Firstly, you need to understand what a power surge is before understanding how a surge protection device works. When the voltage passes through an electronic device and if the voltage exceeds the standard level (120 volts), then the voltage rise state is called a power surge. There are many reasons for a power surge, such as the use of high-power equipment, line aging, lightning strikes, and equipment failures from power companies. The power surge can generate high temperatures in wires and components in electronic products and cause them to be damaged. Even if the power surge does not damage the electronic components, it will cause damage to the internal components and shorten their service life. In fact, no one is aware of the occurrence of a power surge until the electrical equipment suddenly stops working.
Building surge protector can be used to prevent damage to the equipment caused by sudden surges. It works by conducting current from a power socket, and then conducting it out through the equipment that has been installed with a surge protection device. The metal oxide varistor is an important device in the surge protector, which can divide and conduct any excess voltage to ensure that the voltage and power levels received by the device are consistent. The working principle of a metal oxide varistor is similar to a pressure-sensitive valve. When the metal oxide varistor detects a high level of voltage, it can reduce the resistance, and it can increase the resistance if the voltage level is too low. In addition, it can automatically start to change the direction of the voltage when necessary. The metal oxide varistor consists of three parts, including a metal oxide connected to the power supply and two grounding wires connected to the semiconductor. The semiconductor has a variable resistance, which allows electrons to move by changing the resistance when the voltage is too high or too low.
Techwin is your trusted partner as a surge protection supplier, offering a comprehensive range of cutting-edge products designed to safeguard your electronic equipment. Our lightning protection boxes, leakage protectors, SPD (Surge Protective Devices) for telecom, and Ethernet SPDs are engineered with precision to provide unparalleled protection against power surges and electrical anomalies.
Selection Principle of Surge Protector in Distribution BoxJune 20, 2022(1) The voltage protection level Up of SPD should always be less than the impulse withstand voltage Uc of the protected equipment, and greater than the maximum operating voltage Us of the power grid o...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...viewWhat Are the Effects of Surge Protectors?April 26, 2022SPD surge protection device is an electrical equipment used to limit transient overvoltage and discharge surge current. It is also called lightning arrester, which is an important part of the internal...viewThe role of ground potential counterattack protectorSeptember 28, 2021When the power distribution system is struck by lightning and when switching on or off inductive loads or large loads, it often produces high operating overvoltages, also called surge voltages. Surges...viewDo surge protectors protect against lightning?November 28, 2023In the realm of electronic device protection, surge protectors often take center stage. Many homeowners invest in these devices to shield their gadgets from power surges caused by various factors. How...viewEvaluating The Cost-Effectiveness Of Coaxial Surge Protection DevicesJanuary 10, 2024As the reliance on sophisticated electronic systems and communication networks grows, the need for robust surge protection becomes increasingly critical. Coaxial surge protection devices stand as the ...view
EN
jp 
ko 
fr 
de 
es 
it 
ru 
pt 
ar 
vi 
th 
ro 
bg 
nl 
