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Frequency converter drives for Industrial performance motorsSquirrel cage induction motors offer excellent availability,reliability and efficiency. With a frequency converter – avariable speed drive (VSD) – the motor will deliver even bettervalue. Instead of running the motor at full speed all the time,the variable speed drive enables it to be run at a speed basedon actual needs. This also makes it possible to control theprocess accurately and in some cases even to improve thecapacity of the process by operating at speeds higher thanthe nominal.In contrast to conventional direct on line (DOL) applications,VSDs make smooth starting possible. This significantlyreduces the stress to the motor and the driven apllicationcaused by starting. Smooth starting also means that thesupply network is not affected by high starting currenttransients, a factor which can be taken into account in thedesign of the network.The utilization of ABB Industrial performance motors togetherwith variable speed drives, and especially with ABB StandardDrives, usually provides substantial energy savings as thespeed and thus the power required by the process can beoptimized. Energy savings deliver not only environmental butalso financial benefits, meaning that the combination of anABB Industrial performance motor and a variable speed driverepresents a cost effective solution for various applications.ABB’s Industrial performance range includes motors suitablefor use with frequency converters, and especially with ABBStandard Drives. For more demanding applications the use ofABB Process performance motors and ABB Industrial Drivesis recommended.The voltage drop in the supply cables must be taken intoconsideration, especially in cases where long supply cablesare used.2. Operating speed, vibrations and shaft sealsIndustrial performance motors are designed to operate overa wide speed range and in most cases also at significantlyhigher speeds than the nominal speed. The maximum speedcan be found by using the DriveSize tool. In addition to themotor speed range, please ensure that the maximum orcritical speed of the entire application is not exceeded.If a particularly low level of vibration is required, motors withimproved balancing should be used.Guideline maximum speed values for Industrial performancemotors are shown in Table 1 (motors with aluminum frames)and Table 2 (steel frames). Exact values are available onrequest.Table 1. Guideline maximum speed values for Industrialperformance motors with aluminum framesSpeed r/minMotor 45004500225-28036003600Table 2. Guideline maximum speed values for Industrialperformance motors with steel framesSpeed r/minCorrect dimensioning and utilization of appropriate variantsensures that ABB Industrial performance motors will providethe maximum benefit and best possible availability. Thefollowing points should therefore be taken into account whenselecting the motor:1. DimensioningThe voltage (or current) fed by the frequency converter is notpurely sinusoidal. This may increase motor losses, vibrationand noise levels. Furthermore, the distribution of losses maybe changed, which may also affect the motor’s temperaturerise. The motor and converter must therefore be evaluated asa combination to ensure that the dimensioning is correct.When using ABB converters, please use ABB’s DriveSize programfor dimensioning purposes. This tool utilizes dimensioningrules based on comprehensive combined type tests.For manual dimensioning, please note that the loadability (orload capacity) curves provided in this catalogue (Figure 2 and3) and in the respective manuals are indicative only. Exactvalues for the specific motor and converter are available onrequest. In addition to thermal dimensioning, an adequatetorque margin must be maintained for stability. The maximumtorque of the motor must be at least 30 percent higher thanthe load torque over the whole duty range.10 LV Industrial performance motors EN 02-2010 ABB LV MotorsMotor size2-pole4-pole280 SA, SMA, MB36002600280 MC, MD36002300315 SA, SMA, MB, LA36002300315 LB, LC36002400355 SA, SB, MA, MB, LA, LB36002000355 LKD36001800400360018003. VentilationWhen the motor is operated at low speeds the coolingcapacity of the fan decreases, reducing the motor’s loadcapacity. A separate constant speed fan can be used toincrease cooling capacity.At high speeds, the use of metal fans instead of plastic onesshould be considered. If a low noise level is required, the useof unidirectional or special low noise fans is recommended.

In the case of continuous operation at very low speeds aswell as at very low temperatures (below -20 C), the lubricationcapabilities of standard greases may not be sufficientand special greases with additives are needed. For moreinformation, please contact ABB.When motors are equipped with sealed bearings, i.e. bearingsgreased for life, it must be noted that if the operatingtemperature differs from the design temperature, the bearinglifetime will also be different. More information on bearinglifetimes can be found in the product-specific sections of thiscatalogue and in the relevant manuals.The use of so-called conductive greases for eliminationof bearing currents is not recommended due to their poorlubrication characteristics and low conductivity.Table 3. Selection of winding insulation and filters in caseof ABB ACS800 or ACS550 drives with uncontrolled DCvoltage.Nominal supply voltageUN of the converterWinding insulation and filters requiredU N 500 VABB Standard insulationU N 600 VABB Standard insulation dU/dt filtersORABB Special insulation (variant code 405)U N 690 VABB Special insulation (variant code 405)ANDdU/dt-filters at converter output600 V UN 690 V ANDcable length 150 mABB Special insulation (variant code 405)For more information on dU/dt filters, please see the relevantABB Drives catalogues.Figure 1. The maximum allowed phase-to-phase voltagepeaks at the motors terminals, as a function of the pulserise time2,202,00Peak voltage ULL, kV4. LubricationIn variable speed applications, the bearing temperature variesas a function of the speed and motor load. In such cases,the most accurate re-lubrication intervals can be obtained bymeasuring the bearing temperature under normal operatingconditions. If the measured temperature is higher than 80 C,the re-lubrication intervals specified in the motor manualmust be shortened or lubricants suitable for high operatingtemperatures must be used. See the ABB Low voltage motormanual.1,801,601,401,20ABB Special Insul.In cases where the instructions shown in the table cannot beapplied, and for other converters, selection must be based onthe voltages present at the motor terminals.The allowed phase-to-ground voltage peaks at the motorterminals are:– ABB Standard Insulation 1300 V peak– ABB Special Insulation (variant code 405) 1800 V peakThe maximum allowed phase-to-phase voltage peaks atthe motor terminals, as a function of the pulse rise time,are shown in the Figure 1. The highest curve, “ABB SpecialInsulation”, applies to motors with special winding insulationfor frequency converter supply, variant code 405, see variantcode for availability.1,00ABB Standard Insul.0,800,000,200,400,600,801,001,20Rise time 10-90 %, MsM0004085. Winding insulationA frequency converter supply causes greater voltage stressesin the motor windings than a sinusoidal supply. The insulationsystem and, in some cases, filters must be selected accordingto the voltage and converter type in question. See Table 3 forinformation on selecting the insulation system and filters.6. Bearing currentsBearing voltages and currents must be avoided in allmotors to ensure reliable operation of the entire application.Assuming the use of ABB ACS800 or ACS550 drives, withuncontrolled DC voltage, insulated bearings (variant code701) and/or properly dimensioned filters at the convertermust be used according to Table 4. For other alternatives andconverter types, please contact ABB. When ordering, clearlystate which alternative will be used.For more information about bearing currents and voltages,please see the “Bearing currents in AC drive systems” FactFile or contact ABB.Table 4. Prevention of bearing currents in motors usedwith ABB’s ACS800 and ACS550 drives with uncontrolledDC voltage. For other alternatives and converter types,please contact ABB.Nominal Power (PN)and / or Frame size (IEC)Preventive measuresP N 100 kWNo action neededP N 100 kWInsulated non-drive end bearingORIEC 315 Frame size IEC 355P N 350 kWInsulated non-drive end bearingORANDIEC 400Common mode filter at the converterABB LV Motors LV Industrial performance motors EN 02-2010 11

Common mode filtersCommon mode filters reduce common mode currents andthus decrease the risk of bearing currents. Common modefilters do not significantly affect the phase or main voltages onthe motor terminals. For more information, please see ABBDrives catalogues.Insulated BearingsABB uses bearings with insulated inner or outer races.7. Cabling, grounding and EMCThe use of a frequency converter sets higher demands onthe cabling and grounding of the drive system. The motormust be cabled using shielded symmetrical cables and cableglands providing 360 bonding (also called EMC glands,variant code 704). For motors up to 30 kW asymmetricalcables can be used, but shielded cables are alwaysrecommended, especially if there are sensitive components inthe driven application.For motors with frame size IEC 280 and upward, additionalpotential equalization is needed between the motor frameand the machinery, unless the motor and driven machine areinstalled on a common steel base. When a steel base is usedfor potential equalization, the high frequency conductivity ofthe connection must be checked. More information aboutgrounding and cabling for variable speed drives can be foundin the manual “Grounding and cabling of the drive system”(Code: 3AFY 61201998 R0125 REV B).In order to meet EMC requirements, special EMC cable(s)must be used in addition to the correct cable gland mounting,with special, extra earthing pieces. Please refer to thefrequency converter manuals.Figure 2. Loadability curves with ACS800 converters with DTC controlNote. Loadablity curves for temperature rise F only applicable for motors having nominal temperature rise according toclass B.160-400M000528M000529160-400Figure 3. Loadability curves with ACS550 convertersNote. Loadablity curves for temperature rise F only applicable for motors having nominal temperature rise according toclass B.160-40012 LV Industrial performance motors EN 02-2010 ABB LV MotorsM000531M000530160-400

Industrial performance aluminum motorsTotally enclosed squirrel cagethree phase low voltage motorsSizes 63 to 280, 0.12 to 90 kWwww.abb.com/motors&generators Motors Low voltage motors Industrial performance motorsABB LV Motors LV Industrial performance motors EN 02-2010 13

Mechanical designStatorStator framework is made aluminum alloy. Frame sizes 63and 180 have aluminum feet and sizes 200 to 280 have castiron feet.The bearing shields of sizes 160 to 280 are made of cast iron.Drain holesMotors that will be operated in very humid or wetenvironments and especially under intermittent duty shouldbe provided with drain holes. The appropriate IM designation,such as IM 3031, is specified on the basis of the method ofmounting the motor.Motors are supplied with drain holes both on D-end andN-end.When mounting arrangement differs from foot mountedIM B3, please mention variant code 066 when ordering.See variant codes 065, 066 and 076 under the heading“Drain holes”.M000015Motors are provided with closable plastic plugs in the drainholes (see diagram below). The plugs will be open on delivery.When mounting the motors it should be ensured that thedrain holes face downwards. In the case of vertical mounting,the upper plug must be hammered home completely. In verydusty environments both plugs should be hammered home.Terminal boxSizes 63 to 180The terminal box is made of aluminum alloy and is located ontop of the stator. The lower part of the box is integrated withthe stator. It is provided with two knockout openings on eachside. Sizes 132 SM and 160-180 also have a third smalleropening. Cable glands are not included.Sizes 200 to 280The terminal box and cover are made of deep drawn steeland mounted on top of the stator. The box is bolted to thestator and is not rotatable. The size of the box is the same forall motors.In the basic design the terminal box is provided with twoFL 13 flange openings, one on each side. The opening onthe right side, seen from the D-end, is supplied with a flangewith two holes for M40 cable glands. On delivery the holes14 LV Industrial performance motors EN 02-2010 ABB LV Motorsare sealed by means of plastic plugs. Cable glands are notsupplied. The opening on the other side is provided with acover flange.The motors can also be provided with an extra large terminalbox, standard for voltage code S and frame size 280. Seevariant code 019 under the heading “Terminal box”. This willincrease the dimension HD by 32 mm. The box is suppliedwith two FL 21 openings. The right opening is provided witha flange with two holes for M63 cable glands. The holesare sealed by means of plastic plugs. Cable glands are notsupplied. The opening on the other side is provided with acover flange. The box can also be provided with an FL 13opening towards the N-end.When new motors are manufactured the terminal box can bemounted on the left or the right side. See variant codes 021and 180 under the heading “Terminal box”.

Terminal board for motor sizes 90 to 112Terminal board for motor size 132Terminal board for motor sizes 160 to 180M000500M000018M000501Terminal board for motor sizes 71 to 80M000017M000521M000016Terminal board for motor size 63Terminal board for motor sizes 200 to 280ConnectionsThe terminal block isprovided with six terminalsfor connecting Cu-cable.The terminals are markedin accordance withIEC 60034-8.Connection openingsMotorsizeOpeningMetriccable entryMethod ofconnectionTerminalbolt sizeMaximum connectableCu-cable area, mm 263Knock-out opening1 x M16 x 1.51 x Pg 11Cable lugM42.571-80Knock-out opening2 x ( 2 x M20 )Cable lugM4490-112Knock-out opening2 x (M25 M20)Screw terminalM46101321)Knock-out opening2 x (M25 M20)Cable lugM51322)Knock-out opening2 x (M40 x M32 M12)Cable lugM635160-180Knock-out opening2 x (2 x M40 M16)Cable lugM635200-2502 x FL 131 x (2 x M40 M16)Cable lugM10702802 x FL 211 x (2 x M63 M16)Cable lugM10701)2)all types exceptSM2)Dimensions for terminal boxCode 019 Larger than standard terminal boxCode 467 Lower than standard terminal box withoutscrew terminals and extended rubberconnection cable 2 m.MotorsizeDimensionsADHBHDM3AA200 ML.332.5332.5603240M3AA225 SM.353353578260.5MotorsizeHBHDM3AA250 SM.376376626283.5160211.5371.5180226.5406.5HECode 021 Terminal box on left-hand side seen from D endCode 180 Terminal box on right-hand side seen from D endMotorsizeDimensionsM3AAM3AAM3AAADHBHDHE200 ML.332332532239225 SM.354354579260.5250 SM.377377627284DimensionsAD200 ML.248248448225 SM.269269494250 SM.292292542280292292572ABB LV Motors LV Industrial performance motors EN 02-2010 15

BearingsThe motors are provided with bearings according to thetables below.Note that in such cases the axial force must only operate inone direction.Greater axial forces can be tolerated if the motors areprovided with angular contact ball bearings.Motor versions with roller bearings tolerate greater radialforces.Basic version with deep groove ball bearingsAlternative designs:Version with roller bearingsIt is recommended to use roller bearings in belt drives formotor sizes 160 to 280.Basic design motorsMotorsize63Foot- and flange-mounted -2Z/C36205-2Z/C390NU 205–See variant code 037 under the heading “Bearings andlubrication”.1321)6208-2Z/C36206-2Z/C3100NU 306–1322)6308-2Z/C36206-2Z/C3112NU 306–1606309-2Z/C36209-2Z/C31321)NU 208–1806310-2Z/C36209-2Z/C31322)NU 308–2006312-2Z/C36210-2Z/C3160NU 309 ECP–2256313-2Z/C36212-2Z/C3180NU 310 ECP–2506315-2Z/C36213-2Z/C3200NU 312 ECP–2802-pole6315/C36213/C3225NU 313 ECP–2804-8 pole6316/C36213/C3250NU 315 ECP–1)2)all types exceptSM2)2802-poleNU 315 ECP–2804-8 poleNU 316 ECP–1)2)all types exceptSM2)Version with angular contact ball bearingsSee variant codes 058 and 059 under the heading “Bearingsand lubrication”.MotorsizeD-end058N-end059907205 B7204 B1007306 B7205 B1127306 B7205 B1321)7208 B7206 B1322)7308 B7206 B1607309 BEP7209 BEP1807310 BEP7209 BEP2007312 BEP7210 BEP2257313 BEP7212 BEP2507315 BEP7213 BEP2802-pole7315 BEP7213 BEP2804-8 pole7316 BEP7213 BEP1)2)16 LV Industrial performance motors EN 02-2010 ABB LV Motorsall types exceptSM2)

Transport lockingMotors provided with roller bearings or angular contact ballbearings are fitted with a transport lock to prevent damage tothe bearings, due to vibration, during transport.Axially-locked bearingsThe table below shows which of the motor’s bearings areaxially locked in the bearing seat. In motor sizes 63 to 80 thelocking is done by an internal retaining ring, in motor sizes 90to 280 by an inner bearing cover.See also variant code 042 under the heading “Bearings e-mounted motors63On request at D-endOn request at D-end71-132D-end160-280D-end1)1)Large flangeD-end1)D-endSmall flangeOn request at D-endD-end1)–A spring-washer at the N-end presses the rotor toward the D-end.LubricationThe motors are delivered with bearing grease for use atnormal temperatures in dry or humid environments.The motors are lubricated for ambient temperatures 40 C andin some cases even above 40 C, see table 1 next page.Motor sizes 63 to 250 are provided with shielded bearings.As an option, motor sizes 90 to 250 are provided with greasenipples for regreasing, see variant code 041 under theheading ”Bearings and lubrications”.Motor size 280 is provided with grease nipples for re-greasingas standard.The lubrication interval L1, suitable for relubricat

International motor efficiency standards IEC/EN 60034-2-1:2007 IEC/EN 60034-2-1, which came into force in September 2007, introduces new rules concerning the testing methods to be used for determining losses and efficiency. It offers two ways of determining efficiency; the direct and indirect methods. The standard specifies the following