DPB51CM44 Carlo Gavazzi

DPB51CM44, Control Relays and Protection Control Multifunction Three-phase, Three-phase with Neutral, TRMS Model DPB51, DPB51CM44, 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 a multi-voltage relay. 17.5 mm box suitable for panel mounting., DPB51CM44, Connected with the 3 phases (and neutral) the DPB51 relay connects when all 3 phases are present at the same time, the phase sequence is correct and the phase-phase (or phase-neutral) 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. 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. 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 max level. Selected