How are the various quantities measured?
6,000- and 60,000-count digital multimeters
35
How are the various quantities measured? (continued)
9. Measurement on an
MLI type speed
variator
Voltage
measurement
1. Press:
.
2. Select the type of signal, AC+DC, AC, or DC, by pressing
.
Depending on what you select, the screen displays AC, DC, or AC+DC.
3. Select the filter by pressing
.
4. Connect the black lead to the “COM” terminal and the red lead to “V”.
5. Place the test probes between two phases of the circuit to be measured:
6. Read the measurement values indicated on the display unit (voltage and
frequency):
In all cases, “O.L” is displayed above 1050V (
MTX 3291
) or 620V (
MTX 3290
)
and a beep sounds when the measurement exceeds 1000V (
MTX 3291
) or
600V (
MTX 3290
).
The presence of the symbol indicates that the 300Hz filter is active.
*
It is very important to leave the filter activated to measure the voltage
and frequency of the signal without being perturbed by the MLI.
All manuals and user guides at all-guides.com
