Trip unit with software downloading capability has trip module that responds to trip signal from micro-controller that may store firmware in its non-volatile memory, content of which may be upgraded via communication port

摘要

An A/D converter (40) converts signals generated by a sensor (36) into a digital value indicating a condition of a power line, which may be passed to a micro-controller (44). A trip module (58) responds to a trip signal from the micro-controller that may store a firmware in its non-volatile memory (50). The content of the latter may be upgraded by receiving a new firmware via a communication port (62).