reliability have deeply served the electrical safety needs of various scenarios, including railways, new energy, petrochemicals, and industry. From technical demonstrations at the product booth to the exchange of ideas at the conference, Anhui Jinli put its philosophy of "professional empowerment of the industry" into practice. Looking ahead, Jinli will continue to focus on technological innovation, working hand-in-hand with partners in the building electrical field to jointly build a safer and more efficient electrical ecosystem, injecting new momentum into the industry's high-quality development. This annual meeting was not only a feast of industry technology and information, but also an important event for building consensus, boosting confidence, and providing guidance. It fully demonstrated the positive role of the Hunan Provincial Architectural Electrical Society in promoting technological progress in the industry, facilitating the integration of industry, academia, research, and application, and serving local economic development. Based on the corporate development philosophy of "protecting users from lightning strikes," we are committed to the electrical safety of electrical systems and focus on lig...
  • Pursuing Strength, Working Together to Achieve Farther Achievements
    14/ October 2025
    Pursuing Strength, Working Together to Achieve Farther Achievements
    Amidst busy work and life, a thrilling and challenging outreach activity provided Jinli's team with a unique and exciting experience. On October 8th and 9th, we gathered at the beautiful East Huangshan Mountain for an unforgettable two-day journey. The theme of the event, "Jinli's Journey: Pursuing Strength, Working Together to Achieve Farther Achievements," permeated the entire event, inspiring everyone to forge ahead courageously. On the morning of October 8th, as the sun began to shine, after a three-and-a-half-hour drive, the Jinli team finally arrived at the vibrant East Huangshan Mountains. Fun games like "grouping" quickly livened up the atmosphere. Then, they were divided into groups, using a points-based system. Everyone was eager to strive for excellence for their teams. During the highly creative F1 car production process, each team collaborated, each fulfilling their respective roles. The design and development staff meticulously conceived the car's shape and structure, the drivers eagerly prepared to demonstrate their skills, the spokesperson introduced the car's highlights, the models added a unique touch to the car, the quality control team rigorously controlled quality, the art team meticulously refined the exterior, and the workshop staff devoted themselves to production. Through this collaborative effort, one stunning car after another was born, filling the venue with cheers and a sense of accomplishment. As night fell, we, usually busy at work, gathered together, washing and chopping vegetables, lighting a fire, and cooking. The food we cooked together tasted especially delicious, and the rich aroma of fireworks was filled with the warmth of home. The bonfire party that followed brought the atmosphere to a climax. Under the dancing flames, Mr. Yang personally led us in a chorus. The passionate singing transcended the distance between us, uniting our hearts and transforming them into an unbreakable force. At the same time, colorful fireworks burst into life in the night sky, reminiscent of our beautiful visions of the future—a dazzling display of beauty. After the fireworks, each group of men fired Gatling guns, their dazzling flames streaking through the night sky. Everyone cheered and reveled in this joyous moment, bringing this beautiful day to a perfect end. The next day, we embarked on an 18.5-kilometer hike along the Sui and Tang Dynasty Ancient Trail. Jin Li's family, braving 36-degree heat and various physical discomforts, persevered, never giving up. Along the way, we also played several fun games, such as the company logo puzzle, which tested teamwork and company familiarity; the A4-shaped trek, which required everyone to use their brains and ingenuity to complete the task; the fun photo competition, which captured moments of joy and creativity; and the ladder puzzle game, which made the hike less tedious and more fun and challenging. Throughout the process, each group supported and encouraged each other, demonstrating...
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