X20 system modules • Analog input modules • X20AP31x1
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X20 system User's Manual 3.10
Connection example 3 - Mains C
This example involves a 3-element, 3-phase, 3-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
optional
Figure 132: Supported mains configuration C
Connection example 4 - Mains D
This example involves a 3-element, 3-phase, 4-line star measurement with 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 133: Supported mains configuration D
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