TeSys island voltage interface module, 100-690V / 47-63Hz. Connected to a TPRBC bus coupler it measures the mains voltages powering the loads. It provides the voltage values for power and energy calculation, calculates the RMS values and phase sequence. Voltage measurement range 100-690 V +/- 5 %, phase frequency measurement range 47-63 Hz +/- 1 Hz in single phase or 3-phase systems. Mounting on DIN rail together with the other modules of the TeSys island configuration. Multi standards certified (IEC, UL, CSA, CCC, EAC), Green Premium compliant (RoHS/REACh).