Increased safety for AC filter capacitors thanks to MESIS® monitoring function
ELECTRONICON presents AC capacitors with Mesis® safety switch for the first time. They are based on the Mesis® protection for low-inductance DC capacitors that had already been launched in 2021: if pressure builds up inside the capacitor as the result of a failure in the dielectric, a switch at the base of the can is actuated, which allows for immediate detection and disconnection of the affected capacitor via an associated monitoring circuit.
In contrast to customary AC capacitors with overpressure protection, the new type of protection works without expansion of the housing. For the first time, protected AC capacitors can now be connected with rigid bars instead of flexible conductors; vibration-related problems at the connections are finally a thing of the past. In addition, failure-caused changes of capacitance can now be recognized immediately, and shifts in the filter circuit be prevented this way.
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