Power Measurement Including Differential Current Measurement - Beckhoff EL34 Series Documentation

7.6 Power measurement including differential current
measurement
• The voltage is measured via connections L1, L2, L3 and N.
• The current is measured via three or four current transformers [} 29] and the connections I
I , I and I , I
L3 L3' N N'.
WARNING: Risk of electric shock!
Bring the Bus Terminal system into a safe, voltage-free state before starting mounting, disassembly or
wiring of the Bus Terminals!
Fig. 168: Common wiring of the EL3453 power measurement terminal
In the following diagram, the current measuring channel I
EL34xx
WARNING
is used to measure the neutral conductor current.
N
Version: 1.5
Application examples
, I , I , I ,
L1 L1' L2 L2'
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