60 Hz Wound Rotor (slip ring-rotor) Motors. 8 Results. Electrical & Power / AC Motors / 60 Hz Wound Rotor (slip ring-rotor) Motors. ... A M King Industries has 20 more listings in Ball, Pebble, Sag Mills, Chemical Processing. See All 25 Listings » …

Mining Capabilities. Complete product line of motors and drives. Suitable for SAG and ball mills, conveyors, crushers, grinders, and more. Westinghouse legacy driven by TECO Experience. Dedicated customer service and knowledgeable technical support team. Service and repair capabilities with a full line of renewal parts.

Cement Mills 800 Kw Slip Ring Motor Starting. Jun 25, 2011 kindly suggest for a suitable starter to start a ball mill with 2600 kw, 1000 rpm, 11 kv slipring induction motor. has any latest technology invented to start the motor other than LRS FCMA. can the VVFD solution fullfil the initial torque compansation. the.415V 245kw Jr Series Wound Rotor Slip Ring Motor Ball Mill .

Wound-Rotor Motors The wound-rotor motors are normally applied in cases where loads have high inertia or with highly resistive torque at startup. They are also used when there are starting current limitations in the power system. They are used for driving loads such as: ball mills, cement mills, fans, exhaust fans, shredders and rolling mills ...

Ball Mill Motor Starting Curves Nagpur jaw crusher starting torque . ball mill motor starting curves nagpur Crushers Ball mill motor with a speed reducer after the start, the cause of vibration: 1. starting characteristic curve of jaw crusher Cone Crusher Speed Torque Curve,Stone Crusher, Mobile. via the inverter, you shift the breakdown torque curve toward …

ball mill motor starting curves nagpur. Grinding mill motor starting curves nagpur ratings the gulin product line, consisting of more than machines, sets the standard for our industry grinding mill china is the best torque speed curves ball mill vfd motor learn more itt grinder standard nel approved by flygt connect the stator

We operate ball mills with dual-coupled 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.

Wound rotor mot or solutions are use d mostly for th eir higher ... motor is starting the mill through a cl ... The subject of this paper is a synchronous drive of grinding ball mills 4 …

Grinding and processing. WEG offers the most reliable and efficient solutions for milling plants for ferrous and non-ferrous products with their experience of mill drive systems. In the heart of a processing plant, the ball and SAG mills must be driven by solutions that adapt to the characteristics of the minerals in line with the whole process.

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First works analyzing grinding mill drives [1], [2] focused on the torque requirements, motor options (wound rotor induction motors, synchronous motors), …

system, couple the motor to the mill. Another possibility is to use a motor that can develop sufficient torque such as the wound rotor induction motor with rotor resistor starter. There are some drawbacks to be considered while using such a fix speed direct on line alternative independently if a high – or low speed solution is selected.

Through this graph, it is clear that the wound rotor motor addresses current, torque, and speed control much better than other designs. By varying the resistance, these motors will need less initial inrush current to compensate, have a stronger starting torque, and can maximize their starting torque by also making it the pullout torque example curve R2 in …

Ours is 4160v and the stator induces the rotor to about 1500vac through a slip ring to the resistor bank. The motor starts with all resistors in parallel, each contactor "step" has a contact in an oil bath to each resistor bank, each step takes like 5 seconds until all the resistors have been removed and the rotor is shorted.

Two mills typically used are Ball Mills and SAG ally been large wound rotor induction motors which are commonly Starting curve for a 3 000 kW mill . Induction motor - Wikipedia An induction motor or asynchronous motor is an AC electric motor in which the electric current in the rotor needed to produce torque is obtained by electromagnetic ...

• Wound rotor/gearbox/twin pinion • Rotor drive (hypersynchronous) – multiple pinion. The LCI – twin pinion system has found acceptance overseas but has not been installed to date in Australia. The Fimiston 10.97 m (36 ft) SAG mill uses twin wound rotor/gearbox/ pinion drives with variable speed achieved through CCV systems.

In wound rotor motors, the rotor is "wound" with wire similar to the stator, with their terminal ends connected to 3 slip rings on the output shaft. These slip rings are attached to brushes and variable power resistor banks, where operators can change the speed of the motor by varying the resistance through the rotor coils.

The JR ball mill special winding slip ring motor is an improved new product motor that meets the relevant international technical conditions. JR ball mill motor adopts rotor string resistance full-voltage start-up, which has the advantages of small starting current, large starting torque, high efficiency, low noise, low vibration, good ventilation performance, reliable operation, …

BALL MILL DRIVE MOTOR CHOICES … 1200 rpm induction motor with a VFD controller as a soft-start … Figure 2 shows the graph of mill speed versus torque requirement: vfd on slip ring "wound rotor" motors – Variable Speed Drives …

Motors considered are the squirrel cage motor, wound rotor motor, and synchronous motor. One important advantage of the synchronous motor is the possible correcting of power factor within your operation, through its use. When using a synchronous motor we recommend having 200% starting torque, 120% to 130% pull-in torque, and 225% …

ABB motor designs are always optimized for the specific application, ensuring the correct starting method is used. The starting method is selected primarily on the basis of customer requirements, network capability and process demands. Fixed speed motors Fixed speed synchronous motors are typically used in applications like compressors, fans,

Also torque and speed curves are not available. The Lock Rotor current is 600% of Full load current ( 293 Amp) and Pull out torque is 225% of full load torque ( 117.83 kgm) ... this motor should be able to start a ball mill with out a fluid coupling. If we design for 80% start torque, that would mean a start current of 400% so I expect that you ...

Product Description Specifications YR YZR Wound rotor slip ring Lifting metallurgy crane GOST Low voltage ball mill asynchronous three phase ac induction electric motor slip ring ... Company: Shanghai Pinnxun Electric Motor Co., Ltd.

Without a starting resistor the rotor current would reach up to 7 x rated current which would negatively influence the supply grids. Further it is possible to generate a smoother starting curve which protects electrical as well as mechanical components of the application and the motor and assures a smooth startup of the system.

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Without a starting resistor, the starting rotor current would reach up to 7 x rated current which would neg-atively influence the supply grids. Further, it is possi-ble to generate a smoother starting curve which pro-tects electrical as well as mechanical components of the application and the motor and assures a smooth startup of the system.

Wound Rotor Motor: What is it? - Motion Control Tips

YR series large size 10kV wound rotor three-phase asynchronous motor is another series of products carefully built by our company on the basis of the successful development of medium-sized 6kV wound rotor three-phase asynchronous motor. This series of motors can be directly used in 10kV power grid.

Ball Mill Motor Starting Curves Morleyigacomau. Ball mill motor starting curves heavy industry is committed to producing the best mechanical crushing equipment capable of producing various types of crusher and mill and reached the leading level in the world we are a trustworthy ball mill manufacturer capable of producing all types of ball mill good quality and reasonable …

A wound rotor (rotating field) which has the same number of poles as the ... Figure 4: Synchronous motor V-curves . ... ball mills, metal rolling mills and process industries. Synchronous Motors Dr. Suad Ibrahim Shahl 9 . Methods of starting (1) by using a starting motor. This motor is directly coupled to the motor. ...