Capacitor
capacitor
Capacitor
In the event of overvoltage, thermal overload or ageing at the end of the capacitor‘s useful service life, an increasing number of self-healing breakdowns may cause rising pressure inside the capacitor.
Overview
Protection against Overload and Failure at the end of Service Life
In the event of overvoltage, thermal overload or ageing at the end of the capacitor's useful service life, an increasing number of self-healing breakdowns may cause rising pressure inside the capacitor. To prevent it from bursting, the capacitor is fitted with an obligatory «break action mechanism» (BAM™). This safety mechanism is based on an attenuated spot at one, two, or all of the connecting wires inside the capacitor.
With rising pressure the case begins to expand, mainly by opening the folded crimp and pushing the lid upwards. As a result, the prepared connecting wires are separated at the attenuated spot, and the current path is interrupted irreversibly. It has to be noted that this safety system can act properly only within the permitted limits of loads and overloads.
With rising pressure the case begins to expand, mainly by opening the folded crimp and pushing the lid upwards. As a result, the prepared connecting wires are separated at the attenuated spot, and the current path is interrupted irreversibly. It has to be noted that this safety system can act properly only within the permitted limits of loads and overloads.