DL9110 / DL9118 Operating Instructions
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Note: A Line Impedance measurement is automatically made as
part of the Earth Loop Impedance test. The Line Impedance
measurement (L-N) and Prospective Short-circuit Current
(PSC) can be viewed by simply pressing function key F1,
without the need to repeat the test.
5.8 Three Phase Line Impedance (DL9118 only)
The DL9118 will only allow the 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).
Rotate the rotary switch until Ze/Zs High is selected. Functions keys
F1-F4 have are used to select the options below:
F1 F2 F3 F4
Not used Not used Not used Auto Start
Note: When the Ze/Zs High switch position is selected, the DL9118
will default to the last used setting, even if it has been
switched off.
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
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 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.
To begin the test, press and release the TEST key or select Auto Start
using F4.
When the test is complete, the line measurement is shown in the
primary display and the calculated Prospective Short-circuit Current
(PSC) is shown in the secondary display.
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