The special protection device for low-voltage surge protector (SSD) is an external disengagement device of the surge protector used in the low-voltage power supply system, which can withstand the expected surge current at the installation of the standby surge protector and the power frequency overcurrent caused by the failure of the surge protector, and has the characteristics of power frequency small current action.
The function of spd for lightning protection is to limit transient overvoltage. It is generally connected in parallel on the main circuit and has the property of high impedance. When TOV occurs in the circuit, it will conduct and discharge the surge current. At this time, it is the conduction mode and can be regarded as a directly grounded conductor, which can discharge the surge current in the main circuit to the grounding wire.
While the surge backup protector cannot be used alone, it must be connected in series with the surge protector against lightning and connected to the front of the SPD surge protector, which usually will not affect the normal working capacity of the surge protector against lightning, but will be quickly broken when the power frequency short-circuit current appears in the line.
There are great differences between antenna surge protector and backup protector. Surge protector is used to protect the electrical safety of the main circuit and prevent lightning current from damaging the protected electrical facilities. The backup protector is a backup protection device used to protect the surge protector from being damaged by power frequency short-circuit current and protect the surge protector from heating and fire. The backup surge protector can not cut off the power frequency short circuit protection in the power frequency surge protector itself. Therefore, both of them are very important. At the same time, neither of them can replace each other. The lightning protection measures in electrical equipment need the mutual cooperation of surge protector and backup protector.
What Are the Lightning Protection Devices?September 18, 2021The whole set of lightning protection devices can be divided into flash catcher, lead wire, lightning protection and grounding device. Lightning protection device is to prevent the equipment from bein...viewUnderstanding The Technology Behind Lightning Protection Devices For Building StructuresJanuary 10, 2024In the field of building safety, the technology encompassed within lightning protection devices for building structures serves as a strong shield against the unpredictable nature of lightning. This pa...viewThe Importance of Lightning Protectors in Protecting Home Appliances and ElectronicsFebruary 29, 2024In today's digital age, our homes are filled with a multitude of electronics and appliances that we rely on daily. From televisions and computers to refrigerators and washing machines, these devic...viewInstallation Steps of The Surge Protection DeviceAugust 30, 2021Ⅰ. Tools of installing a surge protection deviceBefore installing the surge protection device, tools such as a flat-blade screwdriver, a pair of wire strippers, some pliers and electrical tape are ne...viewView of beautiful waterfall in Maluan Mountain in autumnOctober 21, 2022In order to enrich the cultural life of employees, under the organization of the Administration Department, We established "Techwin Outdoor Activities Team" mean to our employees to w...viewHow Important is Installing Camera Signal Surge Protectors?March 13, 2023Network camera lightning protector, network camera lightning protection, camera lightning protector, KAIYUAN network camera, surge protector suitable for AC/DC power supply and network interface monit...view
EN
jp 
ko 
fr 
de 
es 
it 
ru 
pt 
ar 
vi 
th 
ro 
bg 
nl 
