Pump Protection Relays
Fanox Control Panels protect pumps against dry running without using level sensors. Protections: Dry running, overload, overvoltage, phase loss, incorrect phase sequence. Maximum protection without level elctrodes or level relays.
3 phase by COS φ – PF-R Relays
Using the motor itself as a sensor and without requiring any external detectors, they monitor the cos φ of the motor and stop it before a breakdown occurs caused by dry running, cavitation or closed valve.
3 Phase by Undercurrent - P Relays
Suitable where the undercurrent (running wihout load) is critical. For IN of the motor below the minimum setting IB pass the cables several times (n) through the holes in the relay IB = n x IN. For IN of the motor above the maximum setting IB use 3 CT …/5 and the relay P 19
1 Phase by Undercurrent - PS-R Relays
Without requiring any external detectors like level electrodes, it monitors the load of the motor and stops it before an expensive breakdorwn The great advantage of the PS relay is that, without requiring any external detectors like level electrodes, it monitors the load of the motor and stops it before an expensive breakdown occurs.occurs.
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