The voltage relays of the VME420 series are designed to monitor the frequency, undervoltage, overvoltage and the voltage between two threshold values (window discriminator function) 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 leading to the activation of the alarm relays will be stored. Due to adjustable response times, installationspecific characteristics, such as device-specific start-up procedures, short-time voltage fluctuations, etc. can be considered. Device version VME420 requires an external supply voltage.
The voltage relays of the VME420 series are designed to monitor the frequency, undervoltage, overvoltage and the voltage between two threshold values (window discriminator function) 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 leading to the activation of the alarm relays will be stored. Due to adjustable response times, installationspecific characteristics, such as device-specific start-up procedures, short-time voltage fluctuations, etc. can be considered. Device version VME420 requires an external supply voltage.
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)
Type | Art. No. |
---|---|
Mounting clip for screw mounting (one piece per device) | B98060008 |
Mounting frame XM420 | B990994 |