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Schulze
Designation System
 Shafts
are
made of stainless steel to dimensions shown on the frame
outline drawings in the catalog. Other dimensions or materials
and special features such as flats, slots, splines, threads,
double extensions, etc. can be furnished if requested.
Ball
Bearings with
seals and/or shields are lubricated for the life of the
bearings. Chrome or stainless steel material is used depending
on the requirements.
Frame
Material is
cast aluminum. A blue-grey mottletone baked enamel is furnished
on all non-mounting exterior surfaces. Other colors can
be provided if requested.
Ventilation,
utilizing
an internal fan, is provided on all A and G frames. These
frames can also be supplied as totally enclosed units with
a reduced horsepower rating. The BS, FS, BSJ, and FBS frame
are normally supplied totally enclosed.
Special
Treatment can
be provided to meet extreme conditions of humidity, fungus
environment, vibration, shock, high and low temperature
and other requirements of military specifications.
Special
Mounting or
mechanical configuration can be supplied when requested.
Various units can be combined into a single frame to meet
special electrical requirements.
Electrical
Characteristics
for Hysteresis & Salient Pole Synchronous Motors
VOLTAGE:
All frames, both in hysteresis and salient
pole can be wound for voltages up to 440 volts.
SPEED:
The synchronous speed for the hysteresis
and salient pole motors is determined by the formula:
| Synchronous
RPM= |
120
X Line Frequency
Number of Poles |
The
following speeds are available by frames:
|
|
| Hysteresis
Motors |
50
Hertz RPM |
60
Hertz RPM |
400
Hertz RPM |
Poles |
| "BS",
"FS" or "FBS" |
1000 |
1200 |
8000 |
6 |
| 1500 |
1800 |
12000 |
4 |
| 3000 |
3600 |
24000 |
2 |
| "AS",
"AL", "G", "GL" |
500 |
600 |
4000 |
12 |
| 750 |
900 |
6000 |
8 |
| 1000 |
1200 |
8000 |
6 |
| 1500 |
1800 |
12000 |
4 |
| 3000 |
3600 |
24000 |
2 |
| Salient
Pole Motors |
60
Hertz RPM |
Poles |
| "BS",
"FS", or "FBS' |
1800 |
4 |
| 3600 |
2 |
| "AS",
"AL", "G", "GL" |
1200 |
6 |
| 1800 |
4 |
| 3600 |
2 |
NOTE:
Synchronous speeds will vary directly with frequency.
Dual speed hysteresis 60 or 400 hertz motors
can be supplied in any combination of the above
single speeds. Three and five speed motors are
listed here. |
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FREQUENCY:
Hysteresis synchronous motors are available or can be developed,
in each frame, in any desired frequency from 15 hertz to
1200 hertz. Salient pole synchronous motors are available
or can be developed, in each frame, in any desired frequency
from 15 hertz to 240 hertz.
WINDINGS:
Motors can be wound for one, two or three
phase operation, with class (H) insulation and other special
features. Many units for special application are not shown
in the catalog. If the motor you require is not shown, send
us your specifications.
INSULATION:
The following
classes of insulation are safe for the following continuous
duty at the listed temperatures. The listed temperatures
are the absolute value of temperature which consists of
the temperature rise of the motor and the ambient temperature.
| Class
A |
105°C |
221°F |
| Class
F |
155°C |
311°F |
| Class
H |
180°C |
356°F |
| Horsepower
Ratings at Rated Torque |
| Hysteresis
Motors |
- |
| "BS"
or "FS" frame |
1/500
to 1/200 HP |
| "FBS"
frame |
1/250
or 1/100 HP |
| "AS"
frame |
1/300
to 1/50 HP |
| "AL"
frame |
1/250
to 1/25 |
| "G"
frame |
1/75
to 1/10 HP |
| "GL"
frame |
1/50
to 1/6 HP |
| Salient
Pole Motors |
- |
| "BS"
or "FS" frame |
1/500
to 1/250 HP |
| "FBS"
frame |
1/250
to1/125 HP |
| "AS"
frame |
1/300
to 1/75 HP |
| "AL"
frame |
1/250
to 1/50 HP |
| "G"
frame |
1/75
to 1/15 HP |
| "GL"
frame |
1/50
to 1/10 HP |
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Definition
Of Catalog Terms
All motors will meet rated torque at rated voltage, frequency
and capacitor. All other data given is nominal.
Starting Torque
The starting torque of
a motor is the torque which the motor will develop at rest
at any angular position of the rotor.
Pull Out Torque
The pull out torque is the maximum torque
which the motor will develop at synchronous speed.
Pull In Torque
The pull in torque is
the maximum torque under which the motor will pull into
synchronous speed as the rotor approaches synchronous speed.
Pull Up Torque
The pull up torque is
the minimum torque developed by the motor during the period
of acceleration from zero speed to pull in torque.
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