DL9110 / DL9118
Operating Instructions
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F1
F2
F3
F4
L-PE loop/
L-N loop
select
Not used
Not used
Auto Start
Note: When the Ze/Zs High switch position is selected, the DL9110
/ DL9118 will default to the last used setting, even if it has
been switched off.
L-PE/L-N (F1)
Press the function key F1 to select either the Earth Loop Impedance
test (L-PE) or the Line Impedance test (L-N).
Auto Start (F4)
When Auto start is activated the AUTO icon is shown on the display.
Loop measurements will automatically start approximately 4s after the
DL9110 / DL9118 is connected to correct mains supply via a mains
plug or the test probes. The Auto Start function remains enabled if the
switch position is changed or the DL9110 / DL9118 is powered off. To
disable the Auto Start function press F4.
Note: If the mains supply is removed with the 4s countdown the
loop test will not start.
Note: If the mains power is removed during the loop measurement,
the test will terminate and the display will show “RCD” to
indicate that power has been removed.
To begin the test, press and release the TEST key or select Auto Start
using F4.
During the test, progress is shown by the rotating progress icon. When
the test is complete, the loop measurement is shown in the primary
display and the calculated Prospective Fault Current (PFC) or
Prospective Short-circuit Current (PSC) is shown in the secondary
display.
Note: The DL9110 / DL9118 will determine the fault voltage that
may appear on the protective conductor during the test. If
the fault voltage is greater than 25V the DL9110 / DL9118 will
indicate >25V on the LCD, but the user may proceed with the
test. If the fault voltage is greater than 50V, this is indicated
on the LCD and the test is inhibited.
