382090 382091 V4.0 09/07
21
Electrical Specifications
Accuracy: ± (% of reading + 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)
2MΩ 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
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