Power Monitor 51 A Electrical parameters have to be measured and visualised to optimise your machines' and systems' energy requirements. Only this allows analysis and, subsequently, the achievement of savings and the establishment of an energy management system. An easy-to-install solution is now available from Weidmüller. When implementing an energy management system according to ISO 50001, the Power Monitor 51A is one of the modules necessary to meet the requirements of recording, displaying and analysing power flows. Existing systems can also be quickly retrofitted. All relevant electrical parameters within a 3-phase network can be visualised: measurement of current, voltage, power, energy consumption, efficiency, apparent power and reactive power. Measurement is possible using a conventional current transformer. The four-line display (LCD), which is larger than average, allows all important measurement parameters to be read at a glance. A large membrane keyboard facilitates reliable navigation.