Power Management System (Power Limiter) SCADA

タイトルまたは説明

when maximum specified current in any load phase is exceeded (over current);
3. against "ground" leakage currents (earth fault);For each separate type of protection, the unit allows to enable or disable automatic load reset.Using OM***0 the user has possibility to choose functionality of additional relay and use it for following operations:

OM***0 device provides the following types of load protection:
1. when the mains voltage is of poor quality (impermissible voltage surges, phase loss, incorrect phase se-quence and phase "coincidence", phase/line voltage imbalance);
2.

OM***0 provides electric equipment protection by means of a magnetic starter (contactor) coil control.

Using OM***0 the user has possibilityto choose functionality of additional relay and use it for following operations:
- signalization emergency situations
- contactor connection of additional loading
- as time relay
- signalization of reactive power excess
- signalization of active power excess

Communication :
- control and parameters transfer via RS***5 interface according to MODBUS protocol,
- control and parameters transfer via RS***2 interface.

OM***0 power limiter is designed for the following applications:
- load protection at poor parameters of the mains;
- complete load cutoff in case if watts exceeds the main threshold within the user-set time period;
- partial load cutoff in case if watts exceeds the additional threshold within the user-set time period;
- measurement and indication of *-phase electric circuit (delta voltage and mesh voltage RMS values; positive phase, negative phase and zero phase sequence voltages; phase currents RMS values; wattage of active power, wattles power, apparent power, power factor (cos Ï•))
- fault warning;
- remote load on and off via RS***2/RS**5 interface or and external switch.