GB50054 "Low Voltage Power Distribution Design Specification": There are three types of grounding for low voltage power distribution systems, namely IT system, TT system, and TN system. The first lett
The standard AC voltage commonly used in our country is: phase voltage is 220v, line voltage is 380v, and the mathematical relationship between phase voltage and line voltage is: line voltage is √3 ti
For example: In a three-phase five-wire power supply system (such as a TN-S grounding protection system), the surge protector consists of three phase lines, one neutral line, and one PE line. In this
When many people are selecting surge protectors, they often find such a problem: Why is the line voltage 380v or 440v, but the surge protector model Uc value selected by the lightning protection manuf
When we select a surge protector, we often only select the parameters and often do not care about the product type of the surge protector itself; in fact, it is very important to choose a surge protec
Lightning is a repeated breakdown process of continuous discharge. The main discharge is not completed in one time. It has multiple repeated processes, generally 6-15 times, and up to more than 40 tim
① Increase the line distance between the two-stage SPD (greater than 10m) By increasing the line distance between the second-stage SPD and the first-stage SPD to be greater than 10m, the distributed i
According to GB50343 "Technical Specifications for Lightning Protection of Electronic Information Technology in Buildings", Section 5.4.3 10: The purpose of SPD energy coordination is to use the curre
Surge protector is a kind of protective device used to protect power systems and equipment from various transient overvoltages (lightning overvoltage and operating overvoltage) and impact current dama
Wind energy is one of the most mature and large-scale renewable clean energy sources. Wind power generation has brought great opportunities for the harmonious development of man and nature. However, d
A surge protector is a device used to protect electronic devices from sudden current changes. It can effectively eliminate sudden current changes caused by unstable factors such as lightning strikes a
Many friends who are engaged in electrical engineering are confused about the selection of surge protectors, because surge protectors have different levels and specifications, and it is difficult to f
The surge protector of the distribution cabinet is an important device used to protect the distribution system and related equipment from damage by surge voltage and current. It is mainly installed in
Nowadays, with the advancement of technology and the improvement of living standards, there are many electrical devices. However, due to the instability of the power grid and the unpredictability of n
In the field of electrical safety, the selection of surge protectors for distribution cabinets is a crucial task. It is related to the stability of the entire power distribution system and the safety
In the power system, the selection of surge protector specifications is an important part of ensuring the stable operation of electrical equipment. Choosing the appropriate surge protector specificati
In modern electrical systems, surge protectors play an indispensable role. As a professional electrical protection device, it can effectively resist transient overvoltages caused by lightning, operati
As an important protective device, surge protector plays an important role in protecting equipment from surge current. When choosing a surge protector, an important parameter is the Up value. So, do y
Photovoltaic power generation is a renewable and clean energy source that is widely used in various countries and regions. Lightning strikes and surges are a major hazard to photovoltaic power generat
1. Project acceptance is unqualified For projects such as new buildings, if the qualified standards for lightning protection acceptance are not met, the project may not pass the acceptance, which will
Why install a surge protector? As a surge protector manufacturer, we often encounter customers asking: "Why do I need to install a surge protector? What are the regulations that require the installati
Recently, many customers have asked us how to choose a primary surge protector? How to determine whether the on-site distribution box should be equipped with a primary surge protector? How to determin
As an important circuit protection device, surge protector is widely used in industrial control systems, communication equipment, household appliances and other fields. How long does it take to replac
Lightning arrester 1. Lightning arresters have multiple voltage levels, ranging from 0.38KV low voltage to 500KV ultra-high voltage, while surge protectors generally only have low-voltage products; 2.
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