Phase sequence monitoring relay TCP-SF

SPCOthree-phaseAC

• measuring voltage without neutral • does not detect phase failure with regenerated voltage present • LED indicators for power supply, relay and reaction timer Phase failure relay to monitor 3-wire, 3-phase systems for the failureof one or more phase and the correct phase rotation (L1, L2, L3)The TCP-SF detects if the phase sequence is correct and that no phasehas failed. If this is the case, the output relay R energises and the yellowLED is illuminated. At a loss of one phase the output relay R de-energises.The relay energises again, when the failed phase/phases resume.The control relay will not detect a phase failure with a regenerated voltagepresent on the failed phase. (Suitable for lift/elevator applications wherethe car must continue to the next stop and then not restart) supply voltage variation nominal voltage +/- 10% frequency range 48 - 63 Hz duty cycle 100% reset time < 25ms