Recommended Surge Protection Solution
SURGE
Surge, as the name implies, is an instantaneous overvoltage exceeding the normal working voltage, known as transient pulse voltage, transient overvoltage, surge or surge, etc. A violent pulse usually lasts about one-millionth of a second. A voltage fluctuation of 5KV or 10KV that lasts for an instant (one-millionth of a second) in the 220v circuit system is a surge or transient overvoltage. According to statistics, in the United States: the direct losses caused by power surges to various industries, such as production stoppage, time loss, equipment maintenance, and premature replacement of equipment, are as high as 26 billion U.S. dollars per year. In China, according to relevant statistics, problems occur during the warranty period, 63% of all electrical products are generated due to power surges.
Surges Caused By Lightning Strikes Can Be Divided Into:
Induced lightning surge overvoltage: The rapidly changing electromagnetic field generated by lightning strikes and lightning, the electric field radiated by lightning acts on the conductor, and induces a high overvoltage. This type of overvoltage has a very steep front and decays rapidly.
Direct lightning strike and surge overvoltage: directly falling lightning on the power grid, Due to the huge instantaneous energy and strong destructive power, there is no device that can protect the direct lightning strike.
Lightning conduction surge overvoltage: It is conducted from distant overhead lines. Since the equipment connected to the power grid has different suppression capabilities for overvoltage, the conduction overvoltage energy is weakened with the extension of the line.
Oscillating surge overvoltage: The power line is equivalent to an inductance, and there is distributed capacitance between the earth and adjacent metal objects, forming a parallel resonant circuit. In TT and TN power supply systems, when a single-phase ground fault occurs, due to the high-frequency components resonate and generate high overvoltage on the line, which mainly damages the secondary instrument.
Test Waveform
Protection Plan Recommendation
If during the test, the residual voltage of the surge is too high, resulting in damage to the equipment under test, you can add a level of protection behind the common mode coil (inside the red dotted line), and the selection of devices can be the same as the previous level, you can also choose pressure-sensitive tubes and gas discharge tubes with a slightly smaller flow rate to save costs.
- +1 Like
- Add to Favorites
Recommend
- The Application of Copper Tubes and Its Importance
- NPM Pressure Molded Pressure Sensors Adopt“Backside Absolute Pressure“ Technology
- TDK Announces the InvenSense ICP-10125 Waterproof SmartPressure™ Sensor Platform, Achieving the Industry’s Lowest Pressure Noise of 0.4 Pa RMS
- WAYON High Current Gas Discharge Tubes Features Low Capacitance and Wide Voltage Range, Boosting Circuit Safety Protection
- Eaton authorizes Sekorm to distribute inductors, fuses, TVS tubes, super capacitors, power modules and other products
- Is It Always Difficult to Use and Replace MOS Tubes for Multimeter Tests?
- Ultra-stable Digital Output Pressure Sensor AS1318HU Series, Provides Low Noise, 24-bit Pressure Data and 24-bit Temperature Data
- A 12V DC Lightning Protection Solution from Yint
This document is provided by Sekorm Platform for VIP exclusive service. The copyright is owned by Sekorm. Without authorization, any medias, websites or individual are not allowed to reprint. When authorizing the reprint, the link of www.sekorm.com must be indicated.
Integrated Circuits
Discrete Components
Connectors & Structural Components
Assembly UnitModules & Accessories
Power Supplies & Power Modules
Electronic Materials
Instrumentation & Test Kit
Electrical Tools & Materials
Mechatronics
Processing & Customization
