Non-contact self-powered electric power monitor

摘要: An electric power monitoring device that senses system voltages by capacitive coupling to one or more conductors. The may be embodied wrapping a conductive material around the insulating covering of conductor. A capacitor is connected between and reference voltage form simple divider. across proportional used as an information signal which analyzed microprocessor, after being converted digital analog-to-digital converter. Standard current transformers provide signals, are also microprocessor. Operating derived from signals generated transformers. monitor requires no direct connections conductors separate source operating power.