NF EC1000SA, Инструкция по эксплуатации

Страница: 154 / 283

5.4 MEASURE Screen
EC1000SA 5-24
5.4.3 Output power measurement
The output power values described below are always displayed.
a) Effective power
•
Full scale: 1200 W
•
Display resolution: 1 W
•
Measurement accuracy: at 45 Hz to 65 Hz
±
(2% of rdg +1 W)
at DC
±
(3% of rdg +12 W)
(at 23
±
5°C, load with the power factor 0.5 to lower than 1, 50 V or higher
output voltage, output current is 10% to 100% of the maximum output
current)
b) Apparent power
Calculated as output voltage RMS value × output current RMS value
•
Full scale: 1400 VA
•
Display resolution: 1 VA
•
Measurement accuracy: at 45 Hz to 65 Hz
±
(2% of rdg +1 VA)
at DC
±
(3% of rdg +12 VA)
(at 23
±
5°C, 50 V or higher output voltage, output current is 10% to 100%
of the maximum output current)
c) Reactive power Calculated as
( )
apparent power 2-
( )
effective power 2
•
Full scale: 1400 var
•
Display resolution: 1 var
•
Measurement accuracy:
±
(2% of rdg +1 var)
(at 23
±
5°C, load with the power factor 0 to lower than 0.5, 45 Hz to 65 Hz,
50 V or higher output voltage, output current is 10% to 100% of the
maximum output current)