Multifunctional Three Phase Voltage Monitoring Relay

Multifunctional Three Phase Voltage Monitoring Relay performs the following functions:
Voltage level monitoring and effective faults protection;
Control of correct phase sequence, phase loss and phase coincidence;
Phase imbalance control (control of full phase power load and phase symmetry);
Turning the power load OFF by operating with output contacts in case of unallowable mains voltage parameters.
User adjusted Tripping time delay is in the range 0-10 sec (Toff);
Mains voltage monitoring after tripping and automatic turning ON the power load when the voltage parameters return back to normal conditions.
Autoreclosing time delay is adjusted by user in the range 0-600 seconds
Alarm indication in case of voltage faults and indication of voltage presence on each phase
Using toggle switch RNPP-311M user may select the type of the power circuit (380V or 415V) and the set of optionally performed functions using toggle switches.
It is possible to adjust the RNPP-311M to operate in following modes:
complete voltage parameters monitoring;
MIN/MAX voltage level monitoring;
MIN voltage monitoring;
MAX voltage monitoring;
correct phase sequence monitoring and phase coincidence control;
imbalance control of voltage presence on each phase is being performed at any position of 5-8 switches, even if all of them are set to OFF position.
RNPP-311M is supplied ready to use and doesna t require any special start up procedures due to the use of microprocessor.