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Cooling Tower Direct Drive System

Motors | Automation I Energy I Transmission & Distribution I Coatings

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Cooling Tower Direct Drive Motor2

Cooling Tower Direct Drive System

In order to provide cooling towers with greater reliability and effi ciency, WEG developed the Cooling Tower Direct Drive System to replace conventional cooling tower ventilation systems formed by motor, driving shaft and gearbox reducing mechanical losses, which enables higher performances.

The rotor of the Cooling Tower Direct Drive features permanent magnets which ensure high performance levels withhigh torque, even at low speeds. This new motor, since it does not require a gearbox, eliminates tower water contaminationby the gearbox oil and presents great advantages to the system, such as lower consumption with the air fl ow control, fewershutdowns for maintenance and lower noise.

Benefi ts

Greater power effi ciency Greater coupling effi ciency Greater safety and reliability Less noise Less maintenance Reduction of mechanical losses by eliminating gearbox and driving shaft

The conventional tower ventilation system requires more mechanical repairs due to:

Gearbox faults Oil contamination and leaks Mechanical misalignment Excessive vibrations

Conventional System New System

www.weg.net

Cooling Tower Direct Drive System 3

Technical Data

Cooling Tower Direct Drive System 3

FrameOutput cv

(kW)Speed(RPM)

Rated Torque (Nm)

Rated Current

(A)

Effi ciency (%)

Power Factor (cos )

280S/M 25(18.5) 320 552 36,8 93,4 0,97

280S/M 40(30) 320 900 58,0 94,4 0,97

315S/M 50(37) 350 1010 82,4 94,5 0,95

315S/M 75(55) 350 1501 104,8 94,8 0,97

355M/L 50(37) 200 1768 83,8 94,0 0,90

355M/L 60(45) 200 2150 101,5 94,0 0,90

355M/L 75(55) 200 2628 108,7 94,0 0,91

355M/L 100(75) 200 3583 142,6 94,3 0,91

355M/L 100(75) 160 4479 151,4 92,5 0,89

355A/B 125(90) 160 5375 176,0 92,8 0,87

400 150(110) 160 6569 234,6 93,0 0,85

450 175(125) 135 8847 258,2 93,4 0,79

450 200(150) 135 10616 325,4 93,6 0,79

Rated current 380 V

FrameShaft end Frame Terminal Box Flange

D d1 E ES F G GD L LA AD S1 M N P S T

280S/M 75 M20 140 125 20 67,5 12 944,5 18 4422xRWG 2

500 450 550 19 5

315S/M

85 M30 170 160 22 76 14

1093 16 525 600 550 660 24

6

355M/L 129722 609

2xRWG 3740 680 800 25

355A/B 1492 2xRWG 4

400A/B 110M24

210 170 28 100 16 1869 35775 2xRWG 3

940 880 100028

450A/B 130 250 200 32 119 18 2330 34 1080 1000 1150

Dimensions in millimeters (mm)

WEG Worldwide Operations

WEG Group - Motors Business Unit Jaragu do Sul - SC - Brazil Phone: +55 47 3276 4000 motores@weg.net www.weg.net

For those countries where there is not a WEG own operation, find our local distributor at www.weg.net.

ARGENTINAWEG EQUIPAMIENTOS ELECTRICOS San Francisco - CordobaPhone: +54 3564 421 484info-ar@weg.netwww.weg.net/ar

WEG PINTURAS - PulverluxBuenos AiresPhone: +54 11 4299 8000tintas@weg.net

AUSTRALIAWEG AUSTRALIAVictoria Phone: +61 3 9765 4600info-au@weg.netwww.weg.net/au

AUSTRIAWATT DRIVE - WEG GroupMarkt Piesting - ViennaPhone: +43 2633 404 0watt@wattdrive.comwww.wattdrive.com

BELGIUMWEG BENELUXNivelles - BelgiumPhone: +32 67 88 84 20info-be@weg.netwww.weg.net/be

BRAZILWEG EQUIPAMENTOS ELTRICOSJaragu do Sul - Santa CatarinaPhone: +55 47 3276-4002info-br@weg.netwww.weg.net/br

CHILEWEG CHILESantiagoPhone: +56 2 784 8900info-cl@weg.netwww.weg.net/cl

CHINAWEG NANTONGNantong - Jiangsu Phone: +86 0513 8598 9333info-cn@weg.netwww.weg.net/cn

COLOMBIAWEG COLOMBIABogotPhone: +57 1 416 0166info-co@weg.netwww.weg.net/co

FRANCEWEG FRANCESaint Quentin Fallavier - LyonPhone: +33 4 74 99 11 35info-fr@weg.netwww.weg.net/fr

GERMANYWEG GERMANY Kerpen - North Rhine Westphalia Phone: +49 2237 9291 0info-de@weg.netwww.weg.net/de

GHANAZEST ELECTRIC GHANA WEG GroupAccraPhone: +233 30 27 664 90info@zestghana.com.ghwww.zestghana.com.gh

INDIAWEG ELECTRIC INDIABangalore - KarnatakaPhone: +91 80 4128 2007 info-in@weg.netwww.weg.net/in

WEG INDUSTRIES INDIAHosur - Tamil NaduPhone: +91 4344 301 501info-in@weg.netwww.weg.net/in

ITALYWEG ITALIACinisello Balsamo - MilanoPhone: +39 02 6129 3535info-it@weg.netwww.weg.net/it

JAPANWEG ELECTRIC MOTORSJAPANYokohama City - KanagawaPhone: +81 45 550 3030info-jp@weg.netwww.weg.net/jp

MALAYSIAWATT EURO-DRIVE - WEG GroupShah Alam, SelangorPhone: 603 78591626info@wattdrive.com.mywww.wattdrive.com

MEXICOWEG MEXICOHuehuetoca Phone: +52 55 5321 4231info-mx@weg.netwww.weg.net/mx

VOLTRAN - WEG GroupTizayuca - HidalgoPhone: +52 77 5350 9354www.voltran.com.mx

NETHERLANDSWEG NETHERLANDS Oldenzaal - OverijsselPhone: +31 541 571 080info-nl@weg.netwww.weg.net/nl

PERUWEG PERULimaPhone: +51 1 472 3204info-pe@weg.netwww.weg.net/pe

PORTUGALWEG EUROMaia - PortoPhone: +351 22 9477705info-pt@weg.netwww.weg.net/pt

RUSSIA and CISWEG ELECTRIC CIS Saint Petersburg Phone: +7 812 363 2172 info-ru@weg.net www.weg.net/ru

SOUTH AFRICAZEST ELECTRIC MOTORSWEG Group JohannesburgPhone: +27 11 723 6000info@zest.co.zawww.zest.co.za

SPAINWEG IBERIAMadridPhone: +34 91 655 30 08info-es@weg.netwww.weg.net/es

SINGAPOREWEG SINGAPORE SingaporePhone: +65 68589081info-sg@weg.netwww.weg.net/sg

SCANDINAVIAWEG SCANDINAVIAKungsbacka - SwedenPhone: +46 300 73 400info-se@weg.netwww.weg.net/se

UKWEG ELECTRIC MOTORS U.K.Redditch - WorcestershirePhone: +44 1527 513 800info-uk@weg.netwww.weg.net/uk

UNITED ARAB EMIRATESWEG MIDDLE EAST DubaiPhone: +971 4 813 0800info-ae@weg.netwww.weg.net/ae

USAWEG ELECTRIC Duluth - GeorgiaPhone: +1 678 249 2000info-us@weg.net www.weg.net/us

ELECTRIC MACHINERYWEG GroupMinneapolis - MinnesotaPhone: +1 612 378 8000www.electricmachinery.com

VENEZUELAWEG INDUSTRIAS VENEZUELAValencia - CaraboboPhone: +58 241 821 0582info-ve@weg.netwww.weg.net/ve

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