An increasing number of facilities are exploring and appreciating the communications capabilities of electrical power equipment. Modern electrical system protection and metering devices measure and calculate a significant amount of digital data, and most of this data can be retrieved via communications. Due to the availability of these devices and data, systems can monitor multiple devices in a system-wide manner from a central and/or remote location. For the purpose of this article, these systems are referred to as power monitoring systems. Power monitoring systems are becoming easier to establish, including integration into existing equipment not originally equipped with communications.
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