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BENDER GmbH & Co KG
LINETRAXX® VME421H

LINETRAXX® VME421H

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LINETRAXX® VME421H

Product catalog summary

Device Features

Monitors undervoltage and overvoltage in AC/DC systems within 15-460 Hz frequency range.
Two device variants: -1 (9.6-150 V) and -2 (70-300 V).
Automatic response value setting for voltage and frequency.
Operates without external supply voltage, with integrated energy backup.
Displays system frequency and allows for adjustable switching hysteresis.
Features alarm indication via LEDs and changeover contacts.
Includes password protection and fault memory options.

Product Description

The LINETRAXX® VME421H is a voltage monitor for AC/DC systems, detecting undervoltage, overvoltage, underfrequency, and overfrequency. It operates without a separate supply voltage, drawing power from the monitored system. Custom parameter settings are required to meet local standards.

Typical Applications

Monitoring single-phase machines and electrical installations.
Earth fault monitoring in medium-voltage systems.
Battery system monitoring.
Switching machinery based on voltage levels.

Functionality

The device features a start-up delay and two adjustable measuring channels. It triggers alarms when set thresholds are exceeded or not met, with configurable response and release delays. The fault memory retains alarm states until manually reset.

Technical Specifications

Insulation coordination: Rated insulation voltage of 250 V and impulse voltage of 4 kV.
Measuring range: Variant -1 (0-150 V), Variant -2 (0-300 V).
Response values: Adjustable for both voltage and frequency with specific preset functions.
Time response: Configurable delays for start-up, response, and release.
Environmental conditions: Operating temperature from -25 to +55 °C, with specific EMC and mechanical condition classifications.
Connection: Options for screw-type or push-wire terminals with specified connection properties.

Approvals and Standards

The device complies with various IEC standards for safety, EMC, and environmental conditions.

Ordering Information

Available in two variants with different voltage ranges, each with options for screw-type or push-wire terminals.

Catalog excerpts

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

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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...

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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:...

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

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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...

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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

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LINETRAXX® VME421H

LINETRAXX® VME421H

Catalog excerpts

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