Multi-functional monitoring relay for undervoltage, overvoltage and frequency monitoring in AC/DC systems without separate supply voltage

LINETRAXX® VME421H Multi-functional monitoring relay for undervoltage, overvoltage and frequency monitoring in AC/DC systems without separate supply voltage Product description Device features • Undervoltage and overvoltage monitoring of AC/DC systems in the frequency range DC/15...460 Hz device variant -1: 9,6.150 V device variant -2: 70.300 V • Preset function: Automatic response value setting for undervoltage and overvoltage, < U and > U as well as for underfrequency and overfrequency < f and > f • Voltage and frequency monitoring with window discriminator function, < U and • Without external...

Monitoring relay for undervoltage, overvoltage and frequency LINETRAXX® VME421H 1 - Power On LED "ON" (green); lights when supply voltage is applied and flashes in the event of system fault alarm 2 - Alarm LED "AL1" (yellow), lights when the set response value >U/<f/>f is exceeded and flashes in the event of system fault alarm 3 - Alarm LED "AL2" (yellow), lights when the value falls below the set response vlaue <U/<f/>f and flashes in the event of system fault alarm Arrow up button: To change the measured value display, move upwards in the menu or to change parameters. To call up the self test:...

Relay for undervoltage, overvoltage and frequency LINETRAXX® VME421H Timing diagram voltage monitoring toff - Delay on release

Monitoring relay for undervoltage, overvoltage and frequency LINETRAXX® VME421H Technical data Insulation coordination acc. to IEC 60664-1/IEC 60664-3 Displays, memory Rated insulation voltage 250 V Rated impulse voltage/overvoltage category 4 kV/III Protective separation (reinforced insulation) between: (U1/+, U2/-) -(11-12-14) -(21-22-24) Supply voltage Us none (internally supplied by Un: 9,6.. .150 V) Supply voltage Us none (internally supplied by Un: 70.300 V) Display range measured value (VME421H-D-1) Display range measured value (VME421H-D-2) Operating uncertainty at 50/60 Hz Operating...

Nominal system voltage 1)Un Screw-type terminal Push-wire terminal Dimension diagram XM421 Dimensions in mm RBENDER The Power in Electrical Safety0 Londorfer StraBe 65 • 35305 GrGnberg • Germany Tel.: +49 6401 807-0 • [email protected] • www.bender.de