382090 382091 V4.0 09/07
21
Electrical Specifications
Accuracy:
±
(% of r number of digits) at 64
to 82
o
F (18
to 28
o
C) with relative
humidity to 80%
AC Voltage True rms measurements (V)
Range
Resolution
Accuracy
Input
impedance
Overload
protection
Nominal
frequency
999.9V
0.1V
± (0.5%rdg + 10d)
(>80V)
2M
Ω
1000Vrms
50Hz (382091)
60Hz (382090)
Note: Minimum Voltage; 50V (0V displayed below 50V)
•
Display: RMS voltage value for each channel
AC Current True rms Measurement (A) Autoranging
Ranges
Resolution
Accuracy
(including current
probe)
Current probe
output
Overload
protection
Nominal
frequency
250.0A
500.0A
999.9A
0.1A
±(2%rdg + 20d)
0.35mV/A
1000Arms
50Hz (382091)
60Hz (382090)
Note: Minimum Current; 3A (0A displayed below 3A)
•
Display: RMS current value for each channel
Active Power measurement P (KW)
Range
Resolution Accuracy
(PF=1)
Power factor influence (PF=0.5)
999.9KW
0.1KW
± (1.5%rdg + 20d)
± (1%rdg + 10d)
•
Display: Active power of each channel and the sum of multiple channels
•
Polarity display: For influx (consumption) no symbol; For outflow (regenerative) “ - ” sign
Apparent Power measurement S (KVA)
Range
Resolution Accuracy
(PF=1)
Power factor influence (PF=0.5)
999.9KVA
0.1KVA
± (1.5%rdg + 20d)
± (1%rdg + 10d)
•
Measurement method: Calculated from RMS voltage U and RMS current I.
•
Displays: Apparent power of each channel and the sum of multiple channels.
•
Polarity display: Positive assumed
Reactive Power measurement Q (KVAR)
Range
Resolution Accuracy
(PF=1)
Power factor influence
(PF=0.5)
999.9KVAR
0.1KVAR
± (1.5%rdg + 20d)
± (1%rdg + 10d)
•
Measurement method: Calculated from apparent power S and active power P.
•
Displays: Reactive power of each channel and the sum of multiple channels.
•
Polarity display: For phase lag (LAG) current is behind voltage: No symbol. For LEAD
phase (LEAD: current ahead of voltage): “-” sign
