19
20
5) According to the wire connection interface (Fig. 11), clamp L2 live wire, connect L2 live
wire with test lead from V terminal, and connect neutral wire with test lead from COM
terminal, then press “HOLD” button to enter P2 measurement interface, as shown below:
The finger symbol on “HOLD” segment flashes to indicate pressing “HOLD” button to enter
P3 wire connection interface.
6) In P2 measurement interface, after the displayed value stabilizes, press “HOLD” button to
enter P3 wire connection interface, as shown below:
“L3” on top right corner indicates the jaws clamp L3 live wire, “n” on bottom left corner
indicates test lead from COM terminal connects with neutral wire, “L3” on bottom right
corner indicates test lead from V terminal connects with L3 live wire. The finger symbol on
“HOLD” segment flashes to indicate pressing “HOLD” button to enter P3 measurement
interface.
7) According to the wire connection interface (Fig. 11), clamp L3 live wire, connect L3 live wire
with test lead from V terminal, and connect neutral wire with test lead from COM terminal,
then press “HOLD” button to enter P3 measurement interface, as shown below:
The finger symbol on “HOLD” segment flashes to indicate pressing “HOLD” button to enter
phase-combined active power interface.
UT219P User Manual
UT219P User Manual
8) In P2 measurement interface, press “HOLD” button to read phase-combined active power,
press SELECT button to cyclically read phase-combined active power, phase-combined
apparent power, phase-combined reactive power, phase-combined phase angle, P1 active
power, P2 active power and P3 active power, as shown below:
Main display: Phase-combined
reactive power
Auxiliary display 1: Phase-combined
power factor
Main display: Phase-combined
apparent power
Auxiliary display 1: Phase-combined
power factor
Main display: Phase-combined
active power
Auxiliary display 1: Phase-combined
power factor
Main display: Phase-combined
phase angle
Auxiliary display 1: Phase-combined
power factor
Main display: First active power
Auxiliary display 1: P1 prompt
Auxiliary display 2: Voltage
Auxiliary display 3: Current
Main display: Second active power
Auxiliary display 1: P2 prompt
Auxiliary display 2: Voltage
Auxiliary display 3: Current
Main display: Third active power
Auxiliary display 1: P3 prompt
Auxiliary display 2: Voltage
Auxiliary display 3: Current
Short press
Short press
Short press
Short press
Short press
Short press
Short press
Note:
Phase angle is in reference to voltage.
Do not input voltage over 1000V. It is possible to measure higher voltage, but it may damage
the clamp.
Avoid electric shock when working with high voltage.
Disconnect test leads with the measured circuit after all measurement operations are
completed.
The high voltage warning symbol “ ” will appear on the LCD if the measured voltage is over
30V AC; the red backlight flashes if the measured voltage is over 1000VAC.
Do not release the trigger abruptly when pressing and holding it. Hall sensor is sensitive to
magnet, heat and mechanic stress, impact can cause reading variation in a short time.
To ensure measurement accuracy, please place the measured conductor at the center of the
clamp jaws. Error of ±1.0% of reading will be produced if the measured conductor is not placed
at the center of the clamp jaws.
Incorrect wire connection will cause negative active power and cause the red backlight to
flash, please check if the connections of voltage input terminal and clamp jaws are correct.
5. Harmonic analysis
5.1 Current harmonic analysis (Fig. 4)
1) Set the rotary switch to “HARM”, press SELECT button to select AC current harmonic analysis.
Press the trigger to clamp the measured conductor and then release the trigger slowly until
the clamp jaws closes completely. Make sure that the measured conductor centers at the
clamp jaws, error will be produced if the measured conductor does not centers at the clamp
jaws. The clamp can only measure a current conductor at a time, if it measures two or more
current conductors at the same time, the reading will be incorrect.
2) Press “ ” or “ ’ to read THD %f, THD %r, RMS of harmonic component of each order,
and harmonic ratio of harmonic component of each order to fundamental wave, for examples:
Δ
Δ
