25
26
7. Phase sequence detection (Fig. 13)
L1
/
R
/
A
L2
/
S
/
B
L3
/
T
/
C
Black
Red
Power supply
Phase detection
Load
Black
Red
1) Connect red test lead (connected with red alligator clip already) with “V” terminal; and black
(connected with black alligator clip already) with “COM”.
2) Set the rotary switch to “Phase Detect” to enter the first prompt interface of wire connection,
as shown below:
“L2” on bottom left corner indicates test lead from COM terminal connects with L2 live wire,
“L1” bottom right corner indicates test lead from V terminal connects with L1 live wire.
3) According to the first prompt interface of wire connection (Fig. 13), connect test lead from V
terminal with L1 live wire, then connect test lead from COM terminal with L2 live wire. When
the voltage is locked, the clamp enters the second prompt interface of wire connection, as
shown below:
“L2” on bottom left corner indicates test lead from COM terminal connects with L2 live
wire, “L3” bottom right corner indicates test lead from V terminal connects with L3 live wire,
then the prompt time “10s” on top right corner starts to decrease.
UT219P User Manual
UT219P User Manual
Fig. 13
4) According to the second prompt interface of wire connection (Fig. 13), within 10 seconds,
connect test lead from V terminal with L3 live wire, and connect test lead from COM terminal
with L2 live wire, then three kinds of testing results will be displayed.
For positive sequence, “L1”, “L2” and “L3” light up clockwise, as shown below:
Note:
Do not input voltage over 1000Vrms. 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.
5) Press “HOLD” to return to initial interface to start phase sequence detection.
8. Other functions
Auto power off:
The clamp powers off automatically after 15 minutes of inactivity. To awaken the clamp, please
press SELECT button in Auto-off state. To disable the Auto-off function, please hold down
SELECT button and power on the clamp. Restart the clamp to enable the Auto-off function.
Battery voltage detection:
When the battery voltage is:
>3.6V, “ ” appears.
3.4V~3.6V, “
” appears.
3.2V~3.4V, “
” appears.
3.0V~3.2V, “
” appears.
2.8V~3.0V, “
” appears.
<2.8V, the clamp powers off automatically.
For inverse sequence, "L1", "L2" and "L3" light up counterclockwise, and red backlight appears,
as shown below:
