The MTS-1010 and MTS-1030 Multi-function Powermeters are portable, digital meters developed specifically for power related applications in the relay, metering and Instrumentation & Control departments. The MTS-1010 and MTS-1030 can be used to verify metering and relaying circuits for accuracy, polarity and phase. They can also be used to do timing checks or monitor the outputs of unmetered test equipment. When used in conjunction with the MTS-1200 3 Channel Voltage/Current Source (and optionally the MTS-1300 3 Phase Voltage Source) they form the basis for an economical and capable protective relay test set.