Selecting AC Induction Motors for Cement Plant Applications (on photo:3,500 kW ball-mill drive for a cement plant in England via emz.de) Although motors may appear to be the least complicated component in the specification of cement mill equipment, this article shall try to demonstrate that cement plant applications present an immense matrix of ...
A variable frequency drive is a device that is used to control the power consumption of the motors. If we use VFD then we can decrease the amount of energy that the motor used for its operation. A variable frequency drive can vary the speed and torque of a motor and it is done by controlling the frequency of the power to the motor.
Cement-specific solutions Solutions for a sustainable cement production Cost-efficient production and a simultaneous emissions reduction can only be achieved by using components that are perfectly adapted to one another. In its SICEMENT product family, Siemens links automation, drive, and power supply systems to form one overall solution.
7. Slip Ring Induction Motor. It has high starting torque and large overload capacity. The speed of slip ring induction motor can be changed up to 50% of its normal speed. Slip ring induction motor is used for those industrial drives which require high starting torque and speed control such as lifts, pumps, winding machines, presses, line shafts, elevators …
The first Gearless Mill Drive (GMD) with a power of 6.5 MW was installed 1969 in a cement milling process in the cement plant Le Havre in France. In the first few years, the GMD was only used in the cement industry. The GMD is also known as "wrap-around motor" or "ringmotor". Almost 25 years later, the first GMD with 12.0 MW power
Abb Drives In Cement Medium Voltage Drives For Reduced The ACS 2000 drive system, rated at 550 kW, controls the clinker cooler exhaust fan of Jura Cement's cement plant in Wildegg, Switzerland. The clinker cooler exhaust fan plays a critical role in the cement making process. Raw mix enters the kiln and is heated to 1,450 degrees Celsius where it.
An Electric Drive can be defined as an electromechanical device for converting electrical energy to mechanical energy to impart motion to different machines and mechanisms for various kinds of process control. 1.1 BLOCK DIAGRAM OF AN ELECTRICAL DRIVES The basic block diagram for electrical drives used for the motion control is shown in the
6 Electrical Drives for Crane Application Nebojsa Mitrovic 1, Milutin Petronijevic 1, Vojkan Kostic 1 and Borislav Jeftenic 2 1University of Nis, Faculty of Electronic Engineering, 2University of Belgrade, Faculty of Electrical Engineering, Serbia 1. Introduction A crane is the type of machine mainly used for handling heavy loads in different industry
Answer. c. 6. A 3-phase cycloconverter is used to obtain a variable-frequency single-phase a.c. output. The single-phase a.c. load is 220 V, 60 A at a power factor of 0.6 lagging. The RMS value of input voltage per phase required is. 311.12V. 376.2V. 220 V. 266 V.
Continous start and stop:- Group drive can be used with advantage in those industrial processes where there is the sequence of continuity in operation and where it is desirable to stop these processes simultaneously as in a ﬂour mill. Ques 6. The disadvantages of group drive electric machine is/are. Answer 3.
Cement plants are one of the largest consumers of energy. Their electrical energy costs account for about 15 20 percent of the total production cost. The large fans and motors used in the production process consume a major part of electrical energy. With the use of Variable Frequency Drives (VFDs) the energy consumption can be reduced from
1.1.2 a) Draw the block diagram of an Electric drive and state function of each Block. b) Describe briefly types of motor used. c) State and explain the functions of various modulators. d) Describe briefly the source employed in electric drives. e) State the components of control units. 1.1.3 State the advantages of electric drives
It is the purpose of this paper to deal especially with the employment of electric power, derived from hydroelectric systems of distribution, for the operation of textile mills. It is impossible in a paper of this kind to go very fully into detail, and no attempt will be made to discuss the forms of drives, kind of motors or, in fact, any other technical details, since any one of the more ...
ELECTRIC DRIVE SELECTION OF MOTOR FOR DIFFERENT TYPES OF LOADS OR SERVICE BY Prof. Sagar B. Kudkelwar Electrical Engineering Department Ballarpur Institute of Technology, Ballarpur. 2. Rolling Mills Metal rolling is one of the most important manufacturing processes in the modern world. Metal rolling is often the first step in creating …
Explanation: Cycloconverters are mainly used where precise speed control is needed. It means cycloconverter is not suitable for cement mill drive as well as compressor drive. Papermill requires constant speed drive. So cycloconverter fed induction motor drive is widely used for machine tool drive.
A cement mill (or finish mill in North American usage) is the equipment used to grind the hard, nodular clinker from the cement kiln into the fine grey powder that is cement.Most cement is currently ground in ball mills and also vertical roller mills which are more effective than ball mills.
Motor Duty Class and its Classification. October 25, 2020. February 24, 2012. by Electrical4U. Now a days, in almost every applications, electric motors are used, and to control them electrical drives are employed. But the operating time for all motors are not the same. Some of the motors runs all the time, and some of the motor's run time is ...
Inching drives in a cement plant have two possible applications that support the production of product. The first of which is the heart of any ... Electric Motors IC Engines 1.00 on mills 1.25 Mils 1.25 on kilns 1.50 on kilns with 0.5 de-rate on IC power Table 5 Reducer service factors In general use, few applications of gear ...
This drive system is widely used in large number of industrial and domestic applications like factories, transportation systems, textile mills, fans, pumps, motors, robots etc. Drives are employed as prime movers for diesel or petrol engines, gas or steam turbines, hydraulic motors and electric motors .
coke, which is either produced onsite or purchased. This iron is used as a charge to produce steel in a basic oxygen furnace (BOF). Alternatively, an electric arc furnace (EAF) steel producer, also known as a mini-mill, uses EAFs to produce steel from steel scrap and other iron-bearing materials. Table 2.6-1 shows the
In this technical article electrical systems in cement plant will be touched upon. All machines are driven by electric motors. Majority of the motors are 400- 440 volts. A selected few motors of higher ratings are MV motors with 3300, or 6600 or 11000 volts. Most motors are fixed speed and unidirectional motors.
Variable frequency drive (VFD) that uses power electronic components to control the motor speed by changing the frequency of input power of the motor. 2. VSD that control the speed of either the motor or the equipment driven by the motor (fan, pump, compressor, etc.). This device can be electrical or mechanical.
By using variable speed drives (VSD) to control high efficiency motors in your cement manufacturing process, you can reduce energy consumption significantly compared to traditional fixed speed motors. VSDs also provide you an accurate control for your processes, and our PLCs help all your processes to work in co-ordination with each other.