3-phase power measurement terminal EL3403
L3 error
L2 error
L1 error
Phase OK
L3-OK 
L2 OK 
L1 OK 
Run LED 
L1
L2
L3
N
IL1
IL2
IL3
IN
Top view 
Contact assembly 
extended temperature range
extended shock and vibration range

EL3403 | 3-phase power measurement terminal

The EL3403 EtherCAT Terminal enables the measurement of all relevant electrical data of the supply network. The voltage is measured via the 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 EL3403 version, the effective power and the energy consumption for each phase are calculated. The root-mean-square value of voltage U, current I and the effective power P, apparent power S, reactive power Q, frequency F and phase shift angle cos φ can be derived. The EL3403 provides a comprehensive network analysis and an energy management option.

Technical data EL3403 | ES3403
Number of inputs 3 x current, 3 x voltage
Technology 3-phase power measurement for alternating voltages
Oversampling factor
Distributed clocks
Resolution 1 µA, 0.1 mV, 10 mW
Conversion time mains-synchronous
Measured values current (I1, I2, I3), voltage, effective power, reactive power, apparent power, energy, cos φ, frequency
Measuring voltage max. 500 V AC 3~ (ULX-N: max. 288 V AC)
Measuring current max. 1 A (AC), via measuring transformers x A/1 A
Measuring error 0.5 % relative to full scale value (U/I), 1 % calculated value
Measuring procedure true RMS
Update time net-synchronous
Electrical isolation 1500 V
Current consumption power contacts
Current consumption E-bus typ. 120 mA
Bit width in the process image 62 byte PM input, 3 byte PM output
Special features true RMS value calculation, single-phase operation also 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
Protect. class/installation pos. IP 20/variable
Pluggable wiring for all ESxxxx terminals
Approvals CE, UL
Special terminals
EL3403-0010 3-phase power measurement terminal, 500 V AC, 5 A
EL3403-0026 3-phase power measurement terminal, 500 V AC, 1 A, without EMC bybass capacitor between N and DIN rail
EL3403-0100 3-phase power measurement terminal, 500 V AC, 100 mA
EL3403-0111 3-phase power measurement terminal, 500 V AC, one current input for each measurement range: 10 mA, 100 mA and 1,000 mA
EL3403-0333 3-phase power measurement terminal, max. 500 V AC 3~, for transformers with 333 mV AC