Marathon Electric all products Application Information
AGENCY LISTINGS
UL and CSA
Where applicable, Marathon Electric’s motors are UL Listed for
explosion proof enclosures, UL Recognized construction for
non-explosion proof enclosures, and UL Recognized as a
motor/protector combination. Our motors are also CSA Certified
for both explosion proof and non-explosion proof enclosures.
AC Motors
Non-Explosion Proof UL File No. CSA File No.
NEMA 48-449 Frame E49747 LR2025
NEMA 500 and 5000 Frame — LR2025*
IEC 63-90 Frame E49747 LR2025
IEC 100-280 Frame E49747 LR2025
#
* Does not include coverage for use with VFD
#
Domestic product only
Explosion Proof UL File No. CSA File No.
NEMA 56-326 Frame E12044 LR47504
NEMA 364-449 Frame E12044 LR21839
Fire Pump Motors UL File No. CSA File No.
NEMA 143-510 EX5190 LR2025
PMDC Motors
Non-Explosion Proof UL File No. CSA File No.
NEMA -56-145 E57948 LR33543
CE (Conformity Europeanne)
CE marking on the nameplates of Marathon Electric motors is
available upon request. Note that only the "Low Voltage"
directive applies to electric motors. Contact a factory
representative for details. Non-explosion proof microMAX
™
,
BlackMax
®
and BlueMax®(TENV and TEFC) standard (catalog)
models have the CE Mark on the nameplate.
ATEX Directive (Atmospheres Explosibles)
Mandatory by law, the European Union (EU) Directive 94/9/EC
requires that electric motors in contact with a potential ignition
source carry the CE mark, notified body identifier, Ex symbol,
equipment group and category, plus the date code.
NEMA (National Electrical Manufacturers Ass’n)
All Marathon Electric motors are manufactured in accordance
with all applicable NEMA standards in MG1-2003. When
applied in accordance with the "Guidelines for Application of
Three Phase Motors on Variable Frequency Drives", Marathon
Electric motors are in full compliance with NEMA MG12003, Part 31, Section 4.4.2, as pertaining to voltage spikes.
460 volt motors must withstand voltage spikes of up to 1426
volts; 575 volt motors must withstand spikes up to 1788 volts.
See "Insulation Systems" for additional detail on this subject.
Commitment to RoHS and WEEE European
Directives
European Directive 2002/95/EC “Restriction of Use of Certain
Hazardous Substances” (RoHS) and Directive 2002/96/EC
“Directives on Waste Electrical and Electronic Equipment”
(WEEE) were enacted to control the amount of certain
hazardous substances contained in products shipped into the
E.U. Restricted substances include lead, mercury, cadmium,
hexavalent chromium, polybrominated biphenyls and
polybrominated dipheynl ethers.
The scope of products covered, affecting motors, is:
• Large household appliances
• Small household appliances
• IT and telecommunications equipment
• Consumer equipment
• Electrical and electronic tools (except large scale stationary
and industrial tools)
• Toys, leisure and sports equipment
• Automatic dispensers
In addition to the exemption above, the Directives do not
currently apply to medical devices, monitoring and control
instruments, spare parts for the repair or reuse of electrical and
electronic equipment placed on the market before July 1, 2006,
and most military and state security equipment.
Regal Beloit Corporation worked closely with suppliers to
assure that product falling within the scope of these directives
meets the specified levels of these substances. The directives
took affect July 1st, 2006 however many products were
converted in May and June. The products converted are motors
in NEMA frame size 145 and below, both AC and DC motors
with the following exceptions:
• Sleeve bearing motors (an exemption has been applied
for). A compliant ball bearing equivalent motor can be
ordered.
• Brake motors in 56-145 frame will have to be ordered
specifically as RoHS compliant.
• Some motors with specialty electro-mechanical components.
BEARINGS
FRAME SIZE STANDARD TYPE COMMENTS
48 Shield Ball Sleeve bearing as noted
56 - 145T Sealed Ball
182 - 444T Double Shield Ball
284 - 449TS Single Shield Ball
445T - 6805 Double Shield Ball Direct - coupled loads
445T - 6805 Roller (DE)/Ball Belted loads
* Belting data must be provided on all belted applications
Standard horizontal motors can be mounted in a vertical shaft
down orientation (except brakemotors). Contact a factory
representative for shaft up mounting arrangements.
Marathon Electric motors employ the use of Mobil POLYREX
®
EM grease, a specially formulated bearing grease designed for
electric motors. POLYREX®EM provides superior 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
horsepower RPM.
APPLICATION INFORMATION
SB300 – Prices and Specifications are subject to change without notice.
10
Application Information
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
percentage. Marathon Electric offers standard, high efficient
EPAct, and premium efficient (XRI
®
) ratings. Standard
efficiency motors may only be used on applications that are
exempt from EPAct. 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 XRI
®
line is a
premium efficiency line, which exceeds mandated efficiencies
of EPAct and /or NRCan. Unless otherwise noted, XRI
®
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
Marathon Electric 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 NFPAClass 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 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
explosive atmospheres in Europe are often referred to as
flameproof
or non-sparking 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, equipment must meet the
essential ATEX requirements and carry the CE mark on the
nameplate. Other information required on the nameplate is the
Ex symbol, group & category, date code, EEx, protection
method, gas group, and temperature code. (Example: EEx d
IIB T4 CE0359 Ex II 2 G/D 2004)
The tables on page 12 describe Marathon Electric’s
capabilities by Area Classification and by
Temperature Code.
IEC DEGREES OF PROTECTION vs. MARATHON
ELECTRIC’S STANDARD CONSTRUCTION
The enclosure terminology for an IEC motor is a
combination of the IP (Ingress Protection) and IC (Inherent
Cooling) codes. Each number in the IP code stands for a
different degree of protection.
IP12 - Dripproof
IP22 - Dripproof with screens, or die cast aluminum
bracket
IP43 - Totally Enclosed
IP54 - Totally Enclosed Severe Duty
IP55 - Totally Enclosed Severe Duty with V-Ring Shaft
seals, and/or “Smart Ring” rotating shaft seal and
Neoprene gaskets
IP56 - Totally Enclosed Severe Duty with rotating Shaft
seals (eg. Inpro/Seal VBX bearing isolator) and
Neoprene gaskets
APPLICATION INFORMATION
SB300 – Prices and Specifications are subject to change without notice.
11
Application Information
APPLICATION INFORMATION
SB300 – Prices and Specifications are subject to change without notice.
12
Application Information
Division 1 Explosion Proof/Zone 1 Flameproof Division 2/Zone 2 Non-Sparking
TEMPERATURE Class I Area Classification Class II Area Classification* Class I Area Classification
CODES (Flammable Gases, Vapors or Mists) (Combustible Dusts) (Flammable Gases, Vapors or Mists)
Temp. UL/CSA ATEX Division 1/Zone 1 Division 1/Zone 21 Division 2/Zone 2
280OC T2A T2(280)
Explosion Proof - Class I, Group D
(Group C as noted)
260OC T2B T2(260)
XRI®Severe Duty & IEEE-841 @ 1.15 S.F.,
Class I, Groups A,B,C,D (Sine wave power)
Available through Marathon's Mod Central
215OC T2D T2(215)
on Totally Enclosed EPAct, XRI®, XRI®Severe Duty
or IEEE-841 @ 1.0 S.F. on PWM VFD,
Class I, Groups A, B, C, D
Available through Marathon's Mod Central
200OCT3 T3
on Totally Enclosed EPAct, XRI®, XRI®Severe Duty
or IEEE-841 @ 1.0 S.F., Sine wave power
Class I, Groups A, B, C, D
Explosion Proof - Class I, Group D Explosion Proof - Class II,
165OC T3B T3(165)
(Group C as noted), Sine wave Groups F & G, Sine wave
or PWM power or PWM power
160OC T3C T3(160)
Available through Marathon’s Mod Available through Marathon’s Mod
Central on Explosion Proof - Class I, Central on Explosion Proof - Class II,
Group C & D @ 1.0 S.F. - Group F & G @ 1.0 S.F. -
Contact Factory Contact Factory
135OCT4 T4 ATEX compliant motors ATEX compliant motors
Marathon Electric Hazardous Duty Motor Temperature Code Chart
* Class II, Division 2 motors are not available from Marathon Electric, Zone 22 groups are not defined by ATEX.
Class I Area Classification Class II Area Classification
(Flammable Gases, Vapors or Mists) (Combustible Dusts)
Europe - ATEX Europe - ATEX
North America (Category G - Gases) North America (Category D - Dusts)
Division 1 Division 2 Division 1
Explosion TEFC &
Zone1 Zone 2
Explosion Division2
Zone 21 Zone 22
Proof TENV
Flameproof Non-Sparking
Proof
Flameproof Non-Sparking
Group A
①
Group A Group IIC, Category G
①
Group IIC, Category G - - - -
Group B
①
Group B Group IIC, Category G
①
Group IIC, Category G - - - Group C Group C Group IIB, Category G Group IIB, Category G - - - Group D Group D Group IIA, Category G Group IIA, Category G - - - -
- - - - Group E
①
---
- - - - Group F Group F
①
Category D -
- - - - Group G Group G
①
Category D -
Marathon Electric Hazardous Duty Motor Area Classification Chart
- Group is not applicable to that Division or Zone, or is not defined.
① Group is not available from Marathon Electric.
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