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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 surge protection 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, 320V, 350V, 385V, 440V, 485V and 750V. DC surge protection 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 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, Y means remote signaling, is offered to Huawei projects, with CE, TUV, RoHS certificates.
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. 
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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  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.

Thunderstorm days, lightning protection levels, and lightning protection zones are the basis for building lightning protection design
26/ February 2024
Thunderstorm days, lightning protection levels, and lightning protection zones are the basis for building lightning protection design
How to ensure the safety of people and electrical and electronic equipment in buildings is a concern for managers. We must fully consider all aspects of safety factors at the beginning of the project design, especially lightning protection, which is harmful to sensitive equipment. As a well-known lightning protection brand in China, Anhui Jinli has been committed to the electrical safety of electrical systems and focused on lightning protection technology for electrical systems. Among them, the research and development and production of lightning arresters are at the forefront of the industry. 1. Division of regional thunderstorm days According to the annual average number of thunderstorm days in different regions, regional thunderstorm day levels should be divided into less-mined areas, medium-mined areas, many-mined areas, and strong-mined areas. The data on thunderstorm days is provided by the meteorological department. Manual statistics were relied on in the past, and there were inevitably inaccurate data. Now the meteorological department uses lightning locators for monitoring, and the data on thunderstorm days will change. 2. Classification of lightning protection levels for buildings The interception efficiency of the lightning protection device determines the lightning protection level. The lightning interception efficiency E of the lightning protection device is calculated: E=1-Nc/N. Nc is the maximum annual average number of lightning strikes a building can accept, and N is the estimated annual number of lightning strikes for buildings and household facilities. When E is greater than 0.98, the lightning protection level is level A; when E is greater than 0.90 and less than or equal to 0.98, the lightning protection level is level B; when E is greater than 0.80 and less than or equal to 0.90, the lightning protection level is level C; when E is less than Or equal to 0.80, the lightning protection level is level D. 3. Lightning protection partition Lightning protection partitions can be divided into two parts: external partitions and internal partitions. ① External partition: LPZ0A zone: an area threatened by direct lightning strikes and all lightning electromagnetic fields. Internal systems in this area may be affected by all or part of the lightning surge current. LPZ0B zone: direct lightning protection area, but the threat in this area is still all lightning electromagnetic fields. Internal systems in this area may be affected by all or part of the lightning surge current. ② Internal partition: LPZ1 zone: An area where surge current is limited due to the effect of shunts and surge protectors at the boundary. The space shielding in this area can resist lightning electromagnetic fields. LPZ2~n subsequent lightning protection zone: an area where surge current is further restricted due to the effect of shunts and surge protectors at the boundary. The spatial shielding in this area can further attenuate the lightning electromagnetic fie
  • The development history of SPD backup protector
    18/ February 2024
    The development history of SPD backup protector
    The world's first surge protector was successfully developed by German Shield in 1954. Around 2005, surge protectors gradually began to be widely used in lightning protection of electrical equipment in my country. The requirements of J.1.2 in the Lightning Protection Design Code for Buildings (GB50057-2010): Install overcurrent protection appliances required by the surge protector manufacturer. In the past, due to the lack of suitable products, SPD's overcurrent protection devices have always used miniature circuit breakers or fuses. Starting in 2012, SPD-specific overcurrent protection devices (SCB or SSD) began to appear on the market. The SPD-specific backup protector (SCB) industry standard NB/T 42150-2018 was officially implemented on July 1, 2018. Standard 3.1: Low Voltage The special protection device for surge protectors is an external disconnection device for surge protectors used in low-voltage power systems. It can withstand the expected surge current of the protected surge protector installation and can interrupt the surge current caused by the failure of the surge protector. The generated power frequency overcurrent device has the characteristics of power frequency small current action. The SPD special backup protector (SCB) industry standard NB/T 42150-2018 was officially implemented on July 1, 2018. Standard 3.1: A low-voltage surge protector special protection device is a surge protector used in low-voltage power systems. The external disconnection device can withstand the expected surge current installed by the protected surge protector, which can interrupt the power frequency overcurrent device caused by the failure of the surge protector, and has the characteristics of a small power frequency current operation. The electrical design standard for civil buildings GB 51348-2019 was officially implemented on August 1, 2020. Standard 11.9.11 stipulates that the wires connected to the surge protector should be short and straight, and the total length of the leads should not exceed 0.5m. An overcurrent protection device should be installed on the surge protector installation line. The overcurrent protection device should have the following capabilities: 1. Break the expected short-circuit current of the SPD installation line; 2. Withstand the surge current passing through the SPD without disconnecting; 3. Break the power frequency current so that the built-in thermal protection of SPD cannot break. As a well-known lightning protection brand in China, Anhui Jinli has been committed to electrical safety and focused on lightning protection technology for electrical systems. It has 18 years of research and development experience.
  • Jinli Electric’s technical improvements
    15/ January 2024
    Jinli Electric’s technical improvements
    With the advent of Industry 4.0 and the digital economy, surge protector products (SPD) as internal lightning protection terminal equipment have broad market prospects. Jinli Electric, an innovative lightning protection enterprise in China, has operated for 18 years since its establishment. Over the past year, we have been committed to the testing and basic research of SPD products. The products are constantly updated, and the company continues to improve the market competitiveness of its products. Jinli Electric has always focused on the industry, paying attention to product performance and quality, and attaching importance to product safety and reliability. From the perspective of product application, Surge protectors have shown a trend of customized scene applications and miniaturization of product size. At the same time, SPD is rapidly developing in the direction of intelligence and digitalization, from fault trip remote signaling and lightning counting to peak detection and waveform With the integration of restoration, life prediction, grounding network resistance monitoring, lightning warning, and other services, lightning protection products have gradually integrated into the booming digital wave. As an internal lightning protection terminal product surge protector, Anhui Jinli’s main methods to improve the safety and reliability of surge protectors include the following: a. Improve MOV chip design, use new materials, and improved processes to produce products with low failure rates, and improve inherent reliability. b. Choose an intelligent SPD and monitoring system that can provide life-span warning c. Screen and age SPD to shorten the early failure period. d. Replace the deteriorated SPD as appropriate or regularly. e. Derating design is the main method to improve SPD reliability.
  • How to install a surge protector
    03/ January 2024
    How to install a surge protector
    The surge protector, referred to as SPD, is installed on a 35MM standard rail. For fixed SPD surge protectors, the following steps should be followed for routine installation. First, determine the discharge current path. Second, are the wires marked for the extra voltage drop caused at the equipment terminals? Third, to avoid unnecessary inductive loops, the PE conductor of each device should be marked. Fourth, establish an equipotential connection between the equipment and the SPD. Fifth, it is necessary to coordinate the energy of multi-level SPD. Precautions for installing surge protector The installation of a surge protector requires certain measurements to limit the inductive coupling between the protected part and the unprotected part of the equipment after installation. The mutual inductance can be reduced by separating the induction source and the sacrificial circuit, selecting the loop angle, and limiting the closed loop area. When the current-carrying component wire is part of the closed loop, the loop and induced voltages are reduced due to the proximity of this wire to the circuit. Generally speaking, it is better to separate protected conductors from unprotected conductors, which should be separated from ground wires. At the same time, necessary measurements should be made to avoid transient orthogonal coupling between power and communication cables. When choosing the diameter of the grounding wire of the surge protector, first of all, it is the data line, which must be greater than 2.5mm2; when the length exceeds 0.5 meters, it must be greater than 4mm2. YD/T5098-1998. Secondly, there is the power cord. When the cross-sectional area of the phase wire is S≤16mm2, use S for the ground wire; when the cross-sectional area of the phase wire is 16mm2≤S≤35mm2, use 16mm2 for the ground wire; when the cross-sectional area of the phase wire is S≥35mm2, the ground wire requirement is S/2; GB50054 Section 2.2. 9 items. In addition, the installation of a surge protector requires understanding some of the main parameters of the surge protector. As a well-known lightning protection brand in China, Anhui Jinli has been committed to the power safety of electrical systems and focused on lightning protection technology for electrical systems.
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