Three-phase asynchronous motors for low voltage with ssquirrel-cage rotor
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Three-phase asynchronous motors for low voltage with ssquirrel-cage rotor - 2

Contents Introduction5Technical explanations7Basic version67Energy saving motors as specified in CEMEP135Energy saving motors as specified in EPAct139Motors for use on a frequency inverter143Brake motors149Motors for use aboard ships163Forced-ventilated motors,cooling method IC 416171Non-ventilated motors,cooling method IC 410175Explosion protected motors in version"Increased safety e",EEx e II 2G179Explosion protected motors in version"Flame-proof enclosure",EEx d II 2G / EEx de II 2G189Explosion protected motors in version"Non-sparking",EEx nA II 3G193Dust-explosion protected motors...

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Three-phase asynchronous motors for low voltage with ssquirrel-cage rotor - 6

Technical Explanations Standards and regulationsProgressive coordination of outputDesign versionCooling and ventilationDegree of protectionVibration behaviourBearings/Bearing lubricationUse of cylindrical roller bearings Shaft end and bearing loadsNoise behaviourPaint finishShaft endsDesign voltage and frequencyDesign voltage range and design frequency rangeDesign outputMotor torqueAmbient temperatureOverloadingDesign efficiency and power factorRestarting during residual field and phase oppositionMotor protectionDuty typesPole-changing motorsEnergy-saving motors as specified in CEMEP High...

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Three-phase asynchronous motors for low voltage with ssquirrel-cage rotor - 8

TitleDIN EN/DIN VDEIEC > Rotating electrical machines, rating > DIN EN 60034-1IEC 34-1 and performance > IEC 85 Rotating electrical machines, > DIN EN 60034-2IEC 34-2 Methods for determining losses and efficiency Induction motors, type IM B3, mounting dimensions > DIN 42673(IEC 72) and relationship frame sizes output ratings Induction motors, type IM B5, IM B35, IM B14, mounting > DIN 42677(IEC 72) dimensions and relationship frame sizes ֖ output ratings Terminal markings and direction of rotation for > DIN VDE 0530 Teil 8IEC 34-8rotating electrical machines Rotating electrical machines, >...

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Three-phase asynchronous motors for low voltage with ssquirrel-cage rotor - 9

Regulations Cooling air temperaturePermissible limits of temperature rise in K(measured by resistance method) thermal class CAEBFHDIN EN 60034-140607580105125IEC 34-140607580105125 Great Britain BS40607580105125 Italy CEI40607080105125 Sweden SEN40607080105125Norway NEK4060-80105125Belgium NBN40607580105125 France NF40607580105125 Swizerland SEV40607580105125 Germanischer Lloyd45557075100100 American Bureau of Shipping5050657090115 Bureau Veritas4550657090110 Norske Veritas4550657090115LloydБs Register4550657095110 Russian Register 40/45607585110125 > VEM three phase motors with...

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Three-phase asynchronous motors for low voltage with ssquirrel-cage rotor - 10

The motors are equipped with radial plastic or aluminiumalloy fans, which cool independently of the direction of rotation of the motor (IC 411 as specified in DIN EN 60034-6).Attention is to be paid that a minimum distance of thefan cover from the wall is maintained (dimension Bl) when the motor is being installed.TypesMaterialsFanFan coverKPER/KPR/K21R 56-112Plastic > 1) Sheet steelPlastic > 2) K21R/K11R 132-225Plastic > 1) Sheet steelPlastic > 2) K21R/K11R 250-315LPlastic > 1) Sheet steelK21R 315LX2, 4Cast aluminium alloySheet steelK22R 355Cast aluminium alloy > 3) Sheet steelK20R...

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Three-phase asynchronous motors for low voltage with ssquirrel-cage rotor - 12

Permissible shaft end loading The size of the permissible shaft end loading is determined by the following principle criteria:- permissible bending of the shaft - shaft end fatigue strength - bearing lifetimeThe permissible shaft end loading (radial and axial forces)is based on a rated bearing lifetime of 20,000 hours and a security against fatigue failure of > 2.0. The following figure is given as a load diagram. F > r and F > a are dependent on thetransmission members used, i.e. on the axial and radial forces occurring at these transmission members including their weights.The forces are...

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Three-phase asynchronous motors for low voltage with ssquirrel-cage rotor - 13

Paint systems Size 56 132T - all components synthetic basic primer, layer thickness ֢ɥ 30 m > Normal finish ?Suitable for Ցmoderate climatic group as specified in IEC 721-2-1 Weather protected and non-weather protected loca- tions, up to 100 % relative air humidity at temperatures up +30 ѰC for a short time, up to 85 % relative air humidity at temperatures up to +25 C continuously Paint systems Тɥ 30 m- finish coat water-soluble paint with layer thicknesses 30 յm to 60 m-Special requirement dual component paint, layer thickness Sizes 56 Ֆ 132T -all components apart from plastic parts...

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Three-phase asynchronous motors for low voltage with ssquirrel-cage rotor - 14

Motors that are to be used for mains voltage with a general tolerance of 10 % as specified in DIN IEC 38 are to beselected according to the corresponding design voltage listed in the technical tables. The design voltage range restricted by U > N u and U > o is also given there. If the motors are connected to voltages between 95 %and 105 % of the design voltage range і this will corre- spond to the relevant mains voltage value as specified in DIN IEC 38 with 10 % і it will already be permissible to y Related voltage U/U > N Voltage and frequency limits for motors DIN EN 60034-1 exceed the...

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Three-phase asynchronous motors for low voltage with ssquirrel-cage rotor - 15

Efficiency η and the power factor cos ϕ are given in thelists of the motor selection data. > It is possible to restart all motors after a network failure with 100 % residual field. > The following variations of motor protection are possible, if ordered: -Motor protection with thermistor temperature sensors in the stator winding-Bimetal temperature sensor as opener or closer in the stator winding- Silicium diodes- Resistance thermometer to monitor winding or bearing temperature- Bearing vibration diagnosis > Special types of operation for switched operation, short- time operation or...

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Three-phase asynchronous motors for low voltage with ssquirrel-cage rotor - 16

LoadElectric losses Temperature Maximum temperature TimeOperation with constant load > ∆ t LoadElectric losses Temperature Maximum temperature TimePeriod of one cycleOperation with constant load At rest and de-energised Cyclic duration factor = > p / T > C

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Three-phase asynchronous motors for low voltage with ssquirrel-cage rotor - 17

∆ t LoadElectric losses Temperature Maximum temperature Time Period of one cycleStartingOperation with constant load At rest and de-energised Cyclic duration factor = ( > D + ∆ t > p )/ T > C LoadElectric lossesTemperatureMaximum temperatureTimePeriod of one cycleStartingOperation with constant loadElectric brakingAt rest and de-energised Cyclic duration factor = ( ∆ t > D + ∆ t > p + ∆ t > F )/ T > C

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