1. Industrial Motor Protection in Manufacturing Facilities
Protects 3-phase AC motors from sustaining permanent stator damage caused by phase loss, phase reversal, or prolonged undervoltage events on the factory floor.
Problem SolvedOperating a 3-phase motor with a missing phase causes it to draw excessive current, while a reversed phase sequence spins equipment backward. The K8DS-PU2 mitigates both by instantly detecting the fault (< 0.1s) and tripping the motor contactor via its SPDT output.
Phase sequencePhase lossUndervoltage detectionSPDT trip output380-480 VACMotor contactor
2. HVAC Chiller Compressor Power Monitoring
Safeguards large rooftop HVAC installations and industrial process chillers from grid voltage fluctuations and unbalanced phase supplies.
Problem SolvedHeavy chiller compressors can stall and burn out during 'brownout' undervoltage conditions. The relay's adjustable undervoltage threshold (-30% to 25%) allows engineers to fine-tune dropout points while the inverter-noise immunity guarantees reliable reading near variable frequency drives.
Undervoltage thresholdInverter noise resistanceBrownout protectionChiller control panel3-phase 3-wire
3. Water and Wastewater Pumping Station Safety
Monitors the incoming utility power for remote municipal pumping stations to ensure safe and continuous fluid transfer.
Problem SolvedRemote pumping stations frequently suffer from utility grid anomalies. The K8DS-PU2 monitors for critical phase loss and utilizes its 1-second Power ON lock time to ignore transient instabilities when utility power is first restored, preventing nuisance tripping.
Pump controlPhase reversal lockoutPower ON lock timeDIN rail mountTransient suppression
