NIDEC Hazardous Location Specifications Introduction
THREE PHASE MODIFIABLE NEMA HORIZONTAL MOTORS PRODUCT OFFERING
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THREE PHASE MODIFIABLE NEMA HORIZONTAL MOTORS
THREE PHASE MODIFIABLE NEMA HORIZONTAL MOTORS ACCESSORIES
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ACCU-Torq Motor Accessories and Available Conversions
Nominal Full Load Efficiencies of Premium Efficient 60Hz </=600V Motors
Special Application—Vector Duty Blower(ACCU-Series)
LOAD INERTIA TABLES—SQUIRREL-CAGE INDUCTION MOTORS
STANDARD LOCKED ROTOR & BREAKDOWN TORQUE
Hazardous Location Specifications
Encoder Selection Chart
NEMA Dimension Guide
A7
www.usmotors.com
† All marks shown within this document are properties of their respective owners.
Certain locations may be classified as hazardous because the
atmosphere may contain gas, vapor or dust in explosive quantities.
The National Electrical Code (NEC
®†
) divides these locations into
Classes and Groups according to the type of explosive agent which
may be present. Examples of these agents are shown below. For
a complete list, see NFPA (National Fire Protection Association)
publication 487M.
Underwriters’ Laboratories (UL
®†
) tests motors and other devices
for use in explosive atmospheres and publishes a list of those
meeting its standards for each Class and Group. Use of UL
®†
listed devices does not necessarily make an installation conform
to the NEC
®†
or local codes. Consult Chapter 5 of the NEC
®†
,
local building codes, OSHA requirements and insurance inspectors
for detailed data as to proper procedures.
Class I - Flammable Gases or Vapors:
Gases and vapors are
grouped by severity of expected explosion pressure and extent
of flame propagation between parts. For Class I applications,
NIdec Motor Corp. offers hazardous location products for:
• Group C - ethyl-ether, ethylene and propane
• Group D - gasoline , hexane, naptha, benzene, butane,
propane, alcohol, lacquer solvent vapors and natural gas
Class II - Combustible Dusts:
Dusts are grouped by
combustibility, penetrability between parts, blanketing effect,
ignition temperature and ability to contribute to creation of an
ignition source through abrasiveness or electrical conductivity.
For Class II applications, NIdec Motor Corp. offers hazardous
location products for:
• Group E - aluminum, magnesium similar metal dusts
• Group F - carbon black, coal or coke
• Group G - flour, starch or grain
Temperature:
In addition to the identification of the class,
group and division, it is necessary to obtain the temperature
code or maximum surface temperature for the hazardous
location motor. This code or temperature indicates the
maximum surface temperature for all conditions, including
burnout, overload, single phasing and locked rotor. The
maximum surface temperature, or “T” code, must be identified
on the nameplate.
All hazardous location motors have a temperature code that
defines the maximum allowable frame temperature. These
codes are as follows:
Hazardous Location
For pumps, fans, compressors, blowers, conveyors and
general industrial equipment in hazardous locations as
defined by class and group.
Horsepower:
1/4 through 200 HP,
Single and Dual Label
Phase:
Single and Three Phase
RPM:
1200, 1800 and 3600
Voltage:
115/208 - 230, 115/230,
230/460, 208-230/460 and 460
Efficiency:
Premium, Energy and
Standard Efficient
Mounting:
Footed, Footless C-Face
Agency:
UL
®†
Recognized and
CSA
®†
Certified
† All marks shown within this document are properties
of their respective owners.
Hazardous Location Specifications
HAZARDOUS LOCATION
MOTORS
*Class I, Group D only, requires caution statement
**Requires thermostats
***Not allowable for use with Class II locations
Temperature Identification Numbers
Maximum Temperature (For All Conditions)
Celsius Fahrenheit
T-Code
280* 536
T2A***
260* 500
T2B***
230* 446
T2C***
215* 419
T2D***
200* 392
T3
180* 356
T3A
165* 329
T3B
160* 320
T3C
135* 275
T4
120* 248
T4A
100* 212
T5
THREE PHASE MODIFIABLE NEMA HORIZONTAL MOTORS PRODUCT OFFERING
INDEX
选型目录：
Catalog highlights
Product General Information
THREE PHASE MODIFIABLE NEMA HORIZONTAL MOTORS
THREE PHASE MODIFIABLE NEMA HORIZONTAL MOTORS ACCESSORIES
AND MODIFICATIONS
ACCU-Torq Motor Accessories and Available Conversions
Nominal Full Load Efficiencies of Premium Efficient 60Hz </=600V Motors
Special Application—Vector Duty Blower(ACCU-Series)
LOAD INERTIA TABLES—SQUIRREL-CAGE INDUCTION MOTORS
STANDARD LOCKED ROTOR & BREAKDOWN TORQUE
Hazardous Location Specifications
Encoder Selection Chart
NEMA Dimension Guide
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