Manufacturers usually include built-in fuses in each capacitor element. If a fault occurs in an element, it is automatically disconnected from the rest of the unit. The unit can still function, but with. Unit fuse protection limits the duration of arc in faulty capacitor units. This reduces the risk of major mechanical damage and gas production, protecting neighboring units. If each unit in a. While each capacitor unit generally has fuse protection, if a unit fails and its fuse blows, the voltage stress on other units in the same series row increases. Each capacitor unit is designed to withstand up to 110% of its rated voltage. If another unit in the same row fails, the stress on the remaining healthy units increases and can exceed their.
