(1) Article 3 of Section 5.4.3 of GB 50343-2012 stipulates that for AC power supply lines entering buildings, at the junction of LPZ0A or LPZ0B and LPZ1, such as the main distribution box of the line,
(1) Article 4.5.4, Article 3 of the national standard GB 50057-2010: A surge protector of Class II test should be installed on the power supply side of the switch in the distribution box. Its voltage
(1) Article 8 of Section 4.2.1 of GB 50057-2010: A surge protector of Class I test shall be installed at the main distribution box where the power supply is introduced. The voltage protection level of
Some applications require two or more surge protection device low-voltage lightning surge protectors to reduce the electrical stress of the protected equipment to an acceptable value (lower Up) and re
When selecting the appropriate voltage protection level value of the surge protective device low-voltage lightning surge protector, the surge tolerance of the protected equipment (or the impact immuni
(1) Under normal conditions, the continuous working current (Ic) shall not cause any personal safety hazards (indirect contact, etc.) or interfere with other equipment. (It is advisable to select a co
(1) The expected life of SPD low-voltage lightning surge protector: mainly depends on the probability of a surge exceeding the maximum discharge capacity of the SPD low-voltage lightning surge protect
(1) Protection distance: In order to determine the location of the surge protection device low voltage lightning surge protector (at the entrance, near the equipment, etc.), it is necessary to know th
(1) Maximum continuous operating voltage Uc: The maximum continuous operating voltage Uc of the surge protective device low-voltage lightning surge protection device should be greater than the continu
The electrical and electronic systems in buildings are very sensitive to transient, high-energy surges caused by lightning discharges. In order to effectively protect various electrical information sy
The TT power supply system refers to a protection system that directly grounds the metal shell of the electrical equipment, which is called a protective grounding system, also known as a TT system. Th
The lightning protection system generally uses the first-level surge protector, second-level surge protective device and third-level surge protection device of Class I, II and III tests. In addition,
Article 3 of Section 5.4.3 of GB 50343-2012 stipulates: For AC power supply lines entering buildings, at the junction of LPZ0A or LPZ0B and LPZ1 areas such as the main distribution box of the line, a
Products that meet the requirements of GB 18802.1- and GB /T 18802.21 and are tested by nationally recognized testing laboratories should be used. The location of the surge protector installation and
The national standard GB/T 18802.12, Section 6.2, includes the following six steps for the selection of surge protective device: 1. Select the Uc.UT.In.Iimp.Imax of the surge protector: (1) Maximum co
1. Long-line oscillation effect: IEC61643-12 "Surge Protectors for Low Voltage Distribution Systems - Part 12: Selection and Use Guidelines" states: The impact of oscillation on the protection distanc
Article 3 of Section 5.4.3 of the national standard GB50343-2010 stipulates: At the junction of subsequent protection areas such as distribution boxes of distribution lines and distribution boxes of e
In the parameters of surge protectors, what is the Up value and how to choose it? National Standard 18802.12 Section 3.1.4 defines: Voltage protection level (Up): It is a performance parameter that ch
In SPD surge protectors, there are various nominal voltage values, such as: abbreviations Un, Uc, and Uo, etc. What do they mean? What is the relationship between them? Let's take a look! According to
Do you know what a surge protector is? In modern electrical equipment, a surge protector is a necessary electrical component that can protect electronic equipment from external overvoltages, such as l
Application of surge protector in TT system, TT power supply system refers to the protection system that directly grounds the metal shell of electrical equipment, which is called protective grounding
Surge protector (SPD) is an electronic device that provides safety protection for various equipment and communication lines. When lightning occurs, it may cause great damage to electrical equipment an
Surge protectors, also known as lightning arresters, are suitable for AC 50/60HZ, rated voltage 220V to 380V power supply systems to protect against indirect lightning and direct lightning effects or
How about the composite surge protector? Is it good? For this question, let's take a look today, use data to speak, and find the answer in your heart! We know that there are many types of surge protec
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