This variable speed drive application is a dual-pinion SAG mill driven by two 5,000 kW wound rotor induction motors. Two TMdrive-10SPRs control motor speed by recovering rotor current
motors connected directly to the pinions driving the ring gear or by high speed motors that require a gear reducer between the pinions and the motors. Low speed motors are synchronous motors whereas the high speed solution is normally equipped with an asynchronous squirrel-cage motor. Fixed speed drives, with wound rotor motors or synchronous
4 SLI IN MOTOR BROCRE — The most innovative technology for motors and drives More than 125 years of experience for forward-looking products ABB's wound rotor motors are best suited to the most demanding applications. Where a high starting torque is required or a high inertia load needs to be started, then ABB's slip ring motors are the ...
Description: This motor was especially designed for applications where high torque to volume ratio is needed. It is a brushless DC motor with outer wound stator, rare-earth/cobalt magnets rotor and Hall effect rotor position sensor. Peak torque obtained on the axis at nominal. Continuous Torque: 35.4 In-lbs.
Jim McKee (deceased) Alabama Electric Motor Service Sheffield, Alabama Technical Education Committee Member The slip ring or wound rotor induction motor (WRIM) has been used in a variety of applications. Many of these applications use the WRIM's high starting torque capability while limiting current to start and run very high inertia loads such as hammer mills, rolling mills, centrifuges ...
AC Magnetic Motor Controls Euclid AC controllers are for use with new or existing wound rotor or squirrel cage motor drives. Depending on model and type, they are ideal for motor primary or secondary controls, eddy current brake hoists, counter torque hoists, lift bridges and other large machines.
Slurry Pump Drives; Conveyor Drives; Examples of completed projects include:-Windimurra Vanadium Mine Project: Windimurra Vandium Mine Application: Ball Mill Equipment: 1 x 5500kW 6 Pole 11000 volt Wound Rotor Induction Motor Location: Mount Magnet, Western Australia Kalgoorlie Consolidated Gold Mine Application: Ball Mill
Transcribed image text: A 1500 hp wound rotor motor drives a roughing mill setup to reduce a hot metal steel billet from 200mm x 200mm to 120mm x 120mm. Due to its continuous operation and in consideration of the heat, the gearbox, which the motor drives need constant circulating lubrication via an oil pump driven by a 7.5 hp motor.
The CSE Uniserve Rotor Drive Slip Energy Recover System (SER) is designed for speed control of wound rotor induction motors. Typical applications include mills, crushers, fans and pumps. Designed and manufactured in Europe to CSE Uniserve's specifications, offers …
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 windings.Is there any advice or similar applications out ...
All motors and generators serviced, including induction, synchronous, wound rotor, DC, explosion proof, hermetic, and large submersibles Recent accomplishments: Complete rewind of a 3,500 HP DC mill drive motor for a large steel mill, including having special trapezoidal wire manufactured
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MENZEL slip ring motors, also called wound rotor motors, are available in all current motor cooling and protection types for low-voltage from 75 kW as well as medium and high voltage up to 15000 kW. ... For operation in mill drives, slip-ring motors also have a major advantage because they can provide full-start-up torque out of a locked-rotor ...
4 SLI IN MOTOR BROCRE — The most innovative technology for motors and drives More than 125 years of experience for forward-looking products ABB's wound rotor motors are best suited to the most demanding applications. Where a high starting torque is required or a high inertia load needs to be started, then ABB's slip ring motors are the ...
Overloaded motors can overheat and lose efficiency. Many motors are designed with a service factor that allows occasional overloading. Service factor is a multiplier that indicates how much a motor can be overloaded under ideal ambient conditions. For example, a 10-hp motor with a 1.15 service factor can handle an 11.5-hp load
The series JR is a wound rotor 3-phase asynchronous motor meeting technical specifications of ministerial standard JB563-64, which can drive ventilator, compressor, water pump, crusher, ball mill, cutting machine, transportation machinery and other equipment and can be used as a primary mover in mechanical industry, power station and various industrial & miming enterprises.
The high-torque wound-rotor motor starts the mill under control of a resistor-contactor secondary or a stepless liquid rheostat. The latter can be regulated for constant torque or constant acceleration, or some combination as indicated. The liquid-rheostat is preferable, but a little more expensive for smaller drives.
Euclid AC controllers are for use with new or existing wound rotor or squirrel cage motor drives. Depending on model and type, they are ideal for motor primary or secondary controls, eddy current brake hoists, counter torque hoists, lift bridges and other large machines. Designed to take vibration and dirt, there is no sensitive "on-board ...
AC Squirrel Cage. AC Wound Rotor (Slip ring) DC Motors. Explosion Proof. Two speed motors. Vertical Hollow/Solid Shaft. AC Synchronous. Direct Drive. Mill Duty.
Wound rotor mot or solutions are use d mostly for th eir higher st ... In twin motor drive ... This article reviews various mill drive configurations and improved SM characteristics when used with ...
MOTOR DRIVES 45 Introduction 45 General arrangement of drives 45 Voltage Control – D.C. Output from D.C. Supply 47 Switching control 48 ... Slip energy recovery (wound rotor motors) 227 Single-Phase Induction Motors 227 Principle of operation 227 Capacitor-run motors 229 Split-phase motors 230 Shaded-pole motors 231
A paper mill drive. d. A cement mill drive. 6. In overhead travelling cranes_____. a. Short-time rating motors are used. b. Continuous minimum rating motors are used ... Wound rotor induction motor. 21. The drive, that can be used for s and winches is_____. a. DC shunt motor with Ward-Leonard control. b. AC slip-ring induction motor with ...
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 …
Toshiba products for the mining and minerals industry include induction, wound rotor and synchronous motors, UPS, process and intelligent controls, motor controls, and power distribution protection solutions. The company reported that it has supplied mining operations throughout North America and South America, as well as in Australia.
475kw Jr Series Wound Rotor Slip Ring Motor Ball Mill Motor. JR series motors can be used as prime movers in mines, machinery industry, power plants and industrial and mining enterprises to drive various machinery such as fans, compressors, water pumps, crushers, ball mill machinery and other equipment.... Send Inquiry Chat Now
The invention claimed is: 1. Method for the control of a wound rotor synchronous motor, comprising measuring a plurality of electromagnetic entities indicative of the operation of said motor, generating voltage on a stator of said motor for obtaining a stator current, further generating further voltage on said rotor to obtain a rotor current, before said generating and said further generating ...
The following typical motor data is based on the information in AISE Standard No. 1A, AC Mill Motor Standards and NEMA Standards for Wound Rotor Motor Secondary Data. Motor primary currents are based on data published by several motor manufacturers. This information may be used to select the proper crane controllers and crane accessories.
Electric Drives - AC Motors (Description and Applications) ... Wound Rotor Induction Motor. Now of historic interest only, these motors were designed to permit control of the speed - torque characteristics of the machine. They used conventional windings on the rotor which were accessible through slip rings. The rotor windings were not connected ...
(SC) motors with VFCs or Wound Rotor Induction Motors (WRIM) using slip energy Recovery (SER) devices, with a typical motor shaft rated speed of 750 rpm up to 1200 rpm, depending on the electrical network (50 Hz or 60 Hz) and b) the simplified direct drive type; a more energy efficient solution either with Low Speed Synchronous Motors
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.
A wound rotor induction motor (also known as a would round motor or slip ring induction motor) is defined as a special type of 3 phase AC induction motor designed to provide high starting torque by connecting an external resistance to the …
DIRECT CONNECTED Ball Mill DRIVE. When power exceeds 300 HP a direct connected drive is recommended. This drive is also applicable for lower power requirements if desired. Synchronous motors are preferred, but in some cases wound rotor motors may be used. Motor speeds will vary from 225 rpm to 450 rpm.
ABB's drives solutions, tied up to comprehensive packages of supply and services, create real added value and economical benefit to our customers over the whole life cycle of operation. We have solutions for all motors and drives cement applications: LV & MV squirrel cage motors. LV - frequency converters. -- Single drive up to 2800 kW.