3-phase mains monitoring terminal for voltage, frequency and phase EL3483
L3 error
L2 error
L1 error
System OK
L3 OK 
L2 OK 
L1 OK 
Run LED 
Top view 
Contact assembly 

EL3483 | 3-phase mains monitoring terminal for voltage, frequency and phase

The EL3483 EtherCAT Terminal enables the monitoring of relevant electrical data of the supply network. The voltage is measured internally via direct connection of L1, L2, L3 and N. The internal measured values are compared with threshold values preset by the user. The result is available as digital information in the process image. The EL3483 checks for the correct phase order L1, L2, L3, phase failure, undervoltage and overvoltage, and possible phase asymmetry. An error bit is set in the case of an incorrect phase order or the failure of a phase. Should, for example, an asymmetry or voltage error occur, only a warning bit is set initially. In addition, an internally calculated mains quality factor provides information about the quality of the monitored voltage supply. The EL3483 offers basic functionality for mains monitoring and analysis.

Technical data EL3483
Number of inputs 3 x voltage
Technology 3-phase mains monitor
Oversampling factor
Distributed clocks
Update interval ten mains periods (200 ms at 50 Hz)
Measured values digital threshold values
Measuring voltage max. 480 V AC 3~ (ULX-N: max. 288 V AC/DC)
Measuring procedure true RMS
Update time net-synchronous
Electrical isolation 1500 V
Current consumption power contacts
Special features operation as voltage monitor, frequency monitor and phase monitor, optionally in single-phase operation
Monitoring function phase order, phase failure, phase asymmetry, undervoltage/overvoltage (adjustable)
Operating/storage temperature 0…+55 °C/-25…+85 °C
Relative humidity 95 %, no condensation
Vibration/shock resistance conforms to EN 60068-2-6/EN 60068-2-27
EMC immunity/emission conforms to EN 61000-6-2/EN 61000-6-4
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