LINETRAXX® VME420
- Multi-functional monitoring relay for overvoltage, undervoltage, overfrequency, and underfrequency
- Works on single-phase AC and DC systems up to 300 V
- Digital display with real-time reading
- Multiple time delays available (on startup, on trigger, on reset)
- Two Form-C (SPDT) alarm contacts, configurable to trigger on any combination of alarms
The VME420 series voltage relays are designed to monitor the frequency, undervoltage, overvoltage and the voltage between two threshold values in AC and DC systems. The voltages are measured as r.m.s. values. The currently measured value is continuously shown on the LC display. The measured value required to trigger the alarm relay is stored. Due to adjustable response times, installation-specific characteristics, such as device-specific start-up procedures, short-time voltage fluctuations, etc. can be considered. The relays require an external supply voltage.
- Multi-functional monitoring relay for overvoltage, undervoltage, overfrequency, and underfrequency
- Works on single-phase AC and DC systems up to 300 V
- Digital display with real-time reading
- Multiple time delays available (on startup, on trigger, on reset)
- Two Form-C (SPDT) alarm contacts, configurable to trigger on any combination of alarms
The VME420 series voltage relays are designed to monitor the frequency, undervoltage, overvoltage and the voltage between two threshold values in AC and DC systems. The voltages are measured as r.m.s. values. The currently measured value is continuously shown on the LC display. The measured value required to trigger the alarm relay is stored. Due to adjustable response times, installation-specific characteristics, such as device-specific start-up procedures, short-time voltage fluctuations, etc. can be considered. The relays require an external supply voltage.
Features
- Monitoring AC/DC systems for undervoltage, overvoltage and frequency in the voltage range of 0…300 V
- Various monitoring functions selectable < U, > U, < f, > f
- Start-up delay, response delay and delay on release
- Adjustable switching hysteresis
- r.m.s. value measurement (AC+DC)
- Digital measured value display via multi-functional LC display
- Preset function (automatic setting of basic parameters)
- LEDs: Power On, Alarm 1, Alarm 2
- Measured value memory for operating value
- Continuous self monitoring
- Internal test/reset button
- Two separate alarm relays (one changeover contact each)
- N/C or N/O operation and fault memory behaviour selectable
- Password protection for device setting
- Sealable transparent cover
- Two-module enclosure (36 mm)
- Push-wire terminal (two terminals per connection)
- RoHS compliant
Applications
- Single-phase voltage and frequency monitoring of machines and electrical installations
- Earth fault monitoring in medium-voltage systems via voltage transformers
- Monitoring of battery systems
- Switching on and switching off at a certain voltage level
LINETRAXX® VME420 Variant(s)
| Type | Supply voltage US* | Nominal system voltage Un* | Art. No.** |
|---|---|---|---|
| VME420-D-1 | DC 9,6 V…94 V / AC 16…72 V, 15…460 Hz | AC/DC 0…300 V / 15…460 Hz | B73010001 B93010001 |
| VME420-D-2 | DC 70…300 V / AC 70…300 V, 15…460 Hz | AC/DC 0…300 V / 15…460 Hz | B73010002 B93010002 |
* absolute values
**(B7… = push-wire terminal / B9… = screw-type terminal)
Optional Accessories for LINETRAXX® VME420
| Type | Art. No. |
|---|---|
| Mounting clip for screw mounting (one piece per device) | B98060008 |
| Mounting frame XM420 | B990994 |
Downloads for LINETRAXX® VME420
| Name | Category | Size | Language | Timestamp | D-/B-Number |
|---|---|---|---|---|---|
| TÜV NORD - isoHV42x, AGH42x, isoHV52x, isoRW42x und VMx420 | Certificates | 436.9 KB | DE | 2024/06/2626.06.2024 | |
| TÜV NORD - isoHV42x, AGH42x, isoHV52x, isoRW42x and VMx420 | Certificates | 416.9 KB | EN | 2024/06/2626.06.2024 | |
| UKCA - VMx42x | Declarations of Conformity | 156.3 KB | 2024/10/0707.10.2024 | ||
| VMx42x | CE Declarations of Conformity | 104.6 KB | 2024/10/0707.10.2024 | ||
| VME420 | Manuals | 1.8 MB | EN | 2021/09/2222.09.2021 | D00026 |
| VME420 | Datasheets | 363.8 KB | EN | 2022/08/1010.08.2022 | D00026 |
| VME420 | Quickstarts | 810.2 KB | EN | 2024/05/2323.05.2024 | D00026 |
| XM420 interface options | Datasheets | 223.5 KB | EN | 2019/05/1313.05.2019 | D00051 |
| Changed variants of relays from goldplated to silver-plated contacts | Technical Information | 166.3 KB | EN | 2022/06/2727.06.2022 |