X20 system modules • Analog input modules • X20AP31x1
X20 system User's Manual 3.10
309
4.3.14.9 Typical connection examples for different mains configurations
General information
There are many different mains configurations around the world. This section will present a few typical connection
examples.
Connection example 1 - Mains A
This example involves a 3-element, 3-phase, 4-line star measurement with grounded neutral conductor and optional
fault current detection.
I L1a
U N
U L3
U L2
U L1
I L2a
I L3a
I Na
I L1b
I L2b
I L3b
I Nb
L1 L2 L3 N
optional
Figure 130: Supported mains configuration A
Connection example 2 - Mains B
This example involves a 3-element, 3-phase, 3-line star measurement.
I L1a
U N
U L3
U L2
U L1
I L2a
I L3a
I Na
I L1b
I L2b
I L3b
I Nb
L1 L2 L3
Figure 131: Supported mains configuration B
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