172 Connect Devices
WAGO-I/O-SYSTEM 750 XTR
750-495/040-00x 3-Phase Power Measurement Module 690 V
Manual
Version 1.2.0
Figure 45: Connection Schematic for 3-Phase Network without Neutral Conductor with Grounding
of a Line Conductor for Power Measurement with the 2-Wattmeter Method for
U
LL
> 400 V
RMS
and u
LL
≤
400 V
RMS
Table 52: Legend for Figure “Connection Schematic for 3-Phase Network without Neutral Conductor
with Grounding of a Line Conductor for Power Measurement with the 2-Wattmeter Method
for U
LL
> 400 V
RMS
and u
LL
≤
400 V
RMS
”
No. Explanation
1 Generator:
Generator or transformer in
∆
connection, with grounding of a line
conductor
2 Loads with impedances (Zx):
- Load connection: in
∆
connection
- Load type: symmetrical or asymmetrical
3 Loads with impedances (Zx):
- Load connection: in Y connection
- Load type: symmetrical or asymmetrical
Note that an asymmetrical load leads to a star point shift in the load.
4 Connection terminal N:
Reference potential for all voltage inputs and differential current inputs