ball mill wound rotor moror starting

How can I softstart a WRIM correctly

Feb 04 2004 0183 32 From your message you are installing a wound rotor motor on a ball mill The wound rotor motor is usually used on this application because of it s superior starting characteristics The Wound Rotor motor is able to develop a very high starting torque from zero speed to full speed at a relatively low start current...

Wound Rotor

easily Wound rotor motors also can develop high starting torque at standstill - while maintaining low inrush Long motor life is ensured with the use of external resistor banks or liquid rheostats that dissipate heat build-up generated during motor start-up What makes the wound rotor motor a unique induction machine is its rotor Instead of a...

PDF Evaluation of synchronous motors on grinding mills

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 MW 150...

ball mill liquid rotor starter

CR4 - Thread Suitable Starter for Ball Mill Starting Through Pathfinder Tags slipring motor starter for ball mill but for the starting torque required for a ball mill a liquid starter is probably the best option their attention to liquid resistance starting of wound rotor motors Applications Suitable for use with heavy...

soft start vs vfd for ball mill

controlled soft starting and operation especially in dual pinion mills as well as the protection of the synchronous or wound rotor motors with the power of about 2 mw also the ball mills became continuously larger and reach today up vsd high speed vsd low...

AC WOUND ROTOR INDUCTION MOTOR STARTER

Jan 12 2010 0183 32 If we consider a wound rotor motor with the rotor shorted we may have a LRC of 1200 and a LRT of 60 The start current to develop 40 torque will be 979 which is worse than a standard cage motor started across the line...

China Jr Series Wound Rotor Slip Ring Motor Ball Mill

Yrq Motor Wound Rotor Motor Slip Ring Motors manufacturer / supplier in China offering Jr Series Wound Rotor Slip Ring Motor Ball Mill Motor 380kw Ykk Series Squirrel Cage High-Voltage Three-Phase Asynchronous Motor 66kv/11kv Yks Series Air-Water Cooling High-Voltage 3-Phase AC Motor...

cement mills 800 kw slip ring motor starting

Liquid Resistance Starter Pdf For Ball Mill Cement mills kw slip ring motor starting wound rotor induction motor with liquid rheostat suitable starter for ball mill starting through slipring motor kv kw a slip ring motor uses resistors in where a kw ball mill motor is the mill motor is started by use of a secondary liquid resistance starter reduction in resistance in the...

Three Phase Induction Motor Construction

A phase wound rotor of three phase induction motor is also called slip ring rotor and the motors employing this type of rotor are known as phase wound or slip ring induction motors Slip ring rotor consists of a laminated cylindrical core having semi-closed slots at the outer periphery and carries a 3-phase insulated winding The rotor is wound...

Yrkk Ball Mill Wound Rotor Hv 66kv Induction Motor

Yrkk Ball Mill Wound Rotor Hv 66kv Induction Motor Find Complete Details about Yrkk Ball Mill Wound Rotor Hv 66kv Induction Motor Yrkk Slip Ring High Voltage Motor Yrkk Ball Mill Wound Rotor Motor Quality Yrkk Ball Mill Wound Rotor Motor from AC Motor Supplier or Manufacturer-Shanghai Pinnxun Electric Motor Co Ltd...

Moment of Inertia of a Ball Mill

Oct 06 2010 0183 32 I have attached two gif files showing calculations for Mill power Mills above a certain size will have an inching motor to assist starting of main drive motor A liquid resistance stater will work well when using wound rotor induction motor...

Replacing slipring with induction motor Electrician Talk

Sep 24 2014 0183 32 Don t the wound rotor motors have brushes and then they drop out at a certain speed I guess they have slip rings and not commentators I have about 5 years induction motor repair and rewind experience We didn t do too many round rotor motors just induction motors like up to 200 - 300 HP...

Low Voltage Three Phase Indcution AC Electric Wound Rotor

YRQ 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 and convenient installation and maintenance JR11 15 380 V low voltage wound rotor slip ring motor...

Line Start Permanent Magnet Synchronous Motor 630kW 187

Mar 04 2016 0183 32 Flagship project Line Start Permanent Magnet Synchronous Motor 630kW 6kV 1875rpm/32 poles manufactured by DFME driving a single pinion ball mill in K...

415V 245kw Jr Series Wound Rotor Slip Ring Motor Ball Mill

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 convenient...

Mineral Processing Toshiba International Corporation

Application Ball Mill Equipment 1 x 44000kW 30 pole 6600 volt Synchronous Motor Location Kalgoorlie Western Australia Ernest Henry Mine Application 1 x 11000kW SAG Mill driven by Dual 5500kW motors 1 x 5500kW Ball Mill Equipment 3 x 5500kW 6 pole 11000 volt Wound Rotor Induction Motors Location Cloncurry Queensland...

Ball mill drive motor choices

First works analyzing grinding mill drives 1 2 focused on the torque requirements motor options wound rotor induction motors synchronous motors and drive arrangements center drive one...

China Wound Motor Wound Motor Manufacturers Suppliers

Amongst the wide range of products for sale choice Wound Motor is one of the hot items Design engineers or buyers might want to check out various Wound Motor factory manufacturers who offer lots of related choices such as electric motor ac motor and wound rotor motor You can also customize Wound Motor orders from our OEM/ODM manufacturers...

wound motor with liquid resistor starter for mill

wound motor with liquid resistor starter for mill Wound Rotor Wound rotor motors are an Long motor life is ensured with the use of external resistor banks or liquid Cement Mills Pumpsget varied speed How Wound ยป More detailed liquid starters for ball mills what is lrs in ball millGrinding Mill China A liquid resistance starter LRS 3...

Synchronous Motor Troubleshooting Mike Holt s Forum

Mar 09 2014 0183 32 Q Doesn t the rotor get shorted out maybe a small resistance and it starts as an induction wound rotor motor Just thinking out loud - If the starting SCR I can t read the number - but the one associated with D1 were to stick on that would short out the exciter which would take out short two SCRs one on each side of the bridge...

China Yr3 Rolling Mill Wound Roto Motor 75kw IP54

squirrel cage rotor motor starting torque power capacity is not sufficient to start the rotor cage motor starting frequently and starting time longer and linked into electrical axis synchronous transmission Such as metal cutting machine crusher ball mill rubber machine compressor Sugar mill Rolling mill...

Wound Rotor Motor Mill Drives

Wound Rotor Motor Mill Driv A wrim is a type of induction motor with unique construction in the cement and mining industry for starting and driving large grinding mills in fact until about 1985 a wound rotor induction motor was the motors on grinding mills slip power recovery drives have been applied in other industries such as in municipal chat online...

Wound Rotor Motor

The JR series motor is a protective winding type rotor three-phase asynchronous motor with cooling method IC01 and continuous working system S1 This series of motors can provide a large starting torque at a small starting current and can adjust the speed within a certain range...

Line Start Permanent Magnet Synchronous Motor 630kW 187

Flagship project Line Start Permanent Magnet Synchronous Motor 630kW 6kV 1875rpm/32 poles manufactured by DFME driving a single pinion ball mill in K...

Automatic Liquid Resistance Starter PENGFEI Group

It overcomes the traditional starters shortcomings of large starting current incapability of consecutive starts difficult start short service life and frequent maintenance It is widely used to start the wound-rotor motors of crusher shredder ball mill draught fan and water pump in petrochemical building materials mining metallurgy...

What is a Wound Rotor Motor and How Does it Work

Feb 16 2021 0183 32 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...

wound rotor motor mill drives

415V 245kw Jr Series Wound Rotor Slip Ring Motor Ball Mill Jr Motor Wound Rotor Motor Slip Ring Motors manufacturer / supplier in China offering 415V 245kw Jr Series Wound Rotor Slip Ring Motor Ball Mill Motor Ykk Series Squirrel Cage High-Voltage Three-Phase Asynchronous Motor 66kv/11kv Yks Series Air-Water Cooling High-Voltage 3-Phase AC Motor...

Wound Rotor Motor HV Slip Ring Motor

Slip Ring Motor YRKK series motors are slip-surrounding three-phase asynchronous motors which can increase the starting torque at a small starting current JR slip ring motor for ball mill JR ball mill motor adopts rotor string resistance full-voltage start-up which has the advantages of small starting current large starting torque high...

What are wound field motors and where are they applied

Aug 02 2018 0183 32 Brushed DC motors are generally available in two types depending on the construction of the stator permanent magnet or wound field Both motor types use current and windings to produce a magnetic field in the rotor but they differ in how the stator magnetic field is produced via permanent magnets inside the stator or with electromagnetic windings...

ball mill liquid rotor starter

MORE DETAILS Ball Mill Liquid Rotor Starter ball mills the starting torque restrictions of some of the newer mill drive configurations and the softness of some utility drive 1 a 5000 hp 1200 rpm wound rotor motor with liquid rheostat and power factor drive 3 a 5000 hp 514 rpm synchronous motor with softstart and an air clutch and 55 at motor starter Ball Mill Liquid Rotor Starter In...

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