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How to apply a lightning protection method to a ground wire of a truck scale
In recent years, some electronic devices have experienced lightning strikes during the thunderstorm season, which not only caused heavy losses but also affected normal use. How to avoid lightning strikes to avoid losses! Electronics is a precision instrument involving many kinds of equipment. Although various components have taken necessary technical measures during manufacture, the entire device is a weak system. In order to ensure metering performance, technical performance, and safety performance, grounding and grounding devices are necessary. A safety technology measure.
Here are some common lightning protection grounding methods for truck scales:
First, the basic grounding: truck scale can be used in the welding or strapping grounding net, and electrical connection with the anchor bolt to form a grounding net embedded in the foundation for the protection of the scale platform, sensor and pipeline grounding, grounding resistance is less than 4 ohms.
Second, the lightning protection grounding net: The lightning protection device and grounding body made of lightning protection strip, lightning arrester, lightning arrester, lightning rod and the grounding body are in radial or annular mutual communication. The lightning arrester adopts the lightning current down conductor and the material adopts a (40) mm galvanized flat steel or multi-strand copper conductor with a cross-sectional area of ​​not less than 95 mm 2 , which is connected to the grounding body.
Third, the ground pound house grounding: from the pound room foundation closed ring grounding device and pound house vertical and horizontal beams in the two more than the main steel together, the pound house in the pound room and pound room grounding grid welding connection. The power supply in the pound room must have a ground wire, and a three-phase plug must be used. At the same time, a lightning arrester, leakage protector, and air switch should be added to the power line to provide safety protection. The shell of the weighing instrument must be in effective communication with the grounding peg, which is advantageous in suppressing or eliminating various electromagnetic interferences.
In routine testing, it was found that many users lacked understanding of the importance of grounding in trucks. Simple grounding did not even ground, and as a result, it was often affected by electromagnetic interference or even by lightning. Therefore, correct and reasonable grounding can enhance the safety and reliability of electronics, and ensure the safe use and accurate and reliable electronic value.
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Truck scale lightning protection method