... Logging(512KB Memory,20,000 Sets) 3).RS-232 Three Phase Power Analyzer TES-3600 10 Display Easy - to - View ... KW, KVAR, KVA, PF, θ ,Hz, & Energy KWh, KVARh & KVAh Measurement. Phase sequency indicator function. Backlight display function. Manual Data Memory and ... and Start / Stop Time. RS-232 Optical Interface with three phase voltage / current Waveform display and Harmonic analysis. Easy - to - use ...