|
EARTHING
TERMINALS :
All
motors are provided with 4 earthing terminals, two in the terminal
box and one on each foot.
CONVERTER
OPERATION :
1LAO
motors can be suitably designed for use with converters (variable
voltage, variable frequency drives).
RE-RATING
FACTORS :
The
re-rating factors applicable under different conditions are as below
:
•
Altitude of Location
|
Altitude
above Mean
Sea Level in Metres
|
1000
|
1500
|
2000
|
2500
|
3000
|
3500
|
4000
|
|
Permissible
Output as
% of rated value
|
100
|
97
|
94
|
90
|
86
|
82
|
77
|
Variation
in supply voltage & frequency
|
Voltage
Variarion
|
Frequency
Variation
|
Combined
Voltage &
Frequency
Variation%
|
Permissible
Output as% of
Rated Value
|
|
±
6
|
±
3
|
±
9
|
100
|
|
±
10
|
±
5
|
±
10
|
95
|
|
±
12.5
|
±
5
|
±
12.5
|
90
|
|
±
15
|
±
5
|
±
15
|
85
|
|
Ambient temperature / temperature rises
|
Maximum
Ambient
Temperature C
|
Restriction
on Temp.
Rise (Resistance
Method) C
|
Permissible
Output
as % of
Rated Value
|
|
<
30
|
—
|
107
|
|
30-40
|
—
|
100
|
|
45
|
75
|
96
|
|
50
|
70
|
92
|
|
55
|
65
|
87
|
|
BEARING
SYSTEM
Frames upto 225M
have pre-lubricated bearings as a standard feature but regreasing
facility can be providedon
request. Frames 250 and above are equipped with regreasable bearings
as a standard feature.
•
Bearing Data
|
Frame
Size
|
Motor
Type
1LAO
|
Poles
|
Bearing
Type
|
|
|
Horizontal
Construction
|
Vertical
Construction
|
|
|
|
Drive
end
|
Non-drive
end
|
Drive
end
|
Non-drive
end
|
|
|
|
160M,L
|
16
|
2...8
|
6209
C3
|
6209
C3
|
6209
C3
|
6209
C3
|
|
|
180M,L
|
18
|
2...8
|
6210
C3
|
6210
C3
|
6210
C3
|
6210
C3
|
|
|
200
L
|
20
|
2...8
|
6212
C3
|
6212
C3
|
6212
C3
|
6212
C3
|
|
|
225
S,M
|
22
|
2...8
|
6213
C3
|
6213
C3
|
6213
C3
|
6213
C3
|
|
|
250
M
|
25
|
2...8
|
6215
C3
|
6215
C3
|
6215
C3
|
6215
C3
|
|
|
315
S,M
|
28
|
2
|
6216
C3
|
6216
C3
|
6216
C3
|
6216
C3
|
|
|
4...8
|
6317
C3
|
6317
C3
|
6317
C3
|
6317
C3
|
|
|
315
L
|
310,
313
|
2
|
6217
C3
|
6217
C3
|
6217
C3
|
6217
C3
|
|
|
4...8
|
6319
C3
|
6319
C3
|
6319
C3
|
6319
C3
|
|
|
355
L
|
316,
317
|
2
|
6217
C3
|
6217
C3
|
6217
C3
|
7217
B
|
|
|
4...8
|
6319
C3
|
6319
C3
|
6319
C3
|
6319
C3
|
|
|
355L
|
35
|
2
|
NU
217
|
NU
217+
6217 C3
|
NU
217
|
7217
B
|
|
|
4...8
|
6322
C3
|
6322
C3
|
6322
C3
|
6322
C3
|
|
|
