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Motor and Phase Rotation Indicator/English
OFF
ON
Figure 2. Phase Indication Table (shown on the rear of the Motor and
Phase Rotation Indicator)
Non-contact Rotary Field Indication
For non-contact rotary field Indication:
1. Disconnect all test leads from the Motor and Phase Rotation Indicator.
2. Position Phase Rotation Indicator on the motor so that it is parallel to
the length of the motor shaft. Phase Rotation Indicator should be
25mm or closer to the motor. See Figure 3.
3. 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.
Note
The indicator will not operate with engines controlled by frequency
converters. The bottom of the Motor and Phase Rotation Indicator
should be oriented towards the drive shaft. See the Orientation Symbol
on the Motor and Phase Rotation Indicator.
4
NOT DEFINED
Figure 3. Motor Rotation
See Table 2 for the minimum motor diameter and number of pole
pair to obtain a reliable test result.
Table 2. Reliable Motor Test Requirements
Rotary Number Of Rotary Field (1/min)
Number of
at Frequency (HZ)
pole pair
16 2/3
50
1
1000
3000
2
500
1500
1000
3
333
250
750
4
200
600
5
500
167
6
125
375
8
100
300
10
250
12
83
188
16
62
Determine the Motor Connection
1. 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 jack.
2. Connect the alligator clamps to the other end of the test leads.
3. Connect the alligator clamps to the motor connections, L1 to U, L2
to V, L3 to W.
4. Press the ON/OFF button. The green ON indicator shows that the
instrument is ready for testing.
5. Turn the motor shaft half a revolution towards the right.
Motor and Phase Rotation Indicator/English
Angle Between
Min.
of
poles
Motorcase
cm
60
3600
5.3
60
1800
30
10.7
16.0
1200
20
21.4
900
15
26.7
720
12
600
10
32.1
450
7.5
42.8
6
53.5
360
300
5
64.2
225
3.75
85.6
5
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