User manual

28 Wattmeters
3.3.1Specific reference conditions
DC: AC component 0.1% of the DC signal
AC: Sinusoidal signal (THD < 0.1%)
3.3.2Characteristics in normal and SMOOTH modes
Display range 2 A 10 A (1)
Measuring range 10 mA...1.999 A 2.00...9.99 A
Accuracy for AC 0.5% reading ±2 cts +1 mA 0.5% of reading ±2 cts
Accuracy for DC 1% reading ±3 cts +1 mA 1% of reading ±3 cts
Resolution 1 mA 10 mA
Detection threshold 5 mA 50 mA
Display stability 5 cts in normal mode 2 cts in SMOOTH mode
5 cts in normal mode 2 cts in SMOOTH mode
Response time 500 ms in normal mode
of the digital display 3 s in SMOOTH mode
(1) Above 10 A +5%, the display indicates “OL” .
3.3.3Characteristics in INRUSH mode
Display range A
Measuring range 5 A...65 A (peak values) (1)
Accuracy 10% of reading ±2 counts
Resolution 100 mA
Measurement method RMS value over half-period
Sampling frequency 2 kHz (0.5 ms)
(1) Above 65 A, the display indicates “OL” .
3.4Power measurements
L1
N
W
L1
N
U U
I
I
Fig 4.4.1 Single-phase connection diagram
Chapter III