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 
Top view 
Contact assembly 
extended temperature range

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 EL3443-0010
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)
Measured values current, voltage, effective power, reactive power, apparent power, active energy, reactive energy, apperent energy, cos φ, frequency, THD, harmonic (up to 40th harmonic)
Measuring voltage max. 480 V AC 3~ (ULX-N: max. 288 V AC/DC)
Measuring current max. 1 A (AC/DC), via measuring transformers x A/1 A max. 5 A (AC/DC), via measuring transformers x A/5 A
Measuring error 0.2 % relative to full scale value (U/I),
0.4 % calculated values (see documentation)
Update time net-synchronous
Electrical isolation 1500 V
Current consumption power contacts
Special features single-phase operation possible, mains monitoring functionality, precise detection of zero voltage crossing
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
Related products
EL3423 3-phase energy measurement terminal Economy
EL3483 3-phase grid status terminal for voltage, frequency and phases
Product announcement
estimated market release 1st quarter 2018