Amprobe ACD-51HP Power-Quality-Clamp-Ons - Manual (Page 22)

ACD-51HP - ACD-56HPQ
4.3.8. Power measurements on single phase systems
WARNING
The maximum input for Voltage measurements is 600V. Do not attempt to
take any voltage measurement exceeding the limits indicated in this manual.
Exceeding the limits could cause electrical shock at the operator and
damages to the clamp meter.
Fig. 12: power and energy measurement on single phase systems
1. Select the “
W ” position.
2. Open the jaws and clamp only one cable. Pay attention to the alignment marks (see
paragraph 4.1.2. and Fig. 12).
3. Insert the red plug into V/ Ω jack and the black plug into COM one.
4. Connect the test leads to the circuit under test (see Fig. 12). The measured active
power value and the symbol “AC” are displayed.
5. If the symbol " " is displayed the input voltage and/or current value is higher than the
instrument’s full scale. Therefore the power and power factor values could be incorrect.
6. By pressing the FUNC key the following parameters are shown:
• Active power (kW);
• Reactive power (kVA R , capacitive C, inductive I);
• Apparent power (kVA);
• Power factor (Pfi or Pfc for inductive and capacitive respectively).
7. If reading the display is difficult, press the D-H key to hold the value. To disable this
function press D-H key again.
8. If the measuring in a dark environment, press and hold the key for at least 1 second
to activate the backlight. It automatically turns OFF after 5 seconds.
By pressing and holding the MAX/MIN/PK key for at least 1 second, the instrument
activates the maximum (MAX), minimum (MIN) and average (AVG) measurements. All
these values are continually updated even if only one of them is displayed. With a simple
MAX/MIN/PK key press the values are cyclically displayed. To escape this function press
and hold the MAX/MIN/PK key at least for 1 second or turn the selector to any position.
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