Voltage, Frequency And Phase Sequence - METREL MI 3122 Instruction Manual

MI 3122 Smartec Z Line-Loop / RCD

5.4 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.
Test parameters for voltage measurement
There are no parameters to set.
Connections for voltage measurement
Figure 5.15: Connection of universal test cable and optional adapter in three-phase system
Ro R
E
Figure 5.16: Connection of plug commander and universal test cable in single-phase
L3
L2
L1
N
PE
result 1.2.3
Voltage, frequency, phase sequence
Figure 5.14: Voltage in single
result 2.1.3
system
34
phase system
N PE L
L1
L2
L3
N
PE