Mda Test Tool - Fluke ScopeMeter 190 Series III User Manual

To prevent electrical shock, use the insulation sleeve when you connect the
VPS410 Probe Set without the hook clip or the ground spring.

MDA Test Tool

To make motor drive voltage and current measurements:
1. Connect the voltage probe to input A.
2. Connect the voltage probe tip to a phase.
3. For Phase-Phase measurements, connect the ground lead to another phase that is used as a
reference.
4. For Phase-Ground measurements, connect the ground lead to ground.
5. For the current measurement, place the clamp around one phase and connect the current
probe to input B.
After measurement selection, an on-screen connection diagram shows the connections for
each measurement.
To make motor drive 3-phase voltage unbalance measurements:
1. Connect the red voltage probe to input A, the blue voltage probe to input B, the gray voltage
probe to input C.
2. Connect the probe tip to a phase and the ground leads of each voltage probe to another
phase as shown in the connection diagram on the screen after you select the measurement.
3. For each phase, make sure that one probe tip and one ground lead are connected.
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Figure 4. Scope Connections
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