Power Quality Indicator (378/378 Fc); Ac/Dc Voltage Measurement With Test Leads; Resistance/Continuity - Fluke 377 User Manual

Power Quality Indicator (378/378 FC)

The Power Quality indicator shows that the ratio of the real power
compared to the apparent power or harmonic distortion is outside
the optimal range.
To setup:
1. Turn the control knob to U.
2. Connect the Clamp to ground with the ground lead.
If the total harmonic distortion or the power factor is outside
the optimal range, the related indicator shows on the display:
P
Q
R
Fluke Connect software supports the Power Quality indicator.
The Power Quality indicator sensitivity is adjustable:
Function
High
PQ-Amps 10 % THD
PQ-Volts 8 % THD
PQ-PF 0.9
For information about how to set the sensitivity, see
Options.
Sensitivity
Medium Low
25 % THD 50 % THD
10 % THD 15 % THD
0.75 0.6
Power-On

AC/DC Voltage Measurement with Test Leads

To measure ac or dc voltage:
V
1. Turn control knob to or
2. Connect the black test lead to the COM terminal and the red
X
V
test lead to the terminal.
3. Touch the probes to the test points of the circuit.
The display shows the measurement.
B
Use to toggle on/toggle off the mV function
shown in yellow at the control knob position.

Resistance/Continuity

To measure resistance or continuity:
1. Turn the control knob to
2. Remove power from the circuit to test.
3. Connect the black test lead to the COM terminal and the red
X
V
test lead to the terminal.
4. Touch the probes to the test points of the circuit.
The display shows the measurement.
If the resistance is <30 Ω, the beeper sounds continuously to
indicate continuity. If the display shows OL, the circuit is open.
To disable the beeper, see Power-On
Clamp Meter
Basic Measurements
N
.
Note
D
.
Options.
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