Hioki PD3259-50, Instruction Manual

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38
Measuring Line-to-Line Voltages in a Three-Phase Circuit
Phase voltage measurement (values for reference purposes)
The display will show V
R
, V
S
, and V
T
(or V
1
, V
2
, and V
3
).
When measuring a three-phase circuit, the display will show the
three phase voltage values. However, since the neutral line cannot
be measured, the displayed values indicate a line-to-ground
voltage of each phase using the virtual neutral point (ground) as the
reference.
The displayed phase voltages, accuracy of which is not
guaranteed, can be used for reference only.
1
Display the line-to-line voltage
measurement screen.
The line-to-line voltage measurement screen
is displayed first at the time of the start-up.
Press and hold
2
Press and hold the Fn key.
The phase voltage measurement screen will
be displayed.
3
Check the displayed values.
If the phase voltage is less than 30.0 V, the
string [Lo] will be shown; if the phase voltage
exceeds 400.0 V, the string [ovEr] will be
shown.
4
Press the Fn key.
The line-to-line voltage measurement screen
will be displayed.
HIOKI PD3259C961-00