C-LOGIC 8900 User Manual page 11

6. The minimum input voltage is 50V and the minimum input
current is 2nd. If the values are lower than these limits,
"0.00kW" will be displayed as active power instead of the
actual value.
7. Press the SET key for AUTO mode and press the () / ()
keys to adjust the voltage and current ranges; Press the SET
key to return to normal mode.
8. Press the I key and the current value, peak current value
and frequency will be shown on the bottom line of the
display.
9. Press the U key and the voltage value, the peak voltage
value and the frequency will be shown on the bottom line of
the display.
10. Press the REC / SAVE key to display the MAX and MIN
values.
11. Reactive power is not a directly measured value; the
equation for its calculation is kVAr2 = kVA2-kW2; the value is
calculated by programming based on the measured voltage,
current and active power and is displayed on the LCD
screen.
Measurement of cosᴓ, sinᴓ and phase angle
1. Set the thumbwheel to position ᴓ (1 phase) and connect
the test leads to terminals V1 and V2.
2. The clamp will automatically measure and display the
value of power factor, voltage and current.
3. Press the WATT key to display the phase angle, power
factor (cosᴓ) and sinᴓ; A negative power factor means that
the measured load is capacitive in nature.
4. Press the I key and the current value, peak current and
frequency will be displayed on the bottom line of the display.
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5. Press the U key and the voltage value, the voltage peak
and the frequency will be displayed on the bottom line of
the display.
6. Press the REC / SAVE key to display the MAX and MIN
values.
7. Press the SET key for AUTO mode and press the keys
- to adjust the measurement scale for voltage and
current; Press the SET key to return to normal mode.
8. After the measurement, press the HOLD key to keep the
reading on the screen and press the REC / SAVE key to
show the memory location where to save it and press the
SET key to confirm and return to the main menu.
Single-phase 3-wire circuit
The procedure for measuring power and power factor in
single-phase three-wire circuits is the same as for single-
phase two-wire circuits, where the black crocodile is
connected to the neutral line and the red crocodile and
the current jaw are connected. to the other two cables.
Red
Black
1PHASE
Black
Red
1PHASE
1PHASE
3 PHASE
HARM
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