The multi-functional VMD420 series voltage relay is designed to monitor the frequency, undervoltage and overvoltage and the voltage between two threshold values in 3(N)AC 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 devices require an external supply voltage.
The multi-functional VMD420 series voltage relay is designed to monitor the frequency, undervoltage and overvoltage and the voltage between two threshold values in 3(N)AC 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 devices require an external supply voltage.
Type | Supply voltage US* | Nominal system voltage Un* | Art. No.** |
---|---|---|---|
VMD420-D-1 | AC 16…72 V / DC 9,6…94 V, 15…460 Hz | 3(N)AC 0…500 V / 288 V 15…460 Hz | B73010005 B93010005 |
VMD420-D-2 | AC/DC 70…300 V, 15…460 Hz | 3(N)AC 0…500 V / 288 V, 15…460 Hz | B73010006 B93010006 |
* absolute values
**(B7… = push-wire terminal / B9… = screw-type terminal)
Type | Art. No. |
---|---|
Mounting clip for screw mounting (one piece per device) | B98060008 |
Mounting frame XM420 | B990994 |
Category | Name | Size | Language | Timestamp | D-/B-Number |
---|---|---|---|---|---|
Certificates | TÜV NORD - isoHV42x, AGH42x, isoHV52x, isoRW42x und VMx420 | 431.9 KB | DE | 2023/01/12 14:46:3012.01.2023 14:46:30 | |
Certificates | TÜV NORD - isoHV42x, AGH42x, isoHV52x, isoRW42x and VMx420 | 411.7 KB | EN | 2023/01/12 14:46:3512.01.2023 14:46:35 | |
Declarations of Conformity | UKCA - VMx42x | 141.7 KB | 2022/12/20 06:00:2220.12.2022 06:00:22 | ||
CE Declarations of Conformity | VMx42x | 93.7 KB | 2022/11/04 09:31:2004.11.2022 09:31:20 | ||
Manuals | VMD420 | 5.7 MB | EN | 2022/06/09 10:48:1209.06.2022 10:48:12 | D00137 |
Datasheets | VMD420 | 372.2 KB | EN | 2022/08/10 05:51:4410.08.2022 05:51:44 | D00137 |
Quickstarts | VMD420 | 998.0 KB | EN | 2022/06/09 10:52:1309.06.2022 10:52:13 | D00137 |
Datasheets | XM420 interface options | 223.5 KB | EN | 2019/05/13 10:31:3613.05.2019 10:31:36 | D00051 |
Technical Information | Changed variants of relays from goldplated to silver-plated contacts | 166.3 KB | EN | 2022/06/27 09:03:0827.06.2022 09:03:08 |