382090 382091 V4.0 09/07
22
Power Factor measurement (COS
ψ
)
Range Resolution Accuracy
-1 ~ 0 ~ +1
0.001
± (3%rdg + 30d)
•
Measurement method: Calculated from apparent power S and active power P.
•
Displays: Power factor of each channel and the sum of multiple channels.
•
Polarity display: For phase lag (LAG) current is behind voltage: No symbol; for phase
lead (LEAD) current is ahead of voltage: “-” sign
Phase angle measurement (
ψ
)
Range Resolution
Accuracy
±11° to 90°
0.1°
>50A: ± 3°+ 30digits,
25 to 50A: ± 4° + 40digits
(<25A unspecified)
•
Measurement method: Calculated from power factor COS
ψ
•
Display item: Phase angle of each channel and the sum of multiple channels.
•
Polarity display: For phase lag (LAG: current is behind voltage): No symbol. For phase
lead (LEAD: current is ahead of voltage): “-”.
Frequency measurement (Hz)
Range
Resolution Accuracy
Measurement source
60HZ
0.01Hz
±
(0.5%rdg + 1d)
Voltage U1 > 80V
•
Measurable input range : > 30V
Three Phase Sequence Detection
Input voltage range
Normal phase indication Reverse phase indication
Meas. source
3P > 30V
U1, U2 and U3
Active Power Energy measurement (KWh)
Range
Resolution
Active power
accuracy
Timer interval
Timer Accuracy
3.999KWh 0.001KWh
± (1.5%rdg + 20d)
1 sec
± 50ppm at 77
o
F
(25
o
C)
39.99KWh 0.01KWh
399.9KWh 0.1KWh
3.999MWh 0.001MWh
39.99MWh 0.01MWh
119.3MWh 0.1MWh
•
Measurement display: Displays total active power consumption
Apparent Power Energy measurement (KVAh)
Range
Resolution
Apparent power
accuracy
Timer interval
Timer Accuracy
3.999KVAh 0.001KVAh
± (1.5%rdg + 20d)
1 sec
± 50ppm at 77
o
F
(25
o
C)
39.99KVAh 0.01KVAh
399.9KVAh 0.1KVAh
3.999MVAh 0.001MVAh
39.99MVAh 0.01MVAh
119.3MVAh 0.1MVAh
•
Measurement display: Displays total apparent power energy (sum of absolute values).
