GW Instek APS-1102A User Manual - Manual (Page 160)

APS-1102A User Manual
APS-1102A 5-26
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 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 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 current)
5.4.4 Load power factor measurement
Calculated by effective power/apparent power
In the case that it exceeds the measurement range, “
 ” is displayed.

Measurement range: 0.00 to 1.00

Display resolution: 0.01