DL9120 / DL9130
Operating Instructions
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If the touch voltage warning persists in 3 wire mode, then
there is a potential hazard with the circuit under test.
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).
Z Max (F2, DL9130EV only)
When enabled, the DL9130EV will record the highest Loop or Line
Impedance measurement taken. This will be displayed in the secondary
display. When this function is disabled, the maximum recorded value is
reset.
Auto Start (F4)
When Auto start is activated the AUTO icon is shown on the display. Loop
measurements will automatically start approximately 3s after the DL9120
/ DL9130EV is connected to the 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 DL9120 / DL9130EV is powered off. To disable
the Auto Start function press F4.
Note: If the mains supply is removed within the Auto start
countdown period the test will not start.
Note: If the mains power is removed during the loop measurement,
or the RCD trips the test will terminate and the display will
show “RCD” to indicate that power has been removed.
TEST
To begin the test, press and release the TEST key or select Auto Start
using F4.
When the test is complete, the measurement is shown in the primary
display and the calculated Prospective Fault Current (PFC for Loop
Impedance) or Prospective Short-circuit Current (PSC for Line
Impedance) is shown in the secondary display.
5.7 Three Phase Line Impedance
The DL9120 / DL9130EV will only allow Three Phase Line
Impedance test to be performed if the correct voltages are
detected between line-earth (L-PE illuminated), line-line (L-
N illuminated) and line-earth (N-PE
not
illuminated).