Shenmao Capacitors specialized in aluminum electrolytic capacitors from 1970

Why should capacitors be installed with over-voltage protection?|Focus on mid-to-high-end brand capacitor manufacturers

by:Shenmao     2021-05-14
In electronic circuits, capacitor banks are designed to operate at 1.1 times the rated voltage for a long time. If the bus voltage fluctuates greatly and exceeds this limit value, the long-term overvoltage operation will damage the capacitor’s inter-electrode insulation. Shorten the life, so it must be installed with overvoltage protection. Not only that, the capacitor bank must also be equipped with loss-of-voltage protection, which is to prevent damage to the capacitor when the capacitor loses voltage and closes immediately when it is charged. At this time, the capacitor may withstand about twice the rated voltage The peak value is extremely unfavorable to the capacitor, and it may also generate a large inrush current, causing the circuit to trip or the fuse to blow. Another point is that the capacitor bank must be automatically discharged every time it is cut off, and only after the capacitor's charge disappears can it be closed again. Careful operation can ensure safety.
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