Fluke 1650B [25/62] Warning

Electrical Installation Tester

Making Measurements

Note

For normal insulation with high resistance, the actual test voltage (U

)

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.

Measuring Continuity

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Figure 9. Continuity Zero Display/Switch and Terminal Settings

A continuity test is used to verify the integrity of connections by making a high

resolution resistance measurement. This is especially important for checking

Protective Earth connections.

Note

In countries where electrical circuits are laid out in a ring, it is

recommended that you make an end-to-end check of the ring at the

electrical panel.

XW Warning

• Measurements should only be performed on de-energized

circuits.

• Measurements may be adversely affected by impedances or

parallel circuits or transient currents.

To measure continuity:

1. Turn the rotary switch to the R

position.

2. Use the L and PE (red and green) terminals for this test.

3. Before making a continuity test, use the Zero adapter to zero the test

leads. Press and hold Z until the ZERO annunciator appears. The

tester measures probe resistance, stores the reading in memory, and