Patent ID: 7436646
Filing Date: 2008-10-14
Classification: H01G

Abstract:
1. A protection element for a capacitor with self-healing properties, said protection element having a membrane ( 4 ) and being provided for activating, upon a pressure exerted on said membrane, by a gas produced upon a self-healing operation occurred within said capacitor, a current interruption element ( 8 ) to be connected in series with an electrode of said capacitor, said current interruption element being provided for interrupting an electrical current flowing towards said electrode when said pressure is exerted on said membrane, said current interruption element being operationally engaged with a temperature sensitive member ( 19 ) provided to react when sensing a temperature increase above a predetermined value, characterized in that said membrane is provided to exert a pressure on said current interruption element in order to activate the current interruption element, said temperature sensitive member being provided for applying a pressure on said current interruption element when sensing said temperature increase above said predetermined value in such a manner as to operate said current interruption element.