Motorized System on Lifting

  • View

  • Download

Embed Size (px)



Text of Motorized System on Lifting

  • Motors | Energy | Automation | Coatings

    Three-phase induction motor Wound rotor with motorized brush lifting system


    Wound rotor three-phase induction motor2

    Wound rotor three-phase induction motor with motorized brush lifting system

    These motors are recommended in cases in which the load has a high resistant torque or high inertia at starting. The external resistances are used only to start the motor providing high torque and strongly reducing the inrush current.

    The brushes are in contact with the collector rings only at starting which avoids unnecessary wearing of the brushes and collector rings during rated operation allowing a longer time of use of the set.

    The wound rotor three-phase induction motors with motorized brush lifting system are manufactured with an electromechanic system which allows short circuiting collector rings and lifting brushes immediately after starting the motor.

    Examples of applicationsg Ball mills;g Fans;g Exhaust fans;g Crushers;g Pumps in general;g Others

    Application: Ball mills6500 kW, 11,000 V, 6 poles, frame 900



    Motorized brush lifting implies important advantages in the performance of the motor throughout the years:g Avoids constant and premature wearing of the brushes and collector rings;g Reduces the stops for maintenance and replacement of brushes;g Avoids the accumulation of dust on the brushes inside the brush compartment, keeping the insulation level of the rotor high;g Increases the useful life of the brushes, collector rings and, consequently, that of the motor.

    Application: Water pump2000 kW, 11,000 V, 4 poles, frame 560

    Application: Ball mills4600 kW, 11,000 V, 6 poles, frame 800

    After the starting procedure, the motors operate in rated conditions. The motors are highly reliable because they are designed with state-of-the-art technology and manufactured with international quality standard materials.


    Wound rotor three-phase induction motor 3

    Technicalg Powers: 160 to 27,000 kWg Voltages: 220 to 13,800 Vg Polarities: 4 to 14 polesg Insulation class: Fg Protection degree: Open (IP23) or closed (IP54 to IP65W)g Frames: 280 to 1600 (IEC)g Mounting: Horizontal or vertical

    Mountingg Frame: Cast up to frame 450 and welded steel plates from frame 500 to 1600.g Stator: In high or low voltage, insulated with Micatherm VPI WEG insulation system.g Rotor: Wound and with collector rings.g Collector rings: Made of stainless steel providing better performance and longer useful life.g Brush holder: With motorized brush lifting system.g Brushes: Developed to specifically meet operation conditions at starting of motors.g Motorized brush lifting system: Has an electromechanic actuator which provides the control to lift the brushes as well as short circuit the collector rings. Has control and signaling limit switches. Needs external control through contactor switches or PLC.



    Wound rotor motors make the increase of its rotor resistance possible through the use of a variable external resistance (rheostat) connected to the rotor circuit which increases the starting torque with a relatively low current.The motor starts with the brushes lowered and the collector rings not short circuited. This must be ensured by interlocking the signaling limit switches on the moving parts.As the motor gains speed, the rheostat must decrease its resistance progressively until it reaches the lowest possible value and then it must be short circuited.When the motor reaches the rated speed, the electromechanical actuator must be driven to short circuit the collector rings and lift the brushes and then the motor will operate at nominal duty.The system is designed to guarantee that the brushes will not be lifted unless the rotor is short circuited.The electromechanic actuator has control limit switches which are set to actuate in an accurate way both in the lifting and lowering procedure of the brushes.

    Manual operationShould it not be possible to drive the motorized system, the set of brushes can be driven manually using the flywheel on the superior part of the electromechanic actuator.

  • WEG Worldwide Operations

    ARGENTINAWEG EQUIPAMIENTOS ELECTRICOS S.A.(Headquarters San Francisco-Cordoba)Sgo. Pampiglione 4849Parque Industrial San Francisco2400 - San FranciscoPhone(s): +54 (3564) 421484Fax: +54 (3564)

    AUSTRALIAWEG AUSTRALIA PTY. LTD.3 Dalmore DriveCarribean Park Industrial EstateScoresby VIC 3179 - MelbournePhone(s): 61 (3) 9765 4600Fax: 61 (3) 9753

    BELGIUM WEG BENELUX S.A.Rue de lIndustrie 30 D, 1400 NivellesPhone(s): + 32 (67) 88-8420Fax: + 32 (67) 84-1748

    CHILEWEG CHILE S.A.Los Canteros 8600 La Reina - SantiagoPhone(s): (56-2) 784 8900Fax: (56-2) 784

    CHINAWEG (NANTONG) ELECTRIC MOTOR MANUFACTURING CO., LTD.No. 128# - Xinkai South Road,Nantong Economic & Technical Development Zone, Nantong, Jiangsu Province. Phone(s): (86) 0513-85989333Fax: (86)

    COLOMBIAWEG COLOMBIA LTDACalle 46A N82 - 54Portera II - Bodega 7 - San Cayetano II - BogotPhone(s): (57 1) 416 0166Fax: (57 1) 416

    FRANCEWEG FRANCE SASZI de Chenes Le Loup13 Rue du Morellon BP 73838297 Saint Quentin FallavierPhone(s): +33 (0) 4 74 99 11 35Fax: +33 (0) 4 74 99 11

    GERMANYWEG GERMANY GmbHIndustriegebiet Turnich 3Geigerstrae 750169 Kerpen-TurnichPhone(s): +49 (0)2237/9291-0Fax: +49 (0)2237/

    INDIAWEG Electric (India) Pvt. Ltd.#38, Ground Floor, 1st Main Road, Lower Palace Orchards,Bangalore 560 003Phone(s): +91-80-4128 2007 +91-80-4128 2006 Fax: +91-80-2336 7624

    ITALYWEG ITALIA S.R.L.V.le Brianza 20 - 20092 - Cinisello Balsamo - MilanoPhone(s): (39) 02 6129-3535Fax: (39) 02

    JAPANWEG ELECTRIC MOTORSJAPAN CO., LTD.Yokohama Sky Building 20F, 2-19-12 Takashima, Nishi-ku, Yokohama City,Kanagawa, Japan 220-001Phone: (81) 45 440

    MEXICOWEG MEXICO, S.A. DE C.V.Carretera Jorobas-Tula Km. 3.5, Manzana 5, Lote 1 Fraccionamiento Parque Industrial - Huehuetoca, Estado de Mxico - C.P. 54680Phone(s): + 52 (55) 5321 4275Fax: + 52 (55) 5321

    NETHERLANDSWEG NETHERLANDS Sales Office of WEG Benelux S.A.Hanzepoort 23C 7575 DB OldenzaalPhone(s): +31 (0) 541-571080Fax: +31 (0)

    PORTUGALWEG EURO - INDSTRIA ELCTRICA, S.A.Rua Eng. Frederico UlrichApartado 6074 4476-908 - MaiaPhone(s): +351 229 477 705Fax: +351 229 477

    RUSSIAWEG RUSSIA Pochainskaya Str. 17 Nizhny Novgorod 603001 - Russia Phone(s): +7-831-2780425 Fax:

    SPAINWEG IBERIA S.L. Avenida de la Industria,2528823 Coslada - MadridPhone(s) : (34) 916 553 008Fax : (34) 916 553

    SINGAPOREWEG SINGAPORE PTE LTD159, Kampong Ampat, #06-02A KA PLACE. Singapore 368328.Phone(s): +65 6858 9081Fax: +65 6858

    SWEDENWEG SCANDINAVIA ABBox 10196Verkstadgatan 9434 22 KungsbackaPhone(s): (46) 300 73400Fax: (46) 300

    UKWEG ELECTRIC MOTORS (U.K.) LTD.28/29 Walkers RoadManorside Industrial EstateNorth Moons Moat - RedditchWorcestershire B98 9HEPhone(s): 44 (0)1527 596-748Fax: 44 (0)1527

    UNITED ARAB EMIRATESWEG MIDDLE EAST FZEJAFZA JEBEL ALI FREE ZONETower 18, 19th Floor, Office LB 18 1905P.O. Box 262508 - DubaiPhone: +971 (4) 8130800 Fax: +971 (4)

    USAWEG ELECTRIC CORP. 1327 Northbrook Parkway, Suite 490Suwanee 30024Phone(s): 1-770-338-5656Fax:

    VENEZUELAWEG INDUSTRIAS VENEZUELA C.A.Avenida 138-AEdificio Torre Banco Occidental de Descuento, Piso 6 Oficina 6-12Urbanizacion San Jose de TarbesZona Postal 2001Valencia, Edo. CaraboboPhone(s): (58) 241 8210582 (58) 241 8210799 (58) 241 8211457Fax: (58) 241




    0 -



    es s


    n ar

    e su


    ct to




    out p




    WEG Equipamentos Eltricos S.A.International Division Av. Prefeito Waldemar Grubba, 3000 89256-900 - Jaragu do Sul - SC - Brazil Phone: 55 (47) 3276-4002 Fax: 55 (47) 3276-4060


View more >