Page 7 - A O Smith 2012

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Speed Engineered® Motors
At A. O. Smith, we build a motor
able to withstand voltage peaks 3.5 times
what is stated on the motor nameplate.
Therefore we design additional
insulation (tape, sleeving, phase
paper, etc.) and strategically locate
this added insulation in a manner
that will yield the necessary protec-
tion against the high voltage pulses that
may occur between magnet wire strands.
This approach yields the desired design
integrity.
With the design for insulation
and winding layout determined,
the success of each motor now
depends on placing the insulation
properly during production. To
provide final assurance for our
customers, A. O. Smith uses a propri-
etary CIV tester that employs a unique
procedure to detect and measure corona
for each and every Speed Engineered
motor we produce…before that motor
leaves our factory!
Because Motor/Drive Applications
Are so Varied, A. O. Smith Offers
Three Distinct Families of Speed
Engineered ® Motors:
E-Plus® motors, the industry’s first
high efficiency, energy-saving motor,
meets 1997 EPACT standards. Now,
E-Plus Motors also carry the protection
of the Speed Engineered design and is
warranted to offer the best performance
available to inverter duty applications.
E-Plus® 3 motors offer even heartier
energy-efficient performance and sav-
ings, exceeding most utility conservation
initiatives, in addition to meeting the
1997 EPACT standards. All E-Plus 3
motors are Speed Engineered rated for
compatible inverter duty applications.
Both E-Plus® and E-Plus® 3 motors
are available in a variety of application
configurations including: variable or
constant torque loads, PWM, sensorless
or sensored vector and with limited or
broad speed ranges.
Speed Engineered motors are rated
for 4:1 speed ratio at constant torque or
6:1 at variable torque.
In addition to being corona free,
A. O. Smith Speed Plus® motors offer
many additional benefits such as:
Wide Speed Ranges to fit your
application:
• 20:1 at constant torque, standard
• 1000:1 at constant torque with the
addition of a blower kit
Standard Features provide opera-
tional flexibility and dependability:
• Totally-enclosed severe duty
• All cast-iron construction
• VPI corona-free Class F insulation
system
• F-1 mounted conduit box
• Dual foot holes
• Normally closed thermostats
• Encoder provisions
Highly Adaptable to address more
specific process specifications:
• Provisions for mounting a wide
range of encoders:
- Dynapar HS35
- Avtron M285
- Lakeshore SL56
- BEI HS 35
• 120-volt A/C blower kits
• Drive end C-Face
• Drive end D-Flange
• Field convertible to F-2 conduit box
location
• Brake kits
E-Plus® 3
Speed Engineered®
Inverter Duty Motor
Speed Plus® Motor