3-phase power measurement terminal, Economy EL3423
L3 error
L2 error
L1 error
System OK
L3 OK 
L2 OK 
L1 OK 
Run LED 
Top view 
Contact assembly 
extended temperature range

EL3423 | 3-phase power measurement terminal, Economy

The EL3423 EtherCAT Terminal enables the measurement of relevant data for an efficient energy management system. The voltage is measured internally via direct connection of L1, L2, L3 and N. The current of the three phases L1, L2 and L3 is fed via simple current transformers. The measured energy values are available separately as generated and accepted values. In the EL3423 Terminal, the effective power and the energy consumption for each phase are calculated. In addition, an internally calculated network quality factor provides information about the quality of the monitored voltage supply. The EL3423 offers basic functionality for mains analysis and energy management.

Technical data EL3423
Number of inputs 3 x current, 3 x voltage
Technology 3-phase energy measurement
Oversampling factor
Distributed clocks
Update interval > 10 s
Update time net-synchronous
Measured values energy, power, power quality factor
Measuring voltage max. 480 V AC 3~ (ULX-N: max. 277 V AC/240 V DC)
Measuring current max. 1 A (AC/DC), via measuring transformers x A/1 A
Measuring error 0.5 % relative to full scale value (U/I), 1 % calculated value
Monitoring function phase order, phase failure, phase asymmetry, undervoltage/overvoltage (adjustable)
Electrical isolation 2500 V
Current consumption power contacts
Current consumption E-bus typ. 120 mA
Special features mains monitoring, single-phase operation possible
Weight approx. 75 g
Operating/storage temperature -25…+60 °C/-40…+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
Related products
EL3443 3-phase power measurement terminal with extended functionality
EL3483 3-phase grid status terminal for voltage, frequency and phases