DIGITAL UNDER-OVER VOLTAGE RELAY DMPVR SERIES
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1 DIGITAL UNDER-OVER VOLTAGE RELAY
2 Features User friendly setting Parameters Monitor the line to line voltages continuously Built in on delay and trip delay time settings Field configurable reset gap voltage Direct display of line to line voltages in 3 Phase models Set value of Under Voltage (UV) and Over Voltage (OV) in terms of Set voltage directly Phase fail and phase reversal protection in 3 phase models Indication of faults through LED and LCD Independent potential free output contacts for Under Voltage (UV)/ph. fail,ph reversal and Over Voltage(OV) Applications Protection of Synchronous and induction motor of any HP Rating Protection of Generators, AMF switched Board Transformer Feeder Panel Distribution Boards Voltage Regulators Protection of UPS and Single phase application Specifications 1. Under Voltage Range:- 070V to 105V in steps of 1V for 110V L-L (Un) 300V to 410V in steps of 1V for 415V L-L (Un) 150V to 230V in steps of 1V for 240V P-N (Un) 2. Under Voltage trip time: to 20 sec in steps of 0.1 sec 3. Over Voltage (OV) Range:- 115V to 140V in steps of 1V for 110V L-L (Un) 420V to 500V in steps of 1V for 415V L-L (Un) 250V to 300V in steps of 1V for 240V P-N (Un) 4. Over Voltage (OV) trip time:- 0.1 to 20 sec in steps of 0.1 sec 5. Reset gap for Under Voltage (UV)/Over Voltage (OV):- 5 to 20V in steps of 5V 6. On Time delay: - 1 to 30 sec in steps of 1sec 7. Trip time for phase fail & phase reversal: 2 sec 8. Auxiliary supply VAC/DC Note: Under Voltage (UV) Relay energize /de energize option for factory setting, Default: Under Voltage (UV) De Energize Over Voltage (OV) Relay energize /de energize option for factory setting, Default: Over Voltage(OV) De Energize
3 SETTING PROCEDURE * Refer to the wiring diagram. Connect the Aux supply (85-275V AC/DC) & 3 Phase sensing voltage to the DIGITAL MICROCONTROLLER BASED THREE PHASE OVER VOLTAGE (OV) AND UNDER VOLTAGE (UV). Display shows for a while. Vltg Rly 3PH V2.0 And then display line to neutral voltages VRY VYB VBR L-L 400 V L-L Press key & key simultaneously and release display shows- menu for Over Voltage (OV) Select the desired Over Voltage (OV) in the range of 420 to 500v OV =460V V Use or key to enter the required Over Voltage (OV) voltage directly in steps of 1V, press SET key to save the value and move on to the next parameter. Now display shows -menu for Under Voltage Select the desired Under Voltage in the range of 300 to 410V UV =360V V Use or key to enter the required Under Voltage (UV) voltage directly in steps of 1V, press SET key to save the value and move on to the next parameter. Now Display shows - menu for Reset Gap for Over Voltage (OV)/Under Voltage (UV)( RG - Reset Gap) RG=05.0V 5-20V Use or key to enter the required Reset Gap voltage value in steps of 5V, press SET keyto save the value and move on to the next parameter. Display shows -menu for On Time Delay for OD( OD- On Time Delay) OD = 10 S 1-30 S Use or key to enter the required On delay in steps of 1 S, press SET key to save the value and move on the next parameter. Display shows - menu for Time delay for Under Voltage (UV)( UTT- Under Voltage Trip Time) Use or key to enter the required Trip delay for Under Voltage (UV) in steps of 0.1 S, press SET key to save the value and move on the next parameter UTT = S Display shows menu for Time delay for Over Voltage (OV)( OTT- Over Voltage (OV)er Voltage Trip Time) OTT = S Use or key to enter the required Trip delay for Over Voltage (OV) in steps of 0.1 S, press SET key to save the value. Display shows all the three phase voltages.( when all 3phase sensing voltages are connected) V L-L This completes the setting of the voltage relay. In the absence of sensing input voltages display shows by indicating the Under Voltage (UV) LEDIf the sensing voltage input VRY, VYB, VBR UV TRIP BR< 25
4 Mechanical Dimensions DIGITAL MICROCONTROLLER BASED THREE PHASE OVER VOLTAGE (OV) AND UNDER VOLTAGE (UV) RELAY FLUSH MOUNTING DIN MOUNTING
5 Wiring Diagram DIGITAL MICROCONTROLLER BASED THREE PHASE OVER VOLTAGE (OV) AND UNDER VOLTAGE (UV) RELAY FLUSH MOUNTING MCCB/ACB/CONTACTORS DIN MOUNTING MCCB/ACB/CONTACTORS
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DIGITAL UNDER-OVER VOLTAGE RELAY DMPVR SERIES
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