to a gear drive with air clutches. motor, $1.28 million each 6000 Two secondary ac synchronized motors coupled to a gear mill, $2.5 million ball mills, 18x27 drive with an air clutch, motor, $602,000 6050 ... SAG mill powered with ac synchronous motors. However. the SAG mill with a more expensive a~d has the added-fe~-ture of being …
Synchronous motors (SMS) continue to be a viable alternative to induction motors because of efficiency advantages. Since SMs have long been used to provide leading kvar for power factor (PF) improvement and to help with the device switching in load-commutated inverter (LCI) drives, these machines are efficient prime movers for …
Figure 7 – ABB synchronous motor on Ball Mill 1 The drive requirements for the Copper Mountain mills are as follows: Rated power: 2 x 6340 kW (2 x 8500 hp) SAG mill rated …
to a gear drive with air clutches. motor, $1.28 million each 6000 Two secondary ac synchronized motors coupled to a gear mill, $2.5 million ball mills, 18x27 drive with an air clutch, motor, $602,000 6050 ... SAG mill powered with ac synchronous motors. However. the SAG mill with a more expensive a~d has the added-fe~-ture of being …
Synchronous motors continue to be a viable alternative to induction motors because of efficiency advantages. Long used for providing leading kVARs for PF improvement and helping with the device switching in Load Commutated Inverter (LCI) drives, these machines are efficient prime movers for large Mill applications. Both in motor efficiency and in low …
Synchronous motors (SMS) continue to be a viable alternative to induction motors because of efficiency advantages. Since SMs have long been used to provide leading kvar for power factor (PF) improvement and to help with the device switching in load-commutated inverter (LCI) drives, these machines are efficient prime movers for large …
Quality control: A portable … SAG mill. Synchronous motor drive with air clutch. Product Application by Industry (X) Ball mills – These mills use forged steel balls up … the clutch to accelerate the mill. ... Figure 15 – Center ball mill drive with air clutch and synchronous motor 7.0 Application experiences … damaged the rectifier ...
Use of a clutch permits the mill motor to be ... Figure 15 – Center ball mill drive with air clutch and synchronous motor » More detailed. Mining Equipment, Used Mining Equipment … Inching drive, Clutch, Lube System. Mills were purchased in 2008 but never installed. …
Synchronous motor: JEC-2130 (2000) Induction motor: JEC-2137 (2000) Rotating electrical machines: IEC 60034 • Overload withstand strength confirms to JEM 1157 (2002) equivalent to NEMA MG1 Motor type • Synchronous motor with salient laminated poles • Squirrel cage rotor induction motor Motor Construction • Top forward, twin drive
Abstract: In the process of selecting a suitable motor for a cement mill, there are several issues to consider that, for the purpose of analysis, can be grouped into two distinct categories. The first category is the technical analysis, which is based on engineering considerations that evaluate the merits of either a synchronous or a slip-ring induction …
For special applications such as driving large compressors and blowers, motor ratings can reach or exceed 100,000 hp. Meeting the demand for large motors for the metals …
We produce high voltage generator,synchronous motors,ect. English Deutsch Français Español Русский Português ... high speed synchronous motors compressor synchronous motors mill synchronous motors. Generators. Hydro generators Wind generators Fuel generators. Submersible Motors IP68. Oil Drilling …
Zion Power Station - a decommissioned nuclear power plant close to Chicago, USA. In order to use the two 800MW generators as synchronous condensers the steam turbines were disconnected and an SSS Clutch added to each generator allowing a mobile motor/torque converter package to be coupled to the machine to drive the generator up …
Ringmotors were originally applied in the cement industry where relatively small diameter but long tube mills were used. This experience provided the basis for similar drives for …
Often used in large Mills in the cement and mining industry, these motors were driven by LCI variable-frequency drives (VFDs) or used with direct start with a …
UNIT 7 SYNCHRONOUS MOTOR Structure 7.1 Introduction Objectives 7.2 Synchronous Motor 7.2.1 Working Principle 7.2.2 No Load Conditions 7.2.3 Effect of Load on Motor 7.3 Power Output 7.4 Starting of Synchronous Motor 7.5 Hunting and Damper Winding 7.6 Synchronous Condenser 7.7 Comparison of Induction and Synchronous Motor 7.8 …
They will be driven through clutches by two 9,000-hp, 176.5 rpm adjustable-speed synchronous motors made by GE Ltd. of Canada. Bigger mills fuel drive technology race
Driven equipment (mill, conveyor, slurry pump…) Components altering the rated speed (gearboxes, girth gear / pinion) The electric motor Starting devices for the motor (VSD, CCV, LRS, clutch…), which are necessary because a direct across-the-line start of high power motors with load would result in
Another solution is to use the so-called "gearless drive." A cyclo-converter reduces the power frequency and a synchronous motor is either wrapped around shell or mounted on a trunnion extension. This makes the mill essentially a part of a synchronous .motor rotor with the stator in its usual position around the rotor.
A synchronous motor is one in which the rotor normally rotates at the same speed as the revolving field in the machine.The stator is similar to that of an induction machine consisting of a cylindrical iron frame with windings, usually three-phase, located in slots around the inner periphery.The difference is in the rotor, which normally contains …
ABB synchronous motors help our customers to cut operating, maintenance and energy costs while lowering environmental impact. ABB is the market's leading supplier of synchronous motors and generators. All over the world our synchronous motors are delivering superior performance in industrial processes, the
For grinding mill applications,GE has developed a drive using two, high efficiency, synchronous motor driven pinions on one bull gear. A Quadramatic load sharing drive uses a special winding in addition to the amortisseur winding to dynami- cally alter the rotor flux. These continuous adjustments maintain the load sharing between the two ...
Synchronous motor and induction motor are the most widely used types of AC motor. Construction of a synchronous motor is similar to an alternator (AC generator).A same synchronous machine can be used as a synchronous motor or as an alternator. Synchronous motors are available in a wide range, generally rated between 150kW to …
Allis Chalmers Svedala Ball Mill - 13 x 21 ft. - Rubber-lined mill - Siemens-Allis 2,000 HP, 4000 volt, 200 RPM Synchronous Motor - Eaton Airflex Clutch - Trommel Discharge, Ball mill Rejects Conveyor, and Lube S... USA. Trusted Seller. ... Description 9′ x 10′ Allis Chalmers Ball Mill, 400 HP Motor, Eaton Airflex 20VC1000 Clutch Plus Spare
frequency drives (VFDs) or used with direct start a clutch system that would synchronize the motor first to with overcome low starting torques. This paper reviews various Mill …
Often used in large mills in the cement and mining industry, these motors were driven by LCI variable-frequency drives (VFDs) or used with direct start with a …
–Synchronous with pinion •one or two pinion configuration, up to 15.6 MW –Induction motor with speed reducer ... power Mill Shell Motor Output 0.97 0.96 0.96 1.0 0.985 0.97 CCV/Transformer Input Motor Input 0.98 0.99 0.99 Gearless Synchronous Induction. Step 3: Which Type?
It can be either separately excited or non-excited motor i.e. the former requires a separate DC source energizes the rotor windings and generates a magnetic field while the latter describes a synchronous motor whose rotor is designed to be magnetized by the rotational stator magnetic field and rotates with it.