Apparatus and method for measuring and reporting the reliability of a power distribution system

摘要

An intelligent electronic device for measuring various power parameters from a electrical power distribution system is disclosed. The device is capable of measuring and reporting the reliability of the electrical power distribution system as the number of consecutive 9's digits appearing in the computed percentage of system downtime versus system uptime. Depending on the level of reliability required, the computation of the percentage may be altered to increase or decrease resolution.