ball mill wound rotor moror starting

wound rotor motor and ball mill starting curve - …

A wound rotor motor is a type of three-phase induction motor, designed to provide high starting torque for heavy loads, while requiring very low current. ... pumps, and grinding mills – because the wound rotor design allows the ...

cement mills 800 kw slip ring motor starting-[crusher and ...

CR4 - Thread: Suitable Starter for Ball Mill Starting …. Suitable Starter for Ball Mill Starting Through Slipring Motor 11 kV 2600 kW...Generally LRS is used for Cement Ball mill... are used with slip ring motor.In slip ring...

Synchronous motor - Wikipedia

The principal components of a synchronous motor are the stator and the rotor. The stator of synchronous motor and stator of induction motor are similar in construction. With the wound-rotor synchronous doubly fed electric machine as the exception, the stator frame contains wrapper plate. Circumferential ribs and keybars are attached to the wrapper plate.

Efficiency of wound rotor vs VFD - Electric motors ...

Sep 01, 2005· A ball mill similar to this one had the same problem which was solved by the use of a fluid coupling between the motor and gearbox. The motor is a 4000hp WRIM using an old liquid rheostat. I suspect that the rheostat may be overfilled or not functioning correctly.

Medium Voltage VSDs in mill drive applications

Two mills typically used are Ball Mills and SAG ... ally been large wound rotor induction motors which are commonly known as slipring motors. In order to start these motors with the ... when starting motors with low kilowatt (kW) ratings but as soon as one starts talking about mill drive applications where the installed

LIQUID RESISTANCE STARTERS - nhp.com.au

starting of wound rotor motors. Applications Suitable for use with heavy industrial machines such as; ball and SAG mills, crushers, conveyors, compressors, chippers, fans, pumps, mixers and saws Key benefits • Simple,easytounderstand technology • Optimum control over starting

liquid rotor s tarter for ball mill - durbanlizards.co.za

The EPM rotor starter is normally used to control the starting of a slipring motor, ... for slipring motors, also named electrolytic starters or Liquid Resistance Starters ... for some specific applications (control of the slip for the ball mills for example).

ball mill wound rotor moror starting - boatstorage.co.za

soft start motor ball mill can realize subsection starting of main motor and cylinder of ball mill. ...Liquid Resistance Soft Starter (applied for wound rotor China ball mill ...

Three-Phase Induction Motors - WEG

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.

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

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.

ball mill wound rotor moror starting - mabsuniquetouch.co.za

Wound Rotor Motor: What is it? - Motion … A wound rotor motor is a type of three-phase induction motor, designed to provide high starting torque for heavy loads, while requiring very low current.

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 …

liquid rotor starter for ball mill - Grinding Mill China

The ball mill is key equipment in grinding industry, especially in mineral ore dressing plants. It is widely used for the cement, the silicate product, new type building material, fire-proof material, chemical fertilizer, black and non …

Wound Rotor - TECO-Westinghouse Motor Company, a …

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.

Milling - Energy intensive and high maintenance

Ball mills on the other hand, as far as process requirements are concerned, did not require variable speed. ... motor starting directly on line requires a clutch • When clutch system are there needs to be air or another media ... Wound rotor motors solve the above issue however the motor is

liquid rotor starter for ball mill - Grinding Mill China

The ball mill is key equipment in grinding industry, especially in mineral ore dressing plants. It is widely used for the cement, the silicate product, new type building material, fire-proof material, chemical fertilizer, black and non-ferrous metal, glass, ceramics and etc.

Wound Rotor Induction Motor with Liquid Rheostat Arcing ...

Sep 18, 2011· 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.

3 - PAPER - Michael Hamilton - FINAL - IDC-Online

and has a ball mill driven by a 3.3kV 600kW motor fed from a step up transformer. The mill motor is started by use of a secondary liquid resistance ... power quality of the network during ball mill starting. This has allowed network ... reduction in resistance in the rotor windings that is used to reduce motor losses. Care should be taken not ...

Wound rotor motor - All industrial manufacturers

The AIM and AIFM are a slip ring wound rotor three-phase asynchronous electric motor, ... cement ball-mill twin drives Slip Ring or other wound type rotor motors are used all over the world. CG Hungary is the first in the world to successfully break this tradition with double ...

type of induction motor that drive ball mill – Grinding ...

This type of drive motor has come into limited use mostly outside of North America and with mills above 6000HP, Drive 4 - A 5000 HP, 1200 rpm induction motor with a VFD controller as a soft-start to a dual pinion gear driven mill; a Drive 5.

Three-phase induction motor - Homepage | WEG

2 Wound rotor three-phase induction motor Wound rotor three-phase induction motor with motorized brush lifting system These motors are recommended in cases in which the

"EXPERIENCE WITH SYNCHRONOUS AND - Cimentec

EXPERIENCE WITH SYNCHRONOUS AND SLIP RING INDUCTION MOTORS DRIVING CEMENT MILLS Nathan Schachter, P Eng ... Ball mill and motor 3 3.1 Ball mill load characteristics ... motor a) Starting or locked rotor torque is defined as the minimum torque

Liquid rotor starter for ball mill samac mining - YouTube

Feb 14, 2016· Liquid Resistance Starter ... and wound rotor, … cement mills, coal and ore bridges, coal mines ....Liquid Rotor Starter For Ball Mill China famous mining . wound rotor motor and ball mill ...

BALL MILL DRIVE MOTOR CHOICES - artec-machine.com

BALL MILL DRIVE MOTOR CHOICES For Presentation at the ... ball mills, the starting torque restrictions of some of the newer mill drive configurations, and the softness ... the wound rotor motor was preferred. In the late 1950s, when mills approached 2500 HP, the center

Replacing slipring with induction motor - Electrician Talk ...

Sep 24, 2014· i am running a Ball Mill using a 750HP, 4 pole,slip ring motor at 3.3KV. i want to upgrade the system to a squirrel cage motor and VSD at 525Vac.

"EXPERIENCE WITH SYNCHRONOUS AND - Cimentec

EXPERIENCE WITH SYNCHRONOUS AND SLIP RING INDUCTION MOTORS DRIVING CEMENT MILLS Nathan Schachter, P Eng ... Ball mill and motor 3 3.1 Ball mill load characteristics ... motor a) Starting or locked rotor …

Wound Rotor - TECO-Westinghouse

Ball and Sag Mills Cranes Hoists Pumps Fans and Blowers Chippers Conveyors Banbury Mixers ... during motor start-up. What makes the wound rotor motor a unique induction machine is its rotor. Instead of a series of rotor bars, a set of

China Three Phase Wound Rotor Ball Mill Motor - China Ball ...

Ball Mill Motor, AC Motor, Electrical Motor manufacturer / supplier in China, offering Three Phase Wound Rotor Ball Mill Motor, Yr3 Series Low-Voltage Slip Ring Electric Motor, Low Voltage Explosion Proof Universal Blower Motor and so on.

slip ring induction motor for sag mills - spydo.in

ball mill soft starter - arcadria slipring motor softstarter application ball mill - YouTube- soft start motor ball mill,9 Dec 2013, 72 Ball mill with slip ring induction motor, for SAG and ball mills are slip ring, operation of a, Slip-ring Motor Starter, slipring motor …

ring motor for ballmill - seadoone.co.za

Ring Motor For Ballmill - scbmeu. ring motor for ball mill liquid resistance starters - NHP Wound rotor motor control for demanding industrial applications machines such as; ball and SAG mills, crushers draw, a wound rotor (or slip ring) motor can Chat With Sal slip ring motors for ball mill - …

Rotor Resistance Starters - Home – OHMIC RESISTORS ...

Rotor Resistance Starters Slip Ring Motors are primarily used to start high inertia load or a load that requires a starting torque across a full speed range. By correctly selecting the resistors inserted into the Rotor circuit, the motor is able to produce maximum torque …

wound rotor motor and ball mill starting curve - …

wound rotor motor and ball mill starting curve. Home; wound rotor motor and ball mill starting curve; DEH-1300. Starting torque is usually around 200% even though current is at 600%. This is when slip is the ..... important to note that the wound rotor motor typically has high starting torque (300-400%).