The 9083P will only allow the Earth Loop Impedance test to be performed if the correct voltages are detected between phase-neutral (PN illuminated), phase-earth (PE illuminated) and neutral-earth (NE not illuminated).
Rotate the rotary switch until the Zs test is selected. Press the function key F1 to select either the Earth Loop Impedance test (L-PE) or the Line Impedance test (L-N).
The secondary display will automatically show the appropriate icon: PFC when L-PE is selected and PSC when L-N is selected.
Note: When the Zs switch position is selected, the 9083P will default to the last used setting, even if it has been switched off.
To begin the test, press and release the TEST key.
Note: The 9083P will determine the fault voltage that may appear on the protective conductor during the test. If the fault voltage is greater than 25V the 9083P will indicate >25V on the LCD, but the user may proceed with the test. If the fault voltage is great than 50V, this is indicated on the LCD and the test is inhibited.
