| 摘要 |
A stand-alone electrical power metering system for sub-metering applications. The non-invasive system has current transformers (44, 45) placed around the electrical service legs (33, 34) of the electrical supply to a customer's service panel (13), and with associated voltage taps which are then routed to an interface panel which interfaces the sensed readings from the voltage taps and the current transformers, processes the values within circuity associated with the interface panel (28) and then supplies the resulting values to an electronic metering circuit board (24) which processes the values to electrical power consumption readings to provide electrical comsumption readings for visual display and/or communication to external equipment, e.g., via an optical port, for reading and billing. |
