wound rotor motor and ball mill starting

Wound Rotor Motor, HV Slip Ring 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 ,

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New Mining Motor: a special product for tough application ,

New Mining Motor: a special product for tough application ,

This motor incorporates special features and a new system of brushes and slip rings (wound rotor motors) making them suitable to operate under severe and harsh area applications 06/03/2019 Responding to market demands with reliable and tough machinery for Mining and Cement segments, WEG just developed a new line of motors specifically designed ,

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Synchronous Motor : Working Principle, Types, and Applications

Synchronous Motor : Working Principle, Types, and Applications

Synchronous Motor The synchronous motor doesn’t rely on induction current for working In these motors, unlike induction motor, multiphase AC electromagnets are present on the stator, which produces a rotating magnetic- fieldHere rotor is of a permanent magnet which gets synced with the rotating magnetic- field and rotates in synchronous to the frequency of current applied to it

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Three-Phase Induction Motors

Three-Phase Induction Motors

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 ,

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

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

Feb 07, 2008· vfd on slip ring "wound rotor" motors - posted in Variable Speed Drives: I am involved in converting a ball mill , which requires a large amount of starting torque, from a slip ring motor driven application to a vfd driven appl We have sent the motor to our motor guy to refurbish and interconnect the rotor windingsIs there any advice or similar applications out there that could be helpful ,

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Three Phase Induction Motor Construction - your electrical ,

Three Phase Induction Motor Construction - your electrical ,

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 ,

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Wound Rotor - TECO-Westinghouse Motor Company, a world ,

Wound Rotor - TECO-Westinghouse Motor Company, a world ,

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 ,

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Milling - Energy intensive and high maintenance

Milling - Energy intensive and high maintenance

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

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Motor Schematics (Large Motors above 4MW)? - Electric ,

Motor Schematics (Large Motors above 4MW)? - Electric ,

Each mill was driven by a pair of 3000 HP wound rotor motors with liquid rheostat starting Each mill was supplied by two cubicles of a 13,000 Volt lineup, but only one breaker Both motors were fed from the one breaker but each motor had individual protection Either motor ,

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Three-Phase Induction Motors

Three-Phase Induction Motors

The wound-rotor motors are normally used in loads with high inertia or high resistive torque at startup They are also used when starting current limitations are present in the power supply system They are used to drive loads such as: ball mills, cement mills, fans, exhaust fans, shredders and rolling mills employed in the cement, mining and ,

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liquid rotor starter for ball mill - proves-projektde

liquid rotor starter for ball mill - proves-projektde

liquid rotor s tarter for ball mill accenture insights be Sag mill, ball mill, locked charge, drop charge, frozen charge, liquid the electrical currents between the motor rotor and the liquid resistance starter liquid resistance starters nhp machines such as ball and sag mills, crushers liquid resistance starters for use with low and the m is a two stage liquid resistance starter, each stage

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Jr138-6-320kw Jr Series Wound Rotor Slip Ring Motor Ball ,

Jr138-6-320kw Jr Series Wound Rotor Slip Ring Motor Ball ,

Jr Motor, Wound Rotor Motor, Slip Ring Motor manufacturer / supplier in China, offering Jr138-6-320kw 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 ,

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Yrkk Ball Mill Wound Rotor Hv 66kv Induction Motor - Buy ,

Yrkk Ball Mill Wound Rotor Hv 66kv Induction Motor - Buy ,

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

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

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 ,

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Three-Phase Induction Motors - ACI Controls

Three-Phase Induction Motors - ACI Controls

The wound-rotor motors are normally used in loads with high inertia or high resistive torque at startup They are also used when starting current limitations are present in the power supply system They are used to drive loads such as: ball mills, cement mills, fans, exhaust fans, shredders and rolling mills employed in the cement, mining and ,

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Wound Rotor Motor Mill Drives - Fact Jeugd Noord

Wound Rotor Motor Mill Drives - Fact Jeugd Noord

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

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Current on rotor connected to rheostat | Mike Holt's Forum

Current on rotor connected to rheostat | Mike Holt's Forum

Dec 22, 2009· I have working with a 416kV wound rotor motor with the rotor connected through slip rings to a rheostat during starting Obviously after the motor has started the leads coming from the rotor are shorted together in the rheostat My question is after the rotor leads are shorted together is there still voltage and current on these leads

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What is a Wound Rotor Motor and How Does it Work?

What is a Wound Rotor Motor and How Does it Work?

2 天前· 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

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Replacing a wound rotor motor with a snychronous motor for ,

Replacing a wound rotor motor with a snychronous motor for ,

Dec 16, 2010· The reason Synchronous motors are able to start ball mills and provide PF correction; In this example the motor is about 200% oversized for the machanical load so even though the starting torque is low for a synchronous motor, there is twice as much as there would be if the motor was sized for the mechanical load alone

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Ball mill drive motor choices - ResearchGate

Ball mill drive motor choices - ResearchGate

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 ,

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China Wound Rotor Induction Motor, Wound Rotor Induction ,

China Wound Rotor Induction Motor, Wound Rotor Induction ,

China Wound Rotor Induction Motor manufacturers - Select 2020 high quality Wound Rotor Induction Motor products in best price from certified Chinese Induction Motor manufacturers, Motor With Ce suppliers, wholesalers and factory on Made-in-China

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liquid starter for grinding mill motor - Popular Education

liquid starter for grinding mill motor - Popular Education

Wound rotor motor control for demanding industrial , machines such as; ball and SAG mills, , The M350 is a two stage liquid resistance starter, each stage , Outotec Hard start of mill motor, throwing ball charge Most mills are designed with a soft starter arrangement; a typical mill starter system could include a Liquid Resistor ,

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Medium Voltage VSDs in mill drive applications

Medium Voltage VSDs in mill drive applications

Ac Squirrel cage motors draw around 500% to 900% of Full Load Current (FLC) during starting This might not pose a huge concern when starting motors with low kilowatt (kW) ratings but as soon as one starts talking about mill drive applications where the installed motors are generally in the range of 800 kW up to 15 000 kW, it does become a concern

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ball mill liquid rotor starter - greenrevolutionorgin

ball mill liquid rotor starter - greenrevolutionorgin

Preprint 07-024421 Кб Thus, the main fixed speed drives for SAG and ball mills are slip ring motors (also called wound rotor induction motor) and synchronous motorsThese motors are started with a starting resistor (oil starters with stepping resistors or liquid starters)

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Low Voltage Three Phase Indcution AC Electric Wound Rotor ,

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

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Cycloconverter - Wikipedia

Cycloconverter - Wikipedia

CCVs are used for driving mine hoists, rolling mill main motors, ball mills for ore processing, cement kilns, ship propulsion systems, slip power recovery wound-rotor induction motors (ie, Scherbius drives) and aircraft 400 Hz power generation The variable-frequency output of a cycloconverter can be reduced essentially to zero

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Ball Mill Drives - Mineral Processing & Metallurgy

Ball Mill Drives - Mineral Processing & Metallurgy

Several types of ball mill drives can be furnished, made up of various combinations of gearing, motors and transmission equipment The correct combination to be selected takes into consideration power requirements, gear ratings, floor space, interference from other plant equipment and motor characteristics The main types are described and illustrated on these pag Motors ,

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Ball Mill Ball Mill Motor Starting Curves | Crusher Mills ,

Ball Mill Ball Mill Motor Starting Curves | Crusher Mills ,

wound rotor motor and ball mill starting curve BALL MILL DRIVE MOTOR CHOICES – Artec Machine Systems ball mills, the starting torque restrictions of some of the newer mill drive , In more recent times the wound ,

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TECHNICAL AND COMMERCIAL BENEFITS OF GEARLESS ,

TECHNICAL AND COMMERCIAL BENEFITS OF GEARLESS ,

operating cost and reduce availability of ball and SAG mills Options for variable speed are DC motors, energy recovery systems for wound rotor motors and frequency converter driv Improvements in power electronics technology and controls have resulted in variable frequency converters that ,

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