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PRODUCTS // WEG // NEMA W22 premium efficiency motor


High performance with maximum energy efficiency is the goal of the new WEG electric motor. High efficiency and Low cost of Ownership throughout the entire motor lifetime have been the basis for the W22 development. A design created to maximize performance and energy savings.

  • Efficiency Certification number CC029A according to US Department of Energy Regulations
  • Three-phase, 2, 4, 6 and 8 pole, 60Hz
  • Voltage: 208-230/460V
  • No derating for 50Hz operation up to 250 HP. For 300 HP and up, please contact our sales office
  • Totally Enclosed Fan Cooled - TEFC (IP55) water tight and dust tight enclosure
  • Squirrel cage rotor / Aluminum die cast
  • WSeal® sealing on both endshields from frame 364T/5T up to 504/5T (586/7 frame fitted with Taconite Labyrinth as standard)
  • Ball bearings are supplied as standard
  • 1040/45 heat treated and stress relieved carbon steel shaft (4140 for 404/5T upwards in 4, 6 and 8 pole motors)
  • Class “F” (ΔT = 80K) insulation for all frames
  • Continuous flow insulation system with class “H” wire
  • Temperature rise limited to Class “B” (80K)
  • NEMA ratings design “B”
  • Service Factor: 1.25 up to 100HP 1.15 from 125HP and up
  • Continuous duty (S1)
  • 104ºF (40ºC) ambient temperature
  • Altitude: 3300 ft (1000m
  • NPT threaded terminal box
  • Stainless steel nameplate with laser etching
  • Paint: Synthetic enamel alkyd resin base (240 hours minimum ASTM B117 salt spray test)
  • Color: RAL 6002 – Green
  • Fitted with closed rubber drain plug
  • Regreasable bearings, With grease fittings in DE and NDE bearings
  • Gasketed conduit box
  • MGI Part 31 rating for use with VFD - 20:1 constant torque speed range up to 250HP and 12:1 above 250HP. Speed range with constant torque can be extended with optional Blower kit
  • Special voltages
  • Specially designed shaft
  • Threaded NDE shaft side for encoder assembly
  • Space heaters (standard on 586/7 frames)
  • Labyrinth tachonite seal available for all ratings
  • Thermostats or RTD's (PT100)
  • Additional terminal box
  • Drip cover (canopy) for shaft down applications
  • Cable glands
  • C Face and NEMA D flanges for all ratings
  • Roller bearing models available
  • Special epoxy painting
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