Standardmotoren - VEM Group

1 Standardmotoren2 Standard motorsContentsProduct description 2/2 Overview of technical data 2/5 Motor selection data Series for Premium Efficiency IE3 2/6 Series for High Efficiency IE2 2/14 Series for Standard Efficiency IE1 2/26 Series to 24-pole motors 2/30 Series K21R-S2 for duty type S2, 10/30/60 min 2/32 Series K21R-S3 for duty type S3, 25/40/60 % 2/40 Series K21R-S6 for duty type S6, 25/40/60/80 % 2/48 Series for two speeds 2/56 Series for three speeds 2/75 Series for four speeds 2/83 Bearings 2/84 Terminal boxes 2/106 Dimensions 2/109 Einbaumotoren2/2 Low voltage electrical machines Product descriptionElectric drives are today used throughout industry in the most diverse variants.

2 With their specific properties, they determine the efficiency of countless production processes. The VEM range of three-phase asynchronous motors satis-fies all customer demands relating to application versatility, improved operating data, environmental compatibility and maximum operating reliability. Aimed at the broad European market, VEM motors promise: high motor efficiency as the basis for energy-efficient performance universal applications and reduced stock levels thanks to IP 55 protection as standard (higher degrees of protection up to IP 66 upon request) options for terminal box arrangements on the left, top or right enhanced service life, reliability and thermal overload capacity to thermal class F with corresponding thermal reserves as standard (thermal class H available as a special version)

3 Environment-friendly operation based on a low-noise ventilation system compliance with East European standards free choice between a classic IEC/DIN series and a pro-gressive series based on the mounting dimensions and motor sizes of IEC 60072 facility to incorporate components such as encoders, tacho generators, brakes, speed monitors or forced ventilation units to solve the customer s individual control designFigure: Design of a VEM standard motor Environment-friendly power generation, the use of renew-able energy sources and increased energy awareness are factors which create new challenges for manufacturers of asynchronous motors.

4 In response to the corresponding market trends, VEM has taken steps to achieve compliance with energy efficiency classification IE3 across the whole range of standard motors. Motors for other energy efficiency classes, such as IE2 or IE1, remain available in accordance with the exceptions defined in the European Commission regulations (EC) No. 640/2009 and (EU) No. 4/2014 or else the local regulations of the intended markets (see also the section International efficiency classification in Chapter 1).VEM has remained true to its proven concept of grey cast iron housings for the new standard motor series.

5 This robust, low-vibration construction permits use in the most varied applications. The range of modular built-on acces-sories has also been extended continuously over the past years, guaranteeing fast deliveries and universal modifi-cation options for standard motors. For optimum motor efficiency, the mid-size range incorporates copper die cast rotors manufactured on the basis of the very latest produc-tion mounting dimensions of all efficiency classes corres-pond to those defined in IEC 60072-1 and EN voltage electrical machines2 Type / SizeMaterialFanFan cowlStandardSpecial version1)StandardSpecial version1) 56-132 PlasticCast aluminiumSheet 132-225 PlasticCast aluminiumPlasticSheet 250-315 PlasticCast aluminiumSheet 355 Cast aluminium-Sheet steel-1)

6 Possible at extra charge, upon request Motors comprise the following main components: Stator housing with laminated core and winding End shields with bearings Die-cast rotor (aluminium or copper) Fan with fan cowl Terminal boxThe motor space is defined by the housing, the two end shields, the outer bearing cover, the shaft seal and the terminal box gasket. Stator housings as already described are always manufactured in grey cast iron, with radially or horizontally/vertically arranged cooling ribs. A flange surface with a corresponding opening to the housing inner is cast-on for mounting of the terminal box and terminal base.

7 The flange surface is covered by the terminal box gasket. The terminal box can be arranged on the right, on the left or on the and ventilationThe motors are fitted with radial fans made from plastic or cast aluminium alloy, which provide cooling independently of the running direction of the motor (IC 411 to IEC/EN 60034-6). If requested by the customer, 2-pole motors with smaller shaft heights can also be provided with a low-noise, direction-dependent fan. In size 355, 2-pole motors are sup-plied with direction-dependent fans as installing the motors, a minimum clearance between the fan cowl and the wall (dimension BI) must be observed to ensure correct cooling.

8 Fan cowls are manufactured either in sheet steel or in the mid-size range in dimensionally stable, impact-resistant plastic, which enables construction of an especially quiet-running motor motors Pole-changing motors are incorporated into drives with either constant or quadratically increasing load torque, as appropriate to the load torque behaviour of the driven machine. The different characteristics are distinguished accordingly in the selection tables. Motors are designed for a single rated voltage, 230 V, 400 V or 690 V, and are intended for direct starting via the pole sequence.

9 Versions for 60 Hz frequency or special voltages in accordance with IEC 60038 are is realised with two separate windings (two speeds) one winding with Dahlander connection (two speeds) two separate windings, one with Dahlander connection (three speeds) two separate windings, both with Dahlander connection (four speeds)While a winding with Dahlander connection can only achieve a speed ratio of 1:2, the option of two separate windings enables the realisation of further speed stages, albeit with lower outputs compared to the corresponding basic version.

10 Single windings are configured with star (Y) or delta ( ) connection, Dahlander windings with /YY or Y/YY applicable assignments between connection configura-tions and numbers of poles are indicated in the motor selec-tion data. Star-delta starting can be realised for the largest pole number (slowest speed) if the operating connection is . In case of two separate windings with at least one connection, the non-live connection must be specificationsFor all classified series with designations starting , energy efficiency is determined in accordance with IEC/EN 60034-2-1.