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NEMA MG-1 MOTORSCC Number by DOE – Nema Premium Efficiency tab 12-1204/2021
FELMElectric MotorsGeneralFELM NEMA motors FT series, TEFC, is designed and manufactured according with the latest versionof NEMA MG1 construction. TEFC motor with design B meets MG1 standard 12-12.All motors are with UL/CSA certificate, and suitable for VFD application. *1All motors are with service factor 1.15F1 & F2 are interchangeable from 143T to 449T.Frame 143T through to N6808, 3600, 1800, 1200 and 900RPM, continuous duty at 40 C, 230/460V60HZ. 575V available on request.BearingsOversized, world top brand of life sealed with pre-lubricated ball bearing up to 280T, andre-greaseable bearings from 320T and up.World top brand of high performance grease applied for longer operation life.Grease pipes and relief vents with plug are provided for all open bearing construction.InsulationAll motors are with excellent insulation system class F, temperature rise B.Conduit BoxOversized conduit box made of fabricated steel provides big space for connections.Diagonally and rotatable in 90 positions.Cast iron conduit box from frame N5007 and up.*1 Meets NEMA MG1 part 31, CT 20:1 VT 4:1, wider range available on request (also depends on the inverterselection)1
Cooling FanIncreased safety external cooling fan meets non-sparking feature, and aluminium fan/steel fan availableon request. ?Grounding and bearing protectionAegis shaft grounding ring available on request.Insulated bearing or insulated bracket (size 447 and up ) available on request.AuxiliariesSpace heater, Wind RTDs, bearing RTDs, SPM vibration detecting available on request or specificapplications.CoolingCooling air flows from the non-drive-end to the drive-end. The fan is independent of the direction ofrotation of the motor. When the motor is installed, air flow should not be impeded to enter in themotor cowl. The following minimum dimension BL should be adopted. Cooling are flown from the NDEto the DE side. The minimum space between the cooling fan and the wall or barrier must be kept forsufficient cooling.BL(mm)2
Ambient Temperature and AltitudeThe rated outputs specified in the datasheet are based on ambient temperature of 40 C (104 F) and at1000m (3300ft) altitude. Please refer to the multiplication factors in the table, in case of different ambienttemperature and/or altitude.Typical torque-speed curve is shown in the belowTN Full load torqueTL Locked rotor torqueTU Pull up torqueTB Breakdown torqueNn Full load speedNs Synchronous speedFELM motor with design B has the locked rotor torque (LRC) performance meets MG1 standard value orlarger.3
Variable Frequency Drive applicationVFD becomes popular in many applications, providing small starting current, slow starting speed, andsignificant energy saving. The following shall be considered with apply standard motor as VFD.1. OperationVoltage(Ampere) fed by VFD is not pure sinusoidal which could affect the motor performance on loss,vibration and noise. In additional, the changes on distribution of losses could affect the temperaturebalance inside the motor, and lead to higher bearing temperature.2. Frequency rangeThe actual speed of the motor driven by inverter could be big different than the rated. Make sure donot exceed the maximum allowed speed or critical speed of the motor. Refer to us if necessary.The followings shall be checked and considered when the inverter runs the motor at a speed higherthan rated.Maximum torque of the motorBearing constructionLubricationCritical speedShaft sealsVentilationFan noiseThe motor may lose its cooling capacity when run at low speed, which leads to higher windingtemperature and bearing temperature. A forced ventilator can help to increase the cooling. The Checkof lubrication performance at low speed is also necessary.3. LubricationUsually the effectiveness of lubrication can be indicated by measuring bearing temperature. Theinterval of lubrication shall be reduced when the bearing temperature higher than 80 C (176 F).If the motor continuously runs at low speed, as well as low ambient temperature, the standard greasemay be not sufficient and special grease may required. Consult FELM for more information.When the motor equipped with life sealed bearing, the lift time may be different than standardapplication.4
4. Insulation protectionMost of inverter has the IGBT unit, with fast switching, steep voltage pules and cable reflections.This will provide large stress to winding insulation of the motor. The protection solution shall beconsidered as per table below.5. Shaft current protectionThe motor shall avoid to have shaft voltage larger than 300mv, otherwise the risk of bearingdamaging is rising. Aegis grounding ring or similar device, insulated bearing or insulated bracket areavailable on request, to protect the bearing.6. Cable, grounding and EMCThe motor shall be connected to inverter by shielded cable and EMC gland.5
TEFC Design B Premium efficiency Standard Motor208/230/460/575V. 60Hz. – FT SeriesFull Load AmpsHpkWRPMEff. %Power FactorFull LoadFull LoadTorque (%)Full Load TorqueLb.Ft.Frame230/460V or 460V575VLocked RotorBreak -downSound .86175250*6
TEFC Design B Premium efficiency Standard Motor230/460V, 460V, 575V 60Hz – FT seriesFull Load AmpsHpkWRPMEff. %Power FactorFull LoadFull LoadTorque (%)Full Load TorqueLb.Ft.Frame230/460V or 460V575VLocked RotorBreak -downSound .86175250** data on request7
Dimensions FT seriesFELM NEMA TEFC Design B premium efficiency motors, foot mount, F1Frame 143T 145TDimensions 41.422.252.2580.770.1880.8751.4117.25.57.5Frame 182T 184TSizeDimensions 4.55.50.451.62.752.759.87Note:Dimensions subject to change, please ask for dimensional drawing when T1.7818.26.59.271.731.7818.26.59.271.73
Dimensions FT seriesFELM NEMA design B premium efficiency motors, foot mount, F1SizeDimensions 832.832.832.832.83
Dimensions FT seriesFELM NEMA design B premium efficiency motors, foot mount, F1Dimensions ote:Dimensions subject to change, please ask for dimensional drawing when ordering.10
NAMEPLATE FT SERIEFT 182TAll data (technical, dimensions, etc.) listed in the tables are indicative and not binding. The guaranteed values areupon request. Felm srl reserves the right to change the project, the technical characteristics and dimensions at anytime without previous notice.11
CONTATCSHead QuarterFELM srlVia Morandi (Industrial Area)20010 Inveruno (Mi) ItalyTel. 39 02 97 289 454Tel. 39 02 97 288 320Fax 39 02 97 289 923E-mail home@felm.itFELM Office Middle EastJebel Ali Free Zone, Warehouse no. FZS1-BM07,PO Box 263632, Dubai, United Arab EmiratesOffice Ph. 971 (04) 887 9767mobile 971 50 550 1322Email: ayman.abdallah@felm.itFELM Office GermanyHeinrich-Busold-Strasse 47D-61169 Friedberg (Hessen), GermanyTel (Off): 49-6031-721606Mobile: 49-172-6729011Fax: 49-6031-721610Email: Jayant@jk-conrep.deFELM Office ChinaAdd: Room 1002,Building 3#,No 139 Rd.SongShan,Jianye, Nanjing, Jiangsu, ChinaFax: 86-25-87797622Tel: 86-15077829999Email: lidongming1974@vip.sina.comFELM Office UKThe Foundry, WadebridgeCornwall, PL277PGUnited KingdomTel (Off): 441208 816543Mobile: 447791717488Email: Toby@felm.co.ukWORLD WIDE SERVICEMobile 39 355 69 53 804E-mail service@felm.it
NEMA MG-1 MOTORS CC Number by DOE –Nema Premium Efficiency tab 12-12 04/2021. 1 General FELM NEMA motors FT series, TEFC, is designed and manufactured according with the latest version of NEMA MG1 construction. TEFC motor with design B meets MG1 standard 12-12. All motors are with UL/CSA certificate, and suitable for VFD application. *1 All motors are with service factor 1.15 F1 & F2
