Lifting means – Rockwell Automation 1329R Vertical Mount, In-Line AC Motors User Manual
Page 5
Vertical Solid Shaft Normal Thrust and In-Line AC Motors
5
Table A
General Effect of Voltage & Frequency Variation on Induction-motor Characteristics
NOTE: This table shows goneral effects, which will vary somewhat for specific ratings.
Lifting Means
Lifting means are provided for handling the motor only and should
not be used to lift the motor plus the driven equipment without
consulting the local Allen-Bradley Sales Office. In all cases, care
should be taken to assure lifting in the direction intended in the design
of the lifting means. Likewise, precautions should be taken to prevent
hazardous overloads due to deceleration, acceleration or shock forces.
Refer to Lifting Nameplate to assure correct lifting procedure. (See
below).
When mounting the motor it is essential that motor and drive unit be
rigidly supported in correct alignment. This also applies when
mounting In-line NEMA LP motors.
Variation
Starting &
Maximum
Running
Torque
Sync
Speed
Slip %
Full Load
Speed
Efficiency
Power Factor/COS
Full
Load
Current
Starting
Current
Temperature
Rise
(full load)
Maximum
Overload
Capacity
Magnetic
Noise
(no-load in
particular)
Full-Load
3/4 Load
1/2 Load
Full Load
3/4 Load
1/2 Load
Voltage Variation:
120%
voltage
Increase
44%
No
change
Decrease
30%
Increase
1.5%
6-0%
Decrease
(1-75 HP)
0-3%
Increase
(100-200 HP)
Decrease
1/2-2
points
Decrease
7-20
points
Decrease
5-15 points
Decrease
10-30
points
Decrease
15-40
points
Increase
12%
Increase
20%
Increase 5-6
degrees C.
Increase
44%
Noticeable
increase
110%
voltage
Increase
21%
No
change
Decrease
17%
Increase
1%
Slight
decrease
Practically
no change
Decrease
1-2 points
Decrease
5-10 points
Decrease
5 points
Decrease
5-6 points
Increase
2-4%
Increase
10-12%
Increase 3-4
degrees C.
Increase
21%
Increase
slightly
Functions
of Voltage
(voltage)
2
Constant
1
(voltage)
2
(sync
speed slip)
voltage
(voltage)
2
90%
Voltage
Decrease
19%
No
change
Increase
23%
Decrease
1-1/2%
Decrease
2 points
Practically
no change
Increase
1-2 points
Increase
5 points
Increase
2-3 points
Increase
4-5 points
Increase
11%
Decrease
10-12%
Increase 6-7
degrees C.
Decrease
19%
Slight
decrease
Frequency Variation:
105%
frequency
Decrease
10%
Increase
5%
Practically
no change
Increase
5%
Slight
increase
Slight
increase
Slight
increase
Slight
increase
Slight
increase
Slight
increase
Slight
decrease
Decrease
5-6%
Slight
decrease
Slight
decrease
Slight
decrease
Function of
frequency
1
(frequency)
2
Frequency
(sync
speed slip)
1
frequency
95%
frequency
Increase
11%
Decrease
5%
Practically
no change
Decrease
5%
Slight
decrease
Slight
decrease
Slight
decrease
Slight
decrease
Slight
decrease
Slight
decrease
Slight
increase
Increase
5-6%
Increase
slightly
Increase
slightly
Increase
slightly
!
ATTENTION: When lifting means are provided for
handling the motor, it should not be used to lift the motor
plus additional equipment such as gears, pumps,
compressors or other driven equipment. Failure to observe
this precaution could result in bodily injury.