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NOTE: The indicator will not operate with engines
controlled by frequency converters. The bottom of
the Phase & Motor Rotation Meter should be oriented
towards the drive shaft. See the Orientation Symbol on
the Phase & Motor Rotation Meter.
See the table below for the minimum motor diameter and number
of pole pair to obtain a reliable test result.
Number
Rotary Number of Rotary Field
of Pole
Pair
16 2/3
1
1000
2
3
4
5
6
8
10
12
16
Phase & Motor Rotation Meter Model 6611
(1/mm) at Frequency (Hz)
50
3000
500
1500
333
1000
250
750
200
600
167
500
125
375
100
300
83
250
62
188
Figure 4
60
3600
1800
1200
900
720
600
450
360
300
225
Angle
Minimum Ø
Between
of Motorcase
Poles
º
60
30
10.7
20
16.0
15
21.4
12
26.7
10
32.1
7.5
42.8
6
53.5
5
64.2
3.75
85.6
cm
5.3
13
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