wound rotor motor mill drives manufacturer Grasping strong production capability, advanced research strength and excellent service, Shanghai wound rotor motor mill drives supplier create the value and bring values to all of customers.
WhatsApp)
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 ...
Most wound-rotor motors are used where high starting torque is required so an Altivar 312, Altivar 32 or Altivar 71 drive would be most suitable for this application. The wound-rotor motors use resistor to connect the rotor windings. The resistance can be adjusted to control the speed/torque characteristis of the motor. To use a variable ...
Jun 28, 2019· The method of powering mills such as AG, SAG and Ball has a Fixed speed drives, with wound rotor motors or synchronous machines, were the .
The use of wound rotor motors also provides for a low inrush situation, if the power system study demands it, and makes mill speed variation possible. This variation comes generally at a sace in motor efficiency because the reduced power demand from the mill is lost in the speed control circuit.
Search for used wound rotor motors. Find , Allis-Chalmers, General electric, P & H, and Titan for sale on Machinio. ... Hardinge Koppers SAG Mill 6800 HP (5100 kW) Two GE wound rotor induction motors: - 3400 HP - 710 RPM - 4000 V - Includes motor starter. - Includes lube system and temperature sensors. - F... Washington, USA. Click to ...
We have the largest inventory in the world composed of 100 to 20,000 HP AC electric motors in wound rotor, squirrel cage, synchronous, vertical, and D.C.
Wound Rotor Motor Mill Drives. 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.
Dec 19, 2014· For large mills requiring variable speed, the wound rotor motor and SER drive are economical for a total rating of approximately 2MW to 16MW. Above 16MW, the gearless drive (cyclo-converter) is typically used because gearboxes and pinion gears reach their present limit in size.
A wound-rotor motor, also known as slip ring-rotor motor, is a type of induction motor where the rotor windings are connected through slip rings to external resistance. Adjusting the resistance allows control of the speed/torque characteristic of the motor. Wound-rotor motors can be started with low
USE OF THE LATEST TECHNOLOGY TO OVERCOME THE DEMANDS OF MILL OPERATION Tatiana Ravani von Ow, M.Sc., Sales Manager Ring-geared Mill Drives ... were based on the slip energy recovery system with a wound rotor motor or AC drives. Faster ... of the gearless mill drives the operational output frequency is from 0.3 Hz up to about 5 - 6 Hz. ...
So, we are able to control the speed of this type of motor easily. A wound-rotor motor can be used in several forms of adjustable-speed drive. Certain types of variable-speed drives recover slip-frequency power from the rotor circuit and feed it back to the supply, allowing wide .
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 .
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. They set technical standards in terms of size, performance, economy and reliability.
TECHNICAL AND COMMERCIAL BENEFITS OF GEARLESS MILL DRIVES FOR GRINDING APPLICATIONS M. Ahrens, ABB, ... Options for variable speed are DC motors, energy recovery systems for wound rotor motors and frequency converter drives. ... the motor rotor. The concept to drive the mill this way is relatively
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 series of rotor bars, a set of insulated rotor .
Jan 29, 2009· Dear all, i have task to change two motor drives of wound rotor type with new VFD drives, data about old drives is given in atachments, i need some sugestions which drives should be good for this application
HiTorque Drive System: The SIEG drive on the mini lathe and mini mill incorporates a 350 Watt conventional wound rotor DC motor and PWM controller card. The gears provide two speed ranges to enhance low speed torque because the output torque of a DC drive like this falls off as the motor .
The primary drive is a 5000 HP (3730 KW) A/C Wound Rotor Motor. The hard charging Schorch motor keeps churning day after day. Dual axial pole magnets, cyclone air cleaning system, and split picking station allow for extremely clean and dense ferrous scrap. Slip Power Recovery Drive is included. Motor rotor current is managed in a switchable ...
The induction motor drive has many applications like it is used in fans, blowers, mill run-out tables, cranes conveyers, traction, etc. The induction motor drive is self-starting, or we can say when the supply is given to the motor, it starts rotating without any external supply.
A variable-frequency drive (VFD) or adjustable-frequency drive ... Wound-rotor synchronous motors can be run at even higher speeds. In rolling mill drives, often 200-300% of the base speed is used. The mechanical strength of the rotor limits the maximum speed of the motor.
AC Slip Ring/Wound Rotor Motors. AC Synchronous Motors. AC Vertical Motors. DC Motors. Full Voltage Starters. Reduced Voltage Starters. Variable Frequency Drives. Products. New Squirrel Cage Motors. Products. New Siemens Variable Frequency Drives. New Motortronics Soft Start Medium Voltage. Rebuilt Electric Motors. Large Electric Motors. Our ...
Wound-rotor Induction. Common in Australia and Africa, the wound-rotor motor also uses a gear system to transmit energy to the mill. It operates at a higher motor speed than the synchronous motor and needs an additional mechanical gear-box to reduce the motor shaft speed to the pinion speed needed to drive the mill.
Oct 10, 2016· Wound Rotor Induction Motor is used in applications which require smooth start and adjustable speed. Some of the applications of this motor include cranes, mills, hoists and conveyors. Wound rotor induction motor is also used in fans, blowers and mixers.
the wound rotor motor was preferred. In the late 1950s, when mills approached 2500 HP, the center drive mill arrangement with the enclosed geared drive using a high-speed synchronous motor became quite popular. In more recent times the wound rotor motor with the liquid rheostat has come into use in
WhatsApp)
Online Chat
Sales Hotline