11
12
Wiring test
N
E
L
The wiring test result will be shown immediately
after the analyzer is plugged to the socket under
test. The analyzer can identify the following wiring
conditions and display the test result on the screen.
Wiring
condition
Normal
No ground
wire is found
The live/zero
line is
connected
inversely.
Other
conditions
Screen display
L E N
Caption
Off
On
Flashing
Where any wiring abnormality is found, the
analyzer can only complete partial measurement.
Where there is no earth line, the analyzer can only
measure the phase voltage and voltage drop.
Notes: The analyzer can't detect
1. Circuit voltage, i.e. the voltage between two live
lines;
2. Combined fault;
3. Reverse connection of earth line and neutral line.
Voltage measurement
The normal measured value of phase voltage is
120V±10%, 60Hz. The peak voltage of sine-wave
alternating current is 1.414 times to the effective
value of phase voltage. The voltage to earth of
neutral line shall be less than 2V. In the single-phase
circuit, if the “voltage to earth of zero line” is high,
it indicates that the leakage current in zero line or
earth line is high. In the three-phase circuit with
neutral line, a high “voltage to earth of zero line”
indicates that the three-phase load is imbalanced
or the neutral line is affected by harmonic
interference. Excessive voltage (voltage to earth
of zero line) will result in running deviation or
interruption.
Warning
The maximum measurement voltage shall not
exceed 265V!
