Elma DT902
side 8
Elements of the Motor and Phase Rotation indicator
Indicators, buttons, and jacks are shown in Figure 1.
1
2
3
4
MOTOR&PHASE ROTATION INDICATOR
5
6
7
1
2
3
4
5
6
7
Test lead input jack
L1,L2,L3 Indicators
Clockwise Rotation LCD Indicator
Counter-Clockwise Rotation LCD Indicator
ON/OFF button
ON/OFF Indicator
Orientation Symbol
Figure 1. The Motor and phase Rotation Indicator
Using the Motor & phase Rotation Indicator
Determine Rotary Field Direction
To determine the rotary field direction:
•
Connect one end of the test leads to the Motor and Phase Rotation indicator. Make
sure the L1, L2, and L3 test leads are connected to the corresponding input jacks.
•
Connect the test probes to the other end of the test leads.
•
Connect the test probes to the three mains phases. Press the ON/OFF button. The
green ON indicator shows that the instrument is ready for testing.
•
Either the Clockwise or Counter Clockwise Rotary indicator illuminates showing the
Type of rotary field direction present.
•
The rotary indicator lights even if the neutral conductor, N, is connected instead of
the Test lead input jacks. Refer to Figure 2 (also shown on the back of the Motor
and Phase Rotation indicator) for more information.
Figure 2. Phase Indication Table (shown on
the rear of the Motor and Phase Rotation indicator)
Summary of Contents for DT902
Page 22: ...Elma DT902 side 19...
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