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DPB01CM23, Control relays and Protection Control Multifunction Three-phase, Three-phase with Neutral, TRMS Models DPB01, PPB01, DPB01CM23, Voltage control relay for three-phase or three-phase systems with neutral. Controls phase sequence, phase breakage, and max. and min stress (adjustable separately), with built-in delay function. With measurement scale from 208 to 480 WL available from two multi-voltage relays., DPB01CM23, Connected with the 3 phases (and neutral) the DPB01 and PPB01 relays connect when all 3 phases are present at the same time, the phase sequence is correct (not N versions) and the phase-phase (or phaseneutre) voltage levels are within the selected limits. If any of the phase-phase or phase-neutral voltages are above or below the respective max and min levels selected, the red LED will flash at 2 Hz and the output relay will disconnect after the adjusted time period. In any case, if the phase-neutral measurement is selected, both the phase-phase voltage and the phase-neutral voltage will be controlled. If the phase sequence is incorrect or a phase loss occurs, the output relay will disconnect immediately after a delay period of 200 ms. The fault will be indicated by the red LED flashing at 5 Hz during the alarm situation. Example 1 (mains control) The relay controls max. and min voltage, phase breakage and correct phase sequence. In the case of the N versions, the relay controls the max voltage and min. Example 2 (load control) The relay disconnects when one or more phases are interrupted, when any of the voltages are below the selected min level or above the selected max level.
DPB01CM23
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