1672/1673 FC/1674 FC
Users Manual
50
Voltage Drop
Voltage drop is a calculation of the expected voltage drop in volts and a percentage of the
value from the reference point (usually the distribution board) at a specific outlet. It is derived
from the loop impedance at the point the full maximum allowable current is drawn from that
one outlet. The voltage drop is calculated from the loop impedance L-N at an individual outlet
and the maximum current.
The voltage measurement consists of two measurements steps. First, a test is done at the
distribution board for a reference value. Next, individual outlets are tested. All tests are done in
V-drop mode with the same parameter settings and reference value for all connections made
through the reference point.
Voltage drop is measured on the line-pair L-N and you select the maximum allowable current
from a selection field: 6 / 10 / 16 / 20 / 25 / 32 / 40 A.
To t e s t :
1. Zero the test leads and select the nominal current from the selection field.
2. Measure the reference values at the distribution board.
3. Push
T to start Z
REF
measurement.
4. Push
T again for each individual outlet or connection point. See Figure 22.
Figure 22. Voltage Drop Test Connection
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