12
Information
Application Information
LEESON Electric and Lincoln Motors employ the use of Exxon
POLYREX
®
EM grease, a specially formulated bearing grease
designed for electric motors. POLYREX
®
EM provides supe-
rior lubricity, durability and resists corrosion, rust and washout.
POLYREX
®
EM is a registered trademark of Mobil Corporation.
Maximum safe mechanical speed capability is a function of
bearing size, type and grease selection, as well as rotor balance
specifications. Consult the “Maximum Safe Mechanical Speed
Limits” chart in the “Overspeed Capability” section.
Note that these values do not imply maximum constant horse-
power RPM.
EFFICIENCY
The efficiency of a motor is the ratio of its useful power output
to its total power input and is usually expressed in a percent-
age. LEESON Electric and Lincoln Motors offers standard, high
efficient EPAct, and
NEMA Premium
®
efficient ratings. Standard
efficiency motors may only be used on applications that are
exempt from legislated efficiencies. The high efficient motor
line is in compliance with the Energy Policy Act of 1992 (EPAct)
and/or Canadian efficiencies as set by NRCan. The Energy
Independance and Security Act of 2007 (
EISA07
) will become
law on December 19, 2010, requiring current EPAct-compliant
motors to meet NEMA Premium
®
efficiencies, and most EPAct-
exempt motors to meet EPAct levels. Premium efficient motors in
this catalog meet NEMA Premium
®
unless otherwise noted.
The LEESON WattSAVERe
®
and Lincoln Ultimate-e™ line is a
premium efficiency line, which exceeds mandated efficiencies
of EPAct and /or NRCan. Unless otherwise noted, premium
efficient motors in this catalog meet NEMA Premium
®
the newly
promoted efficiency levels by NEMA and the Consortium for
Energy Efficiency (CEE).
ELECTRICAL TYPE/STARTING METHOD
Motors in this catalog are capacitor start, split phase, permanent
split capacitor, or three phase. Capacitor Start motors have
high starting torque, high breakdown torque, and relatively low
starting current. Split phase motors have medium starting torque
and medium starting current. Permanent split capacitor motors
have low starting torque and low starting current. Three phase
motors have high starting, extra breakdown torque, and typically
very low starting current. Single phase motors cannot be applied
on variable frequency drives with three phase output.
ENCLOSURE AND METHOD OF COOLING
LEESON Electric and Lincoln Motors are available in various
enclosures; Dripproof (DP), Dripproof Force Ventilated (DPFV),
Totally Enclosed Fan Cooled (TEFC), Totally Enclosed Non-
Ventilated (TENV), Totally Enclosed (TEAO) and Totally Enclosed
Blower Cooled (TEBC). Application conditions will determine the
type of motor enclosure required.
Dripproof motors have open enclosures and are suitable for
indoor use and in relatively clean atmospheres. Dripproof motors
have ventilating openings constructed so that drops of liquid or
solid particles falling on the machine at an angle of not greater
than 15 degrees from the vertical cannot enter the machine.
Totally enclosed motors are suitable for use in humid
environments or dusty, contaminated atmospheres. Totally
enclosed non-ventilated motors are NOT cooled by external
means. Totally enclosed fan cooled motors are cooled by
external means that are part of the motor but not in the internal
workings of the motor. Totally enclosed air over motors are
sufficiently cooled by external means, provided by the customer.
HAZARDOUS DUTY
Hazardous Duty motors are totally enclosed (fan cooled or
non-ventilated) motors designed for applications in hazardous
atmospheres containing explosive gases and/or combustible
dusts.
North American installations
North American standards for electric motors generally fall into
one of two divisions. Division 1 Explosion Proof motors are UL
Listed in accordance with NFPA Class I (Flammable Gases)
or Class II (Combustible Dusts) and Groups (gases or dusts),
depending upon the atmosphere. Division 2 motors are CSA
Certified and are marked similarly to Division 1 equipment.
Inverter Duty motors through 449T frames are CSA Certified for
use in Division 2 locations.
European installations
Motors for hazardous locations in Europe must meet a
different set of standards and require different markings than
those of North America. CENELEC sets the standards for
equipment in hazardous locations for Europe. Motors for
use in explosive atmospheres in Europe are often referred
to as flameproof (Zone 1) or non-sparking (Zone 2) motors.
These motors must comply with the ATEX Directive. The ATEX
Directive covers all electrical equipment used in explosive
atmospheres. To ensure compliance with the Directive, equip-
ment must meet the essential ATEX requirements and carry the
CE mark on the nameplate. Other information required on the
nameplate includes the Ex symbol, group & category, Ex
protection method, gas group, and temperature code, example
( II 3 G Ex nA IIC T3).
The tables on the next page describe LEESON Electric and
Lincoln Motors capabilities by Area Classification and by
Temperature Code.
