WEG's W21 High Efficiency motors are designed to meet or exceed all EPAct requirements for energy efficiency as defined by the DOE. The efficiency values are certified according to the DOE?s regulations (Certificate of Compliance number CC029A).
W21 motors meet the most demanding severe duty application requirements. These TEFC motors are all cast iron construction, with enclosures rated IP55 to handle wet and dirty environments. They are painted with WEG’s own special system, using synthetic enamel alkyd resin paints, which exceed the ASTM B117 standard for salt spray test. The W21 line is rated for 1.25 Service Factor up to 100HP and meet Design B (up to 100HP) and Design C (from 15HP up to 100HP) torque requirements. This line is rated for dual frequency and dual voltage (with reduced service factor) up to 30 HP. And the entire line is certified Inverter Rated for use with a VFD. This rating meets or exceeds MG1 Part 31 NEMA Specifications.
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Applications:
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Pumps
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Fans
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Crushers
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Conveyors
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Machine tools
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Milling applications
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Centrifugal machines
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Presses
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Elevators
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Looms
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Grinders
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Woodworking
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Cooling
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Packaging equipment
Standard Features:
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Efficiency Certification
number CC029A according to US Department of Energy Regulations
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Three-phase, II, IV, VI and
VIII pole, 60Hz
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Voltage: 208-230/460V, 200V,
460V or 575V
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50/60Hz rated up to 30HP For
40HP and up, please contact your sales office
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Totally Enclosed Fan Cooled -
TEFC (IP55) water tight and dust tight enclosure
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Squirrel cage rotor / Aluminum
die cast
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V-ring slingers on both
endshields (586/7 frame equipped with labyrinth tachonite seal as standard)
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All 3600RPM and 1800RPM motors
are supplied with ball bearings as standard. Roller bearings are supplied as
standard on frames above 404T, 1200RPM and 900RPM
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1045 heat treated and stress
relieved carbon steel shaft (4140 for roller bearings motors)
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NEMA dimensions
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Class F insulation for all
frames, all insulation materials are Class H (180ºC) except motor leads (Class
F)
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Temperature rise: Class B
(80ºC)
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NEMA ratings design B
(Design B torque rating on nameplate can be re-plated for Design C)
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Service Factor: 1.25 up to
100HP 1.15 from 125HP and up
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Continuous duty (S1)
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104ºF (40ºC) ambient
temperature
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Altitude: 3300 ft (1000m)
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NPT threaded terminal box
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F1 mounted T-Box F2 mounting
capable
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Stainless steel nameplate AISI
316 with laser etching
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Paint: Synthetic enamel alkyd
resin base (exceeds ASTM B117 salt spray test)
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Color: RAL 5007 - Blue (II, IV
and VI pole)
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Automatic drain plugs -
pressure compensated
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Regreasable bearings, positive
pressure lubrication system (frames 254T and up)
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Thermistors type PTC (1 per
phase) from frames 324T and up
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Continuous flow class ?H?
resin insulation system
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Gasketed conduit box
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Roller bearing models
available
MGI Part 31 rating for use with VFD - 4:1 constant torque speed range Speed
range can be extended with optional
NOTES
Motors are nameplated Class I Div. II Groups B, C and D .
All motors are tested according to IEEE 112 std. - method ‘B’ or C390 CSA
All WEG motors are energy efficiency verified by UL in addition to the DOE.
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