Rows - light arc fault - a circuit breaker and current under refractive - the method

摘要

It is a circuit breaker (10) to interrupt current in an outer conductor (20) is provided. The circuit breaker contains separable contacts (24), a trigger mechanism (26), a bimetal (30), a microprocessor (12), a rows light arc - recognition sequence (14), a low-pass filter circuit (38), and a high pass filter circuit (36). The trigger mechanism opens, optionally, the separable contacts, when it is triggered. The rows of light arc - recognition sequence is resident on the microprocessor and contains a plurality of rows error - recognition algorithms (72, 76, 80, 84). The low-pass filter circuit is a low-pass signal (48) of the rows of light arc - recognition sequence ready. The high pass filter circuit represents a high pass signal (46) of the rows of current recognition sequence sheet ready. The sequence selects a certain algorithm from the plurality of algorithms based on the low-pass signal from. The sequence calculates a plurality of statistical features from the high pass signal and transmits an output signal (54), around the release mechanism based on a comparison of the plurality of statistical features with the trigger certain algorithm.