User Manual

10


Figure 8. Volts Display/Switch and Terminal Settings
To measure voltage and frequency:
1. Turn the rotary switch to the V position.
2. Use all (red, blue, and green) terminals for this test. You can use test leads or mains cord
when measuring AC voltage.
•Theprimary(upper)displayshowstheACvoltage.ThetesterreadsACvoltageto500
V. Press F1 to toggle the voltage reading between L-PE, L-N, and N-PE.
•Thesecondary(lower)displayshowsmainsfrequency.

Figure 9. Insulation Resistance Display/Switch and Terminal Settings
WWarning
To avoid electric shock, measurements should only be performed on de-energized circuits.
To measure insulation resistance:
1. Turn the rotary switch to the R
ISO
position.
2. Use the L and PE (red and green) terminals for this test.
3. Use the F4 to select the test voltage. Most insulation testing is performed at 500 V, but
observe local test requirements.
4. Press and hold
until the reading settles
Note: Testing is inhibited if voltage is detected in the line.
•Theprimary(upper)displayshowstheinsulationresistance.
•Thesecondary(lower)displayshowstheactualtestvoltage.
Note: For normal insulation with high resistance, the actual test voltage (UN) should
always be equal to or higher than the programmed voltage. If insulation resistance is
bad, the test voltage is automatically reduced to limit the test current to safe ranges.