|
A.C
Hysteresis Synchronous Motors
| ONE
OR TWO PHASE, ODD FREQUENCY, ODD VOLTS |
| Frame
|
Type |
Phase |
Hertz |
Volts
D.C. |
Speed
RPM |
Poles |
HP |
Rated
Torque Oz. In. |
Pull
Out Torque Oz. In. |
Start
Oz. In. |
Pull
In Torque Oz. In. |
Cap
Value Mfd. |
Cap
Voltage |
| BS |
2591 |
1 |
60 |
12 |
1800 |
4 |
1/200 |
3.0 |
3.3 |
4.0 |
3.1 |
100 |
25 |
| AS |
2247 |
1 |
60 |
125 |
1200 |
60 |
1/90 |
9.3 |
13.3 |
8.5 |
13.1 |
1.0 |
330 |
| AS |
2389 |
1 |
60 |
125 |
1800 |
4 |
1/70 |
8.0 |
8.6 |
10.2 |
8.2 |
1.5 |
330 |
| AS |
2443 |
1 |
150 |
125 |
3000 |
6 |
1/45 |
8.0 |
9.0 |
6.1 |
8.5 |
0.5 |
440 |
| AL |
2413 |
1 |
60 |
125 |
900 |
8 |
1/140 |
8.0 |
8.8 |
11.3 |
8.2 |
1.5 |
330 |
| G |
2277 |
1 |
30 |
125 |
300 |
12 |
1/425 |
8.0 |
14.4 |
16.8 |
12.8 |
1.5 |
330 |
| G |
2442 |
1 |
60 |
125 |
600 |
12 |
1/150 |
9.6 |
18.9 |
13.4 |
17.3 |
2.0 |
330 |
| BS |
2460 |
2 |
240 |
28 |
7200 |
4 |
1/50 |
2.8 |
3.5 |
4.5 |
3.0 |
— |
— |
|
Stabilized
Hysteresis Motors for Large Inertia Loads
 The
early designs of the Hysteresis Synchronous motor, with low
torques and soft couplings, showed little tendency to hunt.
With the availability of new materials and advanced design
techniques, the torque available from a given motor size increased
tenfold (1/40 horsepower in 1947 to 1/4 horsepower in 1967).
With the increase in torque, difficulties in hunting are proportionally
greater.
In
1950, a high torque Hysteresis motor with fully damped motion
for large loads was developed. Since then, the stabilized
motor has become available in all frame sizes, with various
speed and voltage variations, as well as multi-speed units.
This type of motor has application when an excellent degree
of rotational stability is required. Its use permits higher
basic motor speed for a given load inertia without increasing
hunting and, therefore, greater power out for a fixed motor
size. For the same frame size, the non-hunting feature reduces
horsepower approximately 30%, mainly in the effect on pull
in torque.
The curve at left shows the comparison between a standard
1/16 horsepower Hysteresis motor and the newer non-hunting
unit. It may be seen that the non-hunting motor not only radically
reduces the duration of any oscillation but cuts the magnitude
of the initial swing about 50%.
The standard motor is capable of damping out after one oscillation
a connected load inertia of approximately 9 oz. in? by weight,
as against a value of 180 oz. in? for the motor with damped
motion.
| SINGLE
SPEED |
SINGLE
PHASE, 50 HERTZ, 115 VOLTS |
|
| Frame |
Motor
Type No. |
Speed
RPM |
HP |
Full
Load Watts |
Rated
Torque Oz. In. |
Pull
Out Torque Oz. In. |
Starting
Torque Oz. In. |
Pull
In Torque Oz. In. |
Cap
Value Mfd. |
Cap
Voltage |
| FBS |
1284 |
3600 |
1/225 |
24 |
1.2 |
1.5 |
3.2 |
1.4 |
1 |
330 |
| AS |
1858 |
1800 |
1/115 |
45 |
5.0 |
5.2 |
15.2 |
5.1 |
3 |
330 |
| AL |
970 |
1800 |
1/50 |
52 |
11.0 |
12.0 |
19.0 |
11.5 |
3 |
220 |
| AL |
2077 |
3600 |
1/50 |
53 |
5.6 |
8.1 |
9.2 |
7.5 |
3 |
330 |
| GL |
2905 |
600 |
1/150 |
70 |
11.0 |
13.0 |
28.0 |
12.0 |
6 |
220 |
| GL |
2250* |
1800 |
1/15 |
105 |
37.3 |
64.0 |
44.0 |
51.2 |
6 |
330 |
| GL |
2251* |
3600 |
1/10 |
200 |
28.0 |
46.6 |
48.0 |
33.6 |
8 |
330 |
| GL |
2265* |
3600 |
1/6 |
250 |
46.6 |
51.2 |
52.8 |
48.0 |
10 |
330 |
| * |
Indicates
special internal construction to achieve higher
torques in a small package. The prices on
these run about 15% more than the preceding
motors. This is pointed out so that the higher
torque motor will not be selected if the torque
is not required, since a premium price must
be paid for the higher torque when required. |
|
|
| DUAL
SPEED |
SINGLE
PHASE, 50 HERTZ, 115 VOLTS |
|
| Frame |
Motor
Type No. |
Speed
RPM |
HP |
Full
Load Watts |
Rated
Torque Oz. In. |
Pull
Out Torque Oz. In. |
Starting
Torque Oz. In. |
Pull
In Torque Oz. In. |
Cap
Value Mfd. |
Cap
Voltage |
| ALL |
2027 |
900 |
1/225 |
62 |
5.6 |
6.5 |
16.0 |
5.9 |
4 |
220 |
| 1800 |
1/90 |
71 |
7.2 |
7.8 |
13.1 |
7.3 |
4 |
220 |
| ALL |
2168 |
900 |
1/250 |
40 |
4.5 |
5.7 |
8.5 |
5.2 |
2 |
220 |
| 1800 |
1/100 |
49 |
5.8 |
6.8 |
8.3 |
6.4 |
2 |
220 |
| ALL |
1974 |
900 |
1/200 |
57 |
5.6 |
7.2 |
10.2 |
6.7 |
5 |
220 |
| 1800 |
1/75 |
66 |
7.5 |
9.6 |
11.2 |
8.8 |
5 |
220 |
| ALL |
1600 |
1800 |
1/60 |
61 |
9.6 |
11.8 |
16.1 |
9.8 |
5 |
220 |
| 3600 |
1/40 |
80 |
7.0 |
8.5 |
8.5 |
7.0 |
5 |
220 |
| GL |
2356 |
600 |
1/150 |
90 |
11.2 |
15.2 |
25.6 |
14.1 |
5 |
330 |
| 1200 |
1/50 |
118 |
21.0 |
24.8 |
24.0 |
23.2 |
5 |
330 |
| GL |
2499 |
1800 |
1/25 |
110 |
22.2 |
29.8 |
30.4 |
27.8 |
5 |
440 |
| 3600 |
1/15 |
160 |
18.7 |
29.2 |
27.2 |
27.5 |
5 |
440 |
|
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