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201412EXPERIENCE WITH SYNCHRONOUS AND SLIP RING INDUCTION MOTORS DRIVING CEMENT MILLS Table of contents Section Page 1 Abstract 3 2 Introduction 3 3 Ball mill and motor 3 31 Ball mill load characteristics 32 Motor torque defined 33 Differentiating characteristics 34 Synchronous motor 35 Slip ring induction motor ... Pebble Mills, SAG Mills ...

Dec 19, 2014· Advantages of SER drives for SAG mills. ... For large mills requiring variable speed, the wound rotor motor and SER drive are economical for a total rating of approximately 2MW to 16MW. ... the power obtained from the motor is higher than the motor nameplate rating. Brush/slip ring maintenance is one issue. However, when the brushes are ...

Sep 18, 2011· We operate ball mills with dualcoupled 3500hp 4160v wound rotor induction motors. We have recently experienced frequent arcing of the slip rings which seems to start on the center ring. The arcing damages the ring badly which requires us to shutdown the mill to sand it smooth again.

Slipring motor manufacturer MENZEL provides shortterm availability and adaptation, applicationspecific requirements and worldwide logistics. We can react very quickly due to a comprehensive stock of slip ring motors in a power range up to 15000 kW.

ringgeared mills. In fact the rotor of the ring motor is the mill itself and ... Presently SAG mills are mainly driven with variable speed drives, ... sliprings and interconnections) • Possibility of carbon dust buildup in the rotor area • Brush configuration (number and suitable quality) as well as brush ...

TECOWestinghouse Motor Company Wound Rotor Induction Motors combine outstanding performance with an advanced longlife design. Available in ratings from 5 HP up to 15,000 HP, these rugged workhorses are ideal for many demanding applications including: Ball and Sag Mills Cranes Hoists Pumps Fans and Blowers Chippers Conveyors

Search for used slip ring motors. ... SlipRing Induction Motors. Manufacturer: TECO; Location: 3 Units TECO 5000 kW (6702 HP) SlipRing Induction Motors. Oroville, CA, USA. Click to Request Price. Top Seller. 26 x 14 ft ( x m) SAG Mill 6,300 HP (4700 kW) Motor GM573. High aspect ratio 26 x 14 ft ( x m) SAG Mill 6,300 HP (4700 ...

In addition to the operating advantages of the wound rotor induction motor, WEG have developed a new motorized brush lifting devise which is responsible for the short circuit of the rotor when the motor reaches its rated speed, taking advantage of high starting torques and low starting current together with minimum brush and slip ring wear ...

EXPERIENCE WITH SYNCHRONOUS AND SLIP RING INDUCTION MOTORS DRIVING CEMENT MILLS Table of contents Section Page 1 Abstract 3 2 Introduction 3 3. Ball mill and motor 3 Ball mill load characteristics Motor torque defined Differentiating characteristics Synchronous motor

Differences between drives power draw of two drives sag mills. In a double drive/pinion SAG, we face different power draw between each drives. ... Grinding Classification Circuits. ... I like above suggestions to get the motor phases balanced and check that both motor slip rings are .

Nov 20, 2015· This type of motor is identical to a squirrelcage induction motor except for the rotor, which consists of a symmetrical, threephase winding. The three terminals are connected to three slip rings. Three external variable resistors are connected to the three slip rings via carbon brushes. Motor and resistor connections are shown

ball mill drive motor choices Artec Machine Systems. ball mills, the starting torque restrictions of some of the newer mill drive . solution, it was reasoned in the early 70''s that less was better, and the gearless drive was . the wrap around principle or the external principle, where the motor rotor is of this maintenance, especially the maintenance of the slip rings and brushes.

Feb 23, 2018· A slip ring induction motor ( wound rotor induction motor) has the main benefit that it is easier to start than a squirrel cage motor. By putting resistance in series with the rotor windings, the starting current can be kept low while mainta...

SAG Mills, Mine Hoists, Crushers, Synchronous Motors, DC Motors, Flotation,Mixers, Pumps, Diesel Generators, ... *7,000hp Motor, GE AC Wound (Slip Ring). Get Price. Design and dynamic behavior of large Ring Motors for grinding mills. Figure 1: Ring Motor of the 38'''' SAGMill of Rio Paracatú Mineraçao;. Brazil. 3Design Verification.

Slip Ring Induction Motors For applications that demand high starting torques, low starting current, or both, Baldor is proud to offer ABB''s broad line of slip ring induction motors. Our design experience and application expertise have made us a leading manufacturer of high voltage slipring inductionmotors.

Taidacent 6 Wires12 Wires 2A 5A 10A 15A 20A 30A Slip Ring Collector Ring Rotary ...

UNUSED MENZEL 6000 kW (8043 HP), 3Phase Slip Ring Motor, 890 RPM. Manufacturer: MENZEL. ... (6702 HP) SlipRing Induction Motors . Manufacturer: TECO. Inventory ID: 17CCM01. View Details. LOT of 2 each 6000 HP GENERAL ELECTRIC, Quadramatic Dual Drive, 180 RPM Brush Type Horizontal Synchronous Motors ... previously used as Sag Mill Drive ...

Improvements in power electronics technology and controls have resulted in variable ... respect to flexibility and adjustability of the process, and that it does not need any gear box .... ball mills are slip ring motors (also called wound rotor induction motor) ..... Inching is used to position the mill for maintenance work such as.

Product note: Slipring modular motors from ABB, Availability for heavy load inertia applications (English pdf Leaflet) Technical note: Foundation design for high voltage induction motors (English pdf Leaflet) Product note: ABB induction motors for the mining industry (English pdf Leaflet)

mills must have flexible drive systems in order to minimize downtimes. WEG can offer the right drive system for the toughest requirements for the main mill manufacturers. J Slip ring/Wound Rotor Induction Motor (WRIM) + liquid rheostat starter (supplied by others) and associated electrical

Find here Slip Ring Motor, Slip Ring AC Motor manufacturers, suppliers exporters in India. Get contact details address of companies manufacturing and supplying Slip Ring Motor, Slip Ring AC Motor, Slip Ring Alternating Current Motor across India.

Apr 04, 2019· Slip ring Induction motor Application >> Slip ring induction motor provides high starting torque. So, this motor is used in applications like Lifts, pumps, mills where we require high starting, induction motor provides low starting torque as compared to series motors but this disadvantages of the induction motor can be overcome by slip ring induction motor.

Rotary Systems Standard Custom Rotary Unions and Slip Rings for all industries and applications. Get details on our standard and custom designs.

3 phase slip ring induction motors from MENZEL are available with various cooling and protection systems. The slip ring motors in our MEBSGR series that are described in the following text are in the IC 411 cooling class, known as "surfacecooled" or "ribbedcooled".
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