Technical data - General Purpose Three-Phase Induction Motors
1 / 11Pages

General Purpose 3-phase Induction Motors INTRODUCTION New efficiency classes for the low-voltage three-phase motors (IE = International Efficiency). Along with the international discussion on energy efficiency a worldwide harmonized energy efficiency classification system has been established for low-voltage three-phase asynchronous motors. For many years low-voltage three-phase motors in the European Union have been sold in three efficiency classes EFF3, EFF2 and EFF1. Aside from this, many different efficiency classification systems have been introduced and well-proven in many countries all over the world. This was the reason for the International Electrotechnical Commission IEC to develop and publish an energy efficiency standard which replaces all previous national issues. In parallel IEC developed and issued a new standard for determining motor efficiency. The new standard IEC 60034-30 defines and harmonizes worldwide the efficiency classes IE1, IE2 and IE3 for low-voltage three-phase motors in the power range from 0.75 kW to 375 kW (2p=2, 4, 6): IE1 = Standard Efficiency IE2 = High Efficiency IE3 = Premium Efficiency From now motors can be offered and sold with the new classes IE1, IE2 and IE3. In that case the efficiency has to be determined according to the new requirements given in the IEC 60034-2-1 standard. According to the Comission Regulation (EC) No 640/2009 (introduced in July 2009) the required efficiency class of general-purpose motors (introduced to the market in future) will be as follows: From 16 June 2011, motors placed for the first-time on the market shall have a minimum efficiency class of IE2. From 1 January 2015: motors with a rated output between 7.5 - 375 kW shall have a minimum efficiency class of IE3, or IE2 if they are operated/equipped with electronic speed control (VSD). From 1 January 2017: motors with a rated output between 0.75 - 375 kW shall have a minimum efficiency class of IE3, or IE2 if they are operated/equipped with electronic speed control (VSD). Electronic speed control is carried out using a frequency converter (VSD) that adjusts the speed of the motor - and therefore the torque produced - based on the energy needed. Cantoni Group IE1 motors Cantoni Group 2SIE motors (IE2) Cantoni Group has offered energy efficiency motors for several years. Our motors of SEE series fulfil EFF1 standards according to CEMEP. We carry out intensive research and measurement of the motors according to the new standards IEC 60034-30 and IEC 60034-2-1.

General Purpose 3-phase Induction Motors EFFICIENCY OF MOTORS Cantoni Motor has in offer general purpose standard efficiency motors of (2) Sg, Sh series which fulfil IE1 class requirements according to the IEC 60034-30 standard. The present catalogue describes the electric motors which belong to the efficiency class IE2 (High Efficiency) and motors excluded from the IEC 60034-30 standard (motors with 2p = 8, 10, 12 and with rated output below 0.75kW and above 375kW). Comparison between the efficiency of Cantoni Group motors (for example 2p=4) and efficiency class IE1/IE2 requirements...

General Purpose 3-phase Induction Motors RATINGS - TOLERANCES Permissible deviations between real values and catalogue values according to the IEC 60034-1: D n = ±30%(ns-nN) for PNL 1kW Locked rotor current IL/IN Locked rotor torque TL/TN min (TL/TN) = -15% (TL/TN) max (TL/TN) = +25% (TL/TN) Breakdown torque TB/TN Moment of inertia J Sound pressure level LpA [dB] STANDARDS The electric motors are manufactured according to the international standards: Rating and performance Methods for determining losses and efficiency Classification of degrees of protection Methods of cooling Symbols of...

General Purpose 3-phase Induction Motors INSULATION CLASSIFICATION The insulation system of an electric motor is determined by a given insulation class on the basis of its thermal resistance. This thermal resistance should be guaranteed by the entire set of electric insulating materials used in the motor insulating system. Thermal resistance classification is related to the temperature of the hotspot in the insulation occurring during rated operating conditions of the electric motor, allowing for the highest permissible rise in average temperature. This rise should be selected so that at...

General Purpose 3-phase Induction Motors INTERNATIONAL PROTECTION IP According to the IEC 60034-5 standard the electric motors are provided with IP code which determines the degree of protection (ensured by the housing) against penetration of solid matter and fluids. PROTECTION AGAINST PENETRATION OF FLUIDS PROTECTION AGAINST PENETRATION OF SOLID MATTER 1st digit MECHANICAL PROTECTION Protected against vertically falling drops of water Protected against solid bodies larger than 50 mm Protected against solid bodies larger than 12 mm Protected against solid bodies larger than 2.5 mm Protected...

General Purpose 3-phase Induction Motors MOUNTING ARRANGEMENTS According to the IEC 60034-7 standard Horizontal shaft Vertical shaft Designation Frame size Frame size Code II

General Purpose 3-phase Induction Motors PERMISSIBLE LOADS ON THE SHAFT END Frame size Horizontal operation Vertical operation Frame size Horizontal operation Vertical operation PERMISSIBLE LOADS ON THE SHAFT END for motors 2Sg (2p = 8 ÷ 12) FR(x = 0)

General Purpose 3-phase Induction Motors VERSION WITH ROLLER BEARINGS for motors 2SIE315 and 355 Mechanical Size Horizontal mounting Vertical operation Permissible radial forces Permissible axial forces FX0 FXmax FA Motor type Number of poles Length of shaft extension E(mm) kN kN kN 2SIE 315 ML 4 170 27 13 3,5 on request 6 170 29 12 4 on request 2SIE 355 ML 4 210 22 18 5 on request 6 210 23 15 5,5 on request 2SIE 355 H 4 210 27 17 6 on request 6 210 29 15 7 on request VERSION WITH ROLLER BEARINGS for motors SEE355 and Sh355-500 Mechanical Size NU222 EM1C3 NU322 EM1C3 on request on request...

General Purpose 3-phase Induction Motors on request on request on request on request on request on request on request on request on request on request PTC PTC PTC PTC PTC PTC Mark A Pt 100 Thermal protection of bearings Temperature sensors in winding Optional rotation of the terminal box Number of cable outlets Frame size Other specifications dependent on the frame size: no no no no no no no no on request on request on request on request on request on request on request on request Pt 100 * right position of the terminal box for 2Sg motors series Frame size The bearings in basic version of...