The Unipower HPL500-MB is equipped with specially developed power supply for use from 100V - 575V - both single phased and three phased. Mains voltages in the whole world is hereby covered with one unit. HPL500-MB also measures currents up to 40A without the use of an external current converter. As with all Unipower HPL-modules, the HPL500-MB integrates the functions necessary to establish an efficient and compact supervision or control; Start timer, reaction timer, setpoints etc. For setup simplicity, the HPL500 includes peak detectors on the power measurement. This MB-version is an RTU-slave on a MODbus network. The measurement is based on a fast four quadrant multiplication of current and voltage making the HPL500-MB capable of measuring the exact power consumption also on frequency inverters. Measurement: P = 1.732 x V x I x Cos Phi.