19
www.nieaf-smitt.com
Nieaf-Smitt is a brand name of Mors Smitt
Note!
The indicator will not operate with engines controlled by
frequency converters. The bottom of the EazyPhase should be
oriented towards the drive shaft (see the orientation symbol on
the EazyPhase).
Figure 2 - Motor rotation
See the table below for the minimum motor diameter and number of
pole pair to obtain a reliable test result.
No. of
pole pair
Rotary number of rotary fi eld (1/min)
at frequency (Hz)
Angle
between
poles
Min.
∅
of
motorcase
16 2/3
50
60
cm
1
1000
3000
3600
60
5.3
2
500
1500
1800
30
10.7
3
333
1000
1200
20
16.0
4
250
750
900
15
21.4
5
200
600
720
12
26.7
6
167
500
600
10
32.1
8
125
375
450
7.5
42.8
10
100
300
360
6
53.5
12
83
250
300
5
64.2
16
62
188
225
3.75
85.6
Table 1 - Reliable motor test requirements
