WQ 0207 meters are intended for energy measurement in single phase or three phase systems, class 1 (EN 61036). They are built into a standard 96x96 mm DIN case. The meter is microprocessor controlled. Energy is displayed with 7-digit electromechanical register which retains the value also in case of auxiliary power supply failure. The instrument can be adapted to the applied current measuring transformers. Two instrument versions enable not only energy measurement but also simultaneous analogue display of momentary power value (active or reactive) or a power factor.