Surge Protector, also called SPD (Surge Protective Device), is a device used to protect the electric power system, which can effectively protect the electronic equipment from the damage of sudden voltage shock. In this article,we will introduce the working principle, application scope, classification and selection of surge protectors.
The working principle of the surge protector is based on the physical principle of voltage mutation and voltage surge. In the power system, when the voltage changes suddenly, it will produce transient over-voltage and over-current, which will cause damage to electronic equipment. The role of surge protectors is to protect electronic equipment from damage by limiting and shunting these overvoltages and overcurrents.
Surge protectors are used in a wide range of applications, including residential, commercial and industrial. In the residential sector, surge protectors are typically used to protect household appliances and computer equipment such as televisions, computers, and air conditioners. In the commercial and industrial sectors, surge protectors are typically used to protect high-end equipment such as manufacturing equipment, communications equipment and data centers.
Surge Protector, Lightning Protector Manufacturer
Surge protectors can be categorized according to different application scenarios and working environments. Common categorization methods include voltage level, installation location, working principle and so on. According to the voltage level to categorize, surge protectors are mainly divided into low-voltage surge protectors and high-voltage surge protectors. According to the installation location to be categorized, the surge protector is mainly divided into outdoor type and indoor type two. According to the working principle of classification, the surge protector is mainly divided into voltage limiting type, current limiting type and hybrid type.
Recommended here to use in line with the national standard, CQC safety certification of the Kay surge protector series of products, product description: the product adopts an independent modular design, good sealing, suitable for 35mm DIN-rail mounting. Each group of lines of lightning protection module using temperature-controlled disconnection technology, with overcurrent protection. The lightning protection module is automatically disconnected when it deteriorates, which can completely avoid the fire risk. The lightning protection module is equipped with a remote alarm interface, which is convenient for remote monitoring. This power surge protector is a modular power surge protector (referred to as: SPD), installed in the low-voltage power distribution system at the front end of the distribution equipment, can prevent lightning and other factors such as induction overvoltage, overcurrent phenomena and other instantaneous surge voltage on the system or equipment caused by permanent damage or instantaneous interruption of the hazard.
Product design standards: This product is designed in accordance with the relevant IEC standards, product performance in line with GB 18802.1-2011 "Low-voltage surge protector (SPD) Part 1: Low-voltage power distribution system surge protector Performance requirements and test methods" national standards.
Product structure: The product adopts independent modular design, good sealing, suitable for 35mm rail mounting. The lightning protection module of each group of lines adopts temperature-controlled disconnection technology with overcurrent protection function. The lightning protection module is automatically disconnected when it deteriorates, which can completely avoid the fire risk. The lightning protection module is equipped with a remote alarm interface, which is convenient for remote monitoring.
Product features: the product has a low residual voltage, fast response speed, large through-current capacity (maximum discharge current Imax 25kA / line), long product life, simple maintenance, easy to install and so on.
Scope of application: Generally installed in the building low-voltage main distribution cabinet/box, it can protect all kinds of power supply inlet terminals installed in the distribution system at the border of LPZ1 and LPZ2 in the building, and the power supply equipment withstanding impact voltage category is II.
For example.
1) Low-voltage general-purpose electrical cabinets and/or distribution panels in buildings.
2) Outdoor cabinets/distribution boxes.
3) Applicable power systems: TT, TN, IT.
Product Maintenance:
When the module window indication is transparent, it is normal, when it is red, it is damaged and the lightning protection function is invalid, please remove the damaged module in time and install a new one, and check whether the screws are loose or not. (Note: the installation must be disconnected from the power supply, prohibit electrified operation; grounding wire as thick and short as possible and grounding resistance should be less than 10Ω.)
When selecting a surge protector, you need to take into account the different application environments and requirements. First of all, you need to determine the type of equipment to be protected and the type of circuit, and then select the appropriate surge protector according to its voltage level, installation location and working principle and other factors. At the same time, it is necessary to take into account the surge protector's rated current, response time, capacity and other parameters to ensure that the surge protector can meet the actual demand.
In conclusion, the surge protector SPD (lightning protector) is a very important power system protection equipment, which can effectively protect electronic equipment from damage caused by sudden voltage shocks. In different application scenarios, we need to analyze the use of matching model specifications according to the use of specific scenarios
