During the storm season, we loadometer manufacturers began to get busy, not busy with production, but is busy repairing. Because loadometer customer awareness is not enough, resulting in loadometer lightning, resulting in a loss. We have the following electronic loadometer prone to lightning causes analysis:
Electrostatic induction: loadometer said body for metal objects appear larger, lightning in clouds (the main discharge) before the lightning electrostatic induction effect, said body induced large static charges, when lightning occurs, the cloud charge through the different charge blitz with the ground and quickly, because loadometer grounding resistance is too large, resulting in large static charges in a short period of time within the earth cannot discharge, forming local induction high voltage, and the device with metal poor contact body (called weighing sensor) occurred blitz. A strong discharge is formed. This caused the weighing sensor with high potential and the data bus terminal into electronic equipment (display instrument).
Electromagnetic induction: when lightning strikes near the placement in the weighbridge due to lightning current, great peak current and steepness of lightning channel changes over time, the formation of a strong transient electromagnetic field in the space around the weighbridge system, produce electromagnetic pulse coupling overvoltage and eddy current in a series of conductive objects near the channel. Electronic loadometer weighing sensor, junction box, display instrument as the loop layout is more complex, resulting in lightning magnetism pulse in the loop induced transient high potential and current and endanger and loop connecting equipment.
Lightning wave intrusion: because the power supply line, the signal line housing pounds by overhead laying, power lines, signal lines from lightning or lightning electrostatic induction, electromagnetic induction in the transmission process, the lightning current in pulse wave forms along the overhead lines, signal lines invasion (usually several thousand volts to hundreds of volts), cause serious damage of various types of electronic equipment such as housing pounds loadometer instrument etc..