Operation Manual

16 GMC-I Messtechnik GmbH
6 Measuring Voltage and Frequency
Select Measuring Function
Switch Between Single and 3-Phase Measurement
Press the softkey shown at the left in order to switch
back and forth between single and 3-phase mea-
surement. The selected phase measurement is dis-
played inversely (white on black).
6.1 Single-Phase Measurement
Connection
A probe must be used in order to measure probe voltage U
S-PE
.
6.1.1 Voltage Between L and N (U
L-N
), L and PE (U
L-PE
)
a
nd N and PE (U
N-PE
) with Country-Specific Plug Insert, e.g.
SCHUKO
Press the softkey shown at the left in order to switch
back and forth between the country-specific plug
insert, e.g. SCHUKO, and the 2-pole adapter. The
selected connection type is displayed inversely
(white on black).
6.1.2 Voltage between L – PE, N – PE and L – L
with 2-Pole Adapter Connection
Press the softkey shown at the left in order to switch
back and forth between the country-specific plug
insert, e.g. SCHUKO, and the 2-pole adapter. The
selected connection type is displayed inversely
(white on black).
Refer to section 5.8 regarding 2-pole measurement with fast or
semiautomatic polarity reversal.
U
2
1