METREL EurotestCOMBO MI 3125 - 5 Measurements; 5.1 Voltage, frequency and phase sequence

MI 3125 / BT EurotestCOMBO Measurements
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Voltage measurement procedure
* model MI 3125 BT
 Select the VOLTAGE TRMS function using the function selector switch.
 Connect test cable to the instrument.
 Connect test leads to the item to be tested (see figures 5.2 and 5.3).
 Store voltage measurement result by pressing the MEM key (optional)*.
Measurement runs immediately after selection of VOLTAGE TRMS function.
Figure 5.4: Examples of voltage measurement in three-phase system
Displayed results for single phase system:
Uln ........... Voltage between phase and neutral conductors,
Ulpe ......... Voltage between phase and protective conductors,
Unpe ........ Voltage between neutral and protective conductors,
f ............... frequency.
Displayed results for three-phase system:
U12 .......... Voltage between phases L1 and L2,
U13 .......... Voltage between phases L1 and L3,
U23 .......... Voltage between phases L2 and L3,
1.2.3 ........ Correct connection – CW rotation sequence,
3.2.1 ........ Invalid connection – CCW rotation sequence,
f ............... frequency.