24
Device Description
WAGO-I/O-SYSTEM 750
750-494 3-Phase Power Measurement Module
Manual
Version 1.2.0
3.6.4
Measured Values
Table 11:
Technical Data ‒
Measured Values
Measuring procedure
Calculation of true RMS for voltages
and currents, sample rate 8 kHz
synchronous on all 6 measuring inputs,
24 bits resolution
Calculated values
Phase-to-phase voltages, powers,
energies, power factors, network
frequencies, harmonics analysis up to
the 41st harmonic
Update cycle of process data
RMS voltage Lx-N
40 ms
Min./max. RMS voltage Lx-N
50 ms
RMS voltage Lx-Ly
340 ms
Arithmetic mean value voltage Lx-N To be set, 5 ... 900 s
Peak value voltage Lx-N
200 ms
RMS current Lx
40 ms
Min./max. RMS current Lx
50 ms
Arithmetic mean value current Lx
To be set, 5 ... 900 s
Peak value current Lx
200 ms
Active power Lx
40 ms
Min./max. active power Lx
50 ms
Reactive power Lx
340 ms
Apparent power Lx
40 ms
All energy values
400 ms
Supply network frequency Lx
280 ms
Min./max. frequency of supply
network Lx
280 ms
Phase angle phi Lx
340 ms
Power factor cos phi Lx
340 ms
Power factor PF Lx
280 ms
Power factor LF Lx
280 ms
Harmonics analysis
•
Current
260 ms
•
Voltage
260 ms
•
HD/THD current
260 ms
•
HD/THD voltage
260 ms
DC voltage Lx-N
40 ms
DC current Lx
40 ms
Power (DC current) Lx
40 ms
Measuring errors
AC voltage
<= 0.3 % of full-scale value
(<= 0.5 % for 750-494/025-xxx)
AC current
<= 0.5 % of full-scale value