Over-current protection relay PAP series

under-currentthree-phasetime delay

The set point adjustment range is between 40% and 120% of the nominal current with 1A or 5A nominal input current (via current transformers or direct connection). An internal differential setting of 1% reduces nuisance tripping if the measured signal is noisy or unstable. Relay will trip if the measured current moves outside the set point limit and the red LED indicates a fault condition. An adjustable time delay eliminates premature operation on short duration current fluctuations. During this delay period the red LED will flash. Protectors draw their operating power from a separate auxiliary supply input. Under Current - PAU Should the monitored current fall below the set point level Imin, the protector will trip and the red LED will illuminate indicating the fault condition. During the time delay period the red LED will flash for the set time (t) before the relay de-energises output relay contacts. The relay will automatically reset once the monitored current rises above the set point level Imin plus the differential (internally pre-set 1%) causing the red LED to extinguish and the relay to make without time delay