Charging device for attachment to electrical supply network for supplying current to electric passenger car, has triggering device for generating signal delayed with delay time if current difference is smaller than upper trigger value

摘要

The device has a detection device (24) for producing a transducer signal based on a current difference between phase, neutral and protective conductors (L, N, PE) of a charging cable (20). A triggering device (26) produces a trigger signal for a circuit breaker based on the transducer signal for interrupting a charge current (Il). The triggering device generates the trigger signal delayed with a predetermined delay time if the difference indicated by the transducer signal is greater than a predetermined lower trigger value and smaller than a predetermined upper trigger value. An independent claim is also included for a method for operating a circuit breaker of a charging device of an electric car.