3-phase power measurement terminal with extended functionality EL3443
L3 error
L2 error
L1 error
System OK
L3 OK 
L2 OK 
L1 OK 
Run LED 
L1
L2
L3
N
IL1
IL2
IL3
N
Top view 
Contact assembly 

EL3443 | 3-phase power measurement terminal with extended functionality

The EL3443 EtherCAT Terminal enables the measurement of all relevant electrical data of the supply network and carries out simple pre-evaluation. The voltage is measured 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. All measured currents and voltages are available as root-mean-square values. In the EL3443 terminal, the effective power and energy consumption for each phase are calculated. The RMS values of voltage U and current I as well as the active power P, apparent power S, reactive power Q, frequency f, phase shift angle cos φ and harmonic are available. The EL3443 offers extended functionality for mains analysis and energy management.

Technical data EL3443
Number of inputs 3 x current, 3 x voltage
Technology 3-phase power measurement
Oversampling factor
Distributed clocks optional
Update interval one mains period (20 ms at 50 Hz)
Update time net-synchronous
Measured values current, voltage, effective, reactive and apparent power, active, reactive and apperent energy, cos φ, frequency, THD, harmonic (up to 40th harmonic)
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 0.3 % 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 2500 V
Current consumption power contacts
Current consumption E-bus typ. 120 mA
Special features mains monitoring, precise detection of zero voltage crossing, 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
Ordering information
EL3443 3-phase power measurement terminal with extended functionality, max. 480 V AC 3~/DC, max. 1 A, via measuring transformers x A/1 A
EL3443-0010 3-phase power measurement terminal with extended functionality, max. 480 V AC 3~/DC, max. 5 A, via measuring transformers x A/5 A
EL3443-0011 3-phase power measurement terminal with extended functionality, max. 480 V AC 3~/DC, 100 mA, via measuring transformers x A/100 mA
EL3443-0013 3-phase power measurement terminal with extended functionality, max. 480 V AC 3~/DC, 333 mV, via measuring transformers x A/333 mV
Related products  
EL3423 3-phase energy measurement terminal Economy
EL3483 3-phase grid status terminal for voltage, frequency and phases
Product announcement
EL3443, EL3443-0010: available
EL3443-0011, EL3443-0013: estimated market release 3rd quarter 2019