102 Connect Devices
WAGO-I/O-SYSTEM 750 XTR
750-495/040-00x 3-Phase Power Measurement Module 690 V
Manual
Version 1.2.0
In the event of negative power values, verify correct connection of voltage
transformer, current transformer or Rogowski coil
In the event of negative power values, verify correct connection of voltage
transformer, current transformer or Rogowski coil.
Note the following for measurement of supply voltage:
- Before connecting the power network to the I/O module, determine the
topology and grounding of the power network on which measurement is to be
performed.
- When voltage transformers are used, it is essential for the N connection of the
I/O module to be grounded.
- The properties of the voltage transformers used directly affect the
measurement accuracy that can be achieved.
You can find information on the possible connection diagrams in the sections
“Power Measurement with 4-Wire Connection on Y Networks” and “Power
Measurement with 3-
Wire Connection on Y/Δ Networks.”
Voltage transformers are available on the market in different forms and accuracy
classes depending on the nominal voltage. Manufacturers are e. g.:
https://mbs-ag.com/en/product-range/
https://www.gegridsolutions.com/ITI/
- IME:
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