(II)An overexcited synchronous motor can generate reactive power and hence along with catering mechanical load it can stabilize the system. (III)it has higher operating efficiency. (iv)It is preferred for driving the loads requiring high powers at low speed e.g ball mills,crushers etc. For any further query plz write in the comment

3.6.1 Synchronous motors The torque ratings of synchronous motors designed to drive ball mills may be classified as low to intermediate torque ranges (normal ranges), and high torque. For ball mills applications NEMA identifies the minimum net torque requirements as following:

Permanent Magnet Synchronous Motor Control. Because permanent magnet synchronous motors must be driven with sinusoidal waveforms, the complexity of the control increases. A permanent magnet synchronous motor requires a control system, for example, a variable frequency drive or a servo drive.

Synchronous motors are usually used where there is a need for precise and constant speed. Low power applications of these motors include positioning machines. This kind of electric motors is also applied in robot actuators. Some other applications make use of synchronous motors such as ball mills, clocks, and record player turntables.

WEG Electric Machinery, WEM, synchronous motors incorporate special features making them the right choice for use in the corrosive environments found in paper mills. Rotor Rotor Construction The rotor consists of a spider on which the field poles, amortisseur (cage) windings and brushless exciter armature are mounted.

manufacturing and servicing large synchronous motors for the paper industry. Synchronous motor driving a grinder in a paper mill. Industry Standards WEM manufactures synchronous motors to meet all current industry standards including NEMA MG 1, IEEE 115, and ISO 9001:2000 standards. Motors can be designed to match your existing machines space

200 HP (150 kW) Synchronous Motor with starter, 180 RPM. Synchronous motor and starter used to power a 7 x 10 ft Marcy ball mill Motor: - 200 HP (150 kW) - 180 RPM - 460 V Starter: - Weaver Electric Custom Control Synchronous Starter - HP 300-200 - Voltage 575-460 - Ex...

To meet high-speed milling requirements, special-purpose machines are used with carbide end mills ranging from 20 to 50 mm dia., high-frequency spindles with oil mist lubricated ball bearings and co- axial, water-cooled high-frequency motors.--G.G.M…

Sag Mill Synchronous Motors. Prompt : Caesar is a famous mining equipment manufacturer well-known both at home and abroad, major in producing stone crushing equipment, mineral separation equipment, limestone grinding equipment, etc. large synchronous motor. The poles of ... stage mill (no ball mill after the SAG mill) and has a diameter and ...

Synchronous motors are normally used in applications in which a constant and precise speed is required. Typical applications of these low power motors are positioning machines. They are also used in robot actuators. Synchronous motors are also used in ball mills, watches, record players, and turntables.

4. Three-phase Synchronous Motor. Because its speed remains constant under varying loads, 3-phase synchronous motor is used for driving continuously operating equipment at constant speed such as ammonia and air compressors, motor generator sets, continuous rolling mills, paper and cement industries.

AC SYNCHRONOUS MOTOR VFD. 30000kW 6000V 750rpm; VFD AC SYNCHRONOUS MOTOR FOR ROUGHER MILL. 7000kW 1650V 50/100rpmN; WEIGHT=200T; VFD AC SYNCHRONOUS; MOTOR FOR FINISH MILL; 6800kW 3150V 900/1500rpm; AC SYNCHRONOUS MOTOR VFD FOR BALL MILL. ... Supply the necessary Technical …

Applications of Synchronous Motors. usually, synchronous motors are used for applications where precise and constant speed is required. Low power applications of these motors include positioning machines. These are also applied in robot actuators. Ball mills, clocks, record player turntables also make use of synchronous motors.

Dominion () 12'6" X 16' Ball Mill with 1,250 HP, 277 RPM, 4,000V Synchronous motor. Unit has a One Piece Shell with rubber liners. Designed as a Wet Overflow mill with Flanged Shell and Heads. Includes 332-tooth Ring Gear. Complete with Gener...

Used 2,000 HP Ball Mill for sale | Machinery and Equipment. Allis Chalmers Svedala ball mill, 13' diameter x 21' long, rubber-lined mill, with Siemens-Allis 2,000 HP, 4000 volt, 200 RPM synchronous motor, Eaton airflex clutch. Includes trommel discharge, ball mill rejects conveyor, lube system, etc. Offered complete with controls. New in 1979.

Synchronous motors SEF900 (Ex-p), 3600 kW, 13,200 V Application: Reciprocating compressors (petrochemicals) Synchronous motors SDL800, 3000 kW, 3100 V Application: Rolling mills (iron and steel) Vertical synchronous motors WEG also offers vertical synchronous motors, which can be supplied with ball bearing, roller bearing or angular …

Note 1. The weight of the large ball mill does not include the weight of the motor. 2. Other specifications of the ball mill can be provided according to the user's needs. 3. The motors in the table are all asynchronous motors. If the synchronous motor is selected when ordering, the technical parameters are for reference.

Synchronous motor and starter used to power a 7 x 10 ft Marcy ball mill. View Details Contact Seller Request Price. Expand. 3 Photos. 1000 HP 245 RPM Tamper, Frame SM-878, 1000 KVA, 2200 Volts ... Ball Mill, 900-1000 HP, 16" face, 144 Teeth per 1/2 section, Trunnion base, cap, and babbitt bearing insert, New pinion assembly ...

Comminution Circuits – Featured Projects ANTAPACCAY. Southern Peru, 2009-2013 (108,000 tpd – 80,000 tpd) Predictions of mill throughput from a porphyry copper open pit based on comminution test results of 22 composites and the available motor power of a "Standard" SAG Mill/Ball Mill circuit consisting of one 40 ft dia. x 22 ft EGL SAG Mill rated at 24 MW GMD and …

The site adopts ES580L driver + permanent magnet synchronous motor control + speed reduction. mechanism, which mainly drives the ball mill cylinder device to rotate. The adaptation of the ES580L driver perfectly solves the problem that the low-frequency output torque is not enough, and the overload capability is low, which may cause an alarm.

A synchronous electric motor is an AC motor in which, at steady state, [1] the rotation of the shaft is synchronized with the frequency of the supply current; the rotation period is exactly equal to an integral number of AC cycles. Synchronous motors contain multiphase AC electromagnets on the stator of the motor that create a magnetic field which rotates in time with the …

When a buyer desires to adopt a pneumatic clutch, we can design and style a revolving shaft or a shaft with punched holes in accordance to client specifications. The collection is a type of big-sized 3-stage AC synchronous motor mainly utilized to drive mills in mines, which includes grate ball mill, rod mill and coal mill.

Synchronous motors are used for constant speed, steady loads. High ... These motors find application in dr iving low speed compressors, slow speed fans, pumps, ball mills, metal rolling mills and process industries. Synchronous Motors Dr. Suad Ibrahim Shahl 9 . Methods of starting (1) by using a starting motor. This motor is directly coupled to ...

china factory special permanent magnetic synchronous electric motor tycx for ball mill, china factory electric motor, china factory iec standard synchronous magnet electric motor 2020814165433 CHINA FACTORY MINI INSULATION TYPE TYBZ D SERIES LOW SPEED THREE PHASE SYNCHRONOUS DIRECT DRIVE MAGNET (CENTER 660/1140 V, 450 …

Industry traction brush. Our industry traction brush has excellent commutation performance and good war resistance, and it was used widely for the large generator, DC motor, AC synchronous motor, lifting motor, mill motor and so on.

The AC Synchronous motor is an effective way to obtain a fixed speed at a very low motor system cost. No expensive driver or amplifier is necessary. Most synchronous motors are used where precise timing and constant speed are required. AC Synchronous Motors range in size from sub-fractional horsepower to over 10,000 horsepower.

blowers, motor ratings can reach or exceed 100,000 hp. Meeting the demand for large motors for the metals industry, TMEIC has produced large synchronous and induction motors for the operation of steel rolling mills. The power levels for these motors go up to about 10 MW. They are covered in a separate brochure.

3. Ball mill and motor 3 3.1 Ball mill load characteristics 3.2 Motor torque defined 3.3 Differentiating characteristics 3.4 Synchronous motor 3.5 Slip ring induction motor 3.6 Torque, efficiency and power factor 3.7 Motor torque pulsations 3.8 Construction and ventilation requirements 4.

Industrial Drivers. 31. In which of the following applications the load on motor changes in cyclic order? 32. In which of the following applications variable speed operation is preferred? 33. is not a part of ball bearing? 34. Light duty cranes are used in which of the following?