Power Measurement; Power Measurement On A Machine; Power Measurement On Two Motors Regulated By Frequency Converters; Figure 17: Power Measurement On A Machine - WAGO 750-494 Series Manual

76 Connect Devices
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7.4

Power Measurement

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7.4.1

Power Measurement on a Machine

For measuring power, all of the eight CAGE CLAMPS
according to the figure below.
Do not confuse current and voltage clamps!
When making the connections do not confuse the current and voltage paths, as
connecting the phase voltages directly to the low impedance current clamps IL1
... IL3 shall destroy the I/O module!

Figure 17: Power Measurement on a Machine

Negative power values!
If you measure negative power values, check the connection of the associated
current transformer circuit in the proper direction.
7.4.2 Power Measurement on Two Motors Regulated by
Frequency Converters
The example here illustrates power measurement on two 3-phase motors regulated
by a frequency converter (ac power converter) used e. g. in a conveyor system.
Each of these motors is monitored by a 3-phase power measurement module.
WAGO-I/O-SYSTEM 750
750-494 3-Phase Power Measurement Module
®
have to be connected
Manual
Version 1.2.0