MI 3125 InstaltestCOMBO
Voltage, frequency, phase sequence
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5.2 Voltage, frequency and phase sequence
Voltage and frequency measurement is always active in the terminal voltage monitor. In
the special
VOLTAGE TRMS
menu the measured voltage, frequency and information
about detected three-phase connection can be stored. Phase sequence measurement
conforms to the EN 61557-7 standard.
See chapter
4.1 Function selection
for instructions on
key functionality.
Figure 5.4: Voltage in single
phase system
Test parameters for voltage measurement
There are no parameters to set.
Connections for voltage measurement
L3
L2
L1
N
PE
N
/L
2
N
/L
2
L/
L
1
L/
L
1
P
E
/L
3
P
E
/L
3
result 1.2.3
result 2.1.3
Figure 5.5: Connection of universal test cable and optional adapter in three-phase
system
L1
L2
L3
N
PE
R
E
Ro
L
PE
N
L/L
1
N/L2
PE/L3
N/
L
2
L
/L
1
PE/
L
3
Figure 5.6: Connection of plug commander and universal test cable in single-phase
system
