3-phase power measurement terminal up to 690 V AC with extended functionality EL3453
L3 OK, L3 Error
L2 OK, L2 Error
L1 OK, L1 Error
Run, System
IN OK, IN Error 
IL3 OK, IL3 Error 
IL2 OK, IL2 Error 
IL1 OK, IL1 Error 
Current
measurement IL1
Current
measurement IL2
Current
measurement IL3
Current
measurement IN
L1
L2
L3
N
Top view 
Contact assembly 

EL3453 | 3-phase power measurement terminal up to 690 V AC with extended functionality

The EL3453 EtherCAT power measurement terminal is an advancement based on the EL3413. With up to 690 V AC, the voltage inputs are optimised for the direct monitoring of high-capacity generators, as in the wind power industry, for example. No upstream voltage transformer is required. The four current inputs are electrically isolated so that the terminal can be used in all common grounded current transformer configurations such as 2- or 3-transformer configurations with star or delta connection incl. neutral conductor current measurement. The EL3453 can be used for simple grid analysis up to the 63rd harmonics analysis. Alternatively, all readings can be combined in a power quality factor for simplified diagnostics. Like all measured terminal data, the harmonic content can be read via the process data.

Technical data EL3453
Number of inputs 4 x current, 3 x voltage
Technology 3-phase power measurement
Oversampling factor
Distributed clocks optional
Update interval half mains period (10 ms at 50 Hz)
Update time net-synchronous
Measured values current, voltage, effective, reactive and apparent power, active, reactive and apparent energy, cos φ, frequency, THD, harmonic (up to 63rd harmonic)
Measuring voltage max. 690 V AC 3~ (ULX-N: max. 400 V AC)
Measuring current adjustable, 100 mA, 1 A (default), 5 A; potential-free
Measuring error 0.3 % relative to full scale value (U/I), 0.6 % calculated values (see documentation)
Monitoring function phase order, phase failure, phase asymmetry, undervoltage/overvoltage (adjustable)
Electrical isolation 4500 V
Current consumption power contacts
Current consumption E-bus typ. 260 mA
Special features mains monitoring, precise detection of zero voltage and zero current crossing, single-phase operation possible
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
Approvals/markings CE