Maintenance a primer on static, dynamic, and online motor testing abstract this paper presents current methods of electrical test and trend analysis of the operational health of electric motors in the context of successful predictive maintenance programs. Electrical signature analysis, predictive maintenance. Since here we are talking about maintenance of induction motor, and it is of two types. Some sections may explain explicitly between the three. Spare parts, installation and maintenance of ac motors mammoet. Instructions for the installation, operation and maintenance of elektrim three phase induction brake motors 143t286t frame per nema standards type sgm tefc ip55 a24011. Advantages of 3 phase induction motor generally easy to build and cheaper than corresponding dc or synchronous motors induction motor is robust the motor is driven by the rotational magnetic field produced by 3 phase currents, hence no commutator or blush. So the main idea behind motor maintenance is to prevent breakdown rather than repairs them. If left running under rated conditions, an induction motor will provide many years of troublefree service and may even outlast the building. A wellplanned preventive maintenance program is the key to dependable, longlife operation of motors and generators. Induction motor seminar ppt, pdf report study mafia. Operating instructions and maintenance manual for low voltage. Simple and rugged design, lowcost, low maintenance and direct connection to an ac power source are the main advantages of ac induction motors. Induction motors installation operation generators.
This guide provides information on establishing an effective maintenance program to help prevent unexpected motor failures, costly downtime, and unnecessary maintenance costs. Although management probably realizes the value of a good preventive maintenance pm program, they. Abb ability life cycle assessment for induction motors english pdf leaflet service note preventive maintenance for synchronous motors and generators english pdf leaflet service note abb ability condition monitoring for shaftlines english english pdf leaflet. Predictive maintenance by electrical signature analysis to. The frequency of routine service varies widely between applications. Pdf predictive maintenance by electrical signature analysis to. Pdf predictive maintenance by electrical signature. Configuration manual, 1ph7 induction motors for machine tools.
Predictive maintenance by electrical signature analysis to induction motors 505 in which taps was inserted to the gradual introduction of imbalance in power depending on the insertion of short. Induction motors installation operation generators maintenance. Induction motors were invented by nikola tesla in 1888 while he was a college student. These motors experience different types of failures and faults associated with insulation. Spare parts, installation and maintenance of ac motors. To provide you, our customers, with necessary technical knowhow in examination, operation and maintenance of tatung. Predictive maintenance by electrical signature analysis to induction motors 491 interesting and little explored field surfaces, which is the introduction of predictive maintenance techniques based on electrical signature analysis. Additions to the various factors influencing the selection of. Spare parts, installation and maintenance of ac electric induction motors. The owner of the motor is responsible for ensuring all required maintenance is performed and properly documented. In the present day, induction motors consume between 90 to 95 percent of the motor energy used in industry. If motor is to be reshipped alone or installed to another piece of equipment the. In general, the induction motor is cheaper and easier to maintain compared to other alternatives. This checklist incorporates all range of motors equipment.
General purpose enclosed motors can be used where they are exposed to dirt, moisture, and most outdoor conditions. Abb maintenance abb service for motors and generators. Maintenance and troubleshooting of electric motors reliance electric posted 11005 motor maintenance scheduled routine care introduction the key to minimizing motor problems is scheduled routine inspection and service. Electric motor predictive and preventive maintenance guide electric motor failure could result in lost capacity as well as excessive repair and maintenance costs. Maintenance of induction motor all about squirrel cage. Electric motor predictive and preventive maintenance guide. Environment depending on the site conditions it may be necessary to create a suitable stores area to hold the motor prior to installation. A motor may require additional or more frequent attention if a breakdown would cause health or safety problems, severe loss of production, damage to expensive equipment or. Nov 18, 2015 repair and refurbishment of ac induction motors the repair and refurbishment of an ac induction motor should include the following steps. A motor may require additional or more frequent attention if a breakdown would cause health or safety problems, severe loss of production, damage to expensive equipment or other serious losses. Includes rib cooled motors, types hxr and nxr, and modular induction motors, frame sizes 400630. Electric motors are often allowed to run with minimal maintenance until output is down due to a burnout or catastrophic. Maintenance instructions for three phase induction motors frames 143t 449t 18060 109 ave edmonton, ab t5s 2k2 phone.
Main motor windings and all accessory devices associated with the work area are disconnected from. Regular motor maintenance to avoid failure and prolong its lifespan photo credit. Photographs are required in some cases prior to disassembly of the motor to. Predictive maintenance by electrical signature analysis to induction motors. Code of practice for installation and maintenance of. These instructions do not support to cover all details or variations in equipment nor to provide for every possible contingency to be met in connection with installation, operation or maintenance. The ideal motor maintenance program aims at preventing breakdowns rather than repairing them. Perform a visual inspection to assess the general condition of the motor. Systematic and periodic inspections of motors are necessary to ensure best operating results.
Documentation of storage maintenance, alignment and regreasing may be required for certain warranty considerations. Motor current signature analysis, condition monitoring, induction motors. There must be no vibration, twisting, misalignment etc. Before starting maintenance procedures, be positive that.
In addition induction motor types, main parts were discussed. This paper deals with the basic knowledge for technicians to study about the concept of maintenance of induction motor. Simple steps to electric motor maintenance r baker. Aug, 2017 the ideal motor maintenance program aims at preventing breakdowns rather than repairing them.
Electric motor predictive and preventive maintenance guide abstract electric motor performance is vital to the reliable and efficient operation of power plants. After removal of shaft clamp, turn shaft by hand to check that it turns freely. Search weginstallationoperationand maintenance of threephaseeletric motors forexplosiveatmospheres50000703manualenglish. Operating instructions and maintenance manual for low. A 3 phase induction motor can be used for different applications with various speed and load requirements. Various types of ac induction motors are available in the market. Also the foundation of pump a foundation of motorpump must be rigid and secure to provide adequate support. The induction motor is made up of the stator, or stationary windings, and the rotor. These symbols appear in this document whenever it is. Maintenance manual for low voltage ac induction motors operating instructions and motors for the long run.
Well designed and manufactured, tatung 3phase induction motors function excellently and have the longest service life expectance. A wellplanned electric motor preventive maintenance programme is the key to dependable, longlife operation of electric motors. In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to know and speak the laws that govern them. The very first thing that you should do before starting any type of maintenance on a motor is a visual inspection, a lot of times the trouble can be found just by looking, because if the problem is that bad then it should be very obvious by observation. In the first part of our presentation, we are going to discuss. Preventative and predictive maintenance programs for motors are effective practices. Maintenance as the name suggests it is the action necessary for retaining or restoring a piece of equipment or machine to the specified. Many sections are mainly applicable to the lvmv induction motor equipment and many others are applicable to either synchronous or dc motors. The electric energy generated purchased by consumers for different needs. The magnetic field on the rotor is either generated by current delivered through slip rings or by a permanent magnet. This instruction manual describes and provides instructions for installation, operation and maintenance of induction motors. A costeffective preventive maintenance program for small induction motors should focus on external factors because service personnel can easily assess them and identify potential problems.
However, should the motor require service, this manual includes a section that assists the. The induction motors constitute the major portion of motors in domestic and industrial applications. Ac induction motors are the most common motors used in industrial motion control systems, as well as in main powered home appliances. Installation, operation and maintenance manual of electric motors this manual provides information about weg induction motors. In a good preventive maintenance program with detailed checks, the person in charge should have a record card on file for every motor in the plant. Installation and maintenance manual for nema low voltage electric motors 4 t his manual covers all the threephase and singlephase asynchronous squirrelcage induction motors, from 140t to 580t frame sizes. Generally, it is known as the asynchronous motor because its running speed is less than its synchronous speed. Italian, russian, english, dutch, simplified chinese, german, french, spanish, brazilian portuguese size. Motor preventive maintenance motor preventive maintenance, especially for small induction motors, is more than just inspecting and maintaining the motor itself. These instructions do not support to cover all details or variations in equipment nor to provide for every possible contingency to be met in. Maintenance of induction motors second revision 1 scope 1. The motors described in this manual are subject to continuous improvement and all information is subject to change without notice.
Installation and maintenance threephase induction motors 5 4850 en 2019. Regular motor maintenance to avoid failure and prolong. Maintenance safe maintenance practices performed by qualified personnel are imperative. Generally speaking, motors and motor parts should be maintained and tested at least every 6 months. Keywords induction motor, maintenance, troubles, remedies introduction smaller loads, such as household appliances an induction or asynchronous. Manual for induction motors and generators both for safe and hazardous area in brazilian portuguese language. Warranty see your sales contract for warranty coverage. Pdf predictive maintenance by electrical signature analysis. Free download induction motor seminar ppt, pdf report. Almost all electrical equipment requires planned inspection and maintenance being carrying out. The high cost of the resultant downtime eats deeply into profits.
Equipment connected to the shaft will not cause mechanical rotation. Maintenance instructions for three phase induction motors frames 143t 449t. In modern plant operations, unscheduled stoppage of production or long repair shutdowns are intolerable. Pdf an application of msca on predictive maintenance of. Severeduty enclosed motors can be used in highly corrosive or excessively moist areas. The squirrel cage induction motor was designed for an extended service life under very demanding conditions. They should be brought to the attention of all persons who install, operate or maintain this. This ensures electrical equipment is kept in good working condition at all times. Induction motor theory jerry bednarczyk, pe course content introduction the ac induction motor is well suited to applications requiring constant speed operation. Repair and refurbishment of ac induction motors the repair and refurbishment of an ac induction motor should include the following steps. A strategy for correcting the potential problem can be developed or additional tests can be performed on the motor to determine the gravity of the situation.
Your brook crompton motor is designed for long life, and. Horizontal squirrel cage mediumvoltage induction motor. Installation and maintenance threephase induction motors. Electric motors for explosive atmospheres instructions manual for installation, operation and maintenance of electric motors date. An induction motor can be defined as the ac electric motor device in which a power source fed by the alternating current with the help of a primary winding. The failure of one or more critical motors could cause lost capacity and excessive repair and maintenance cost. Do not lift both the motor and driven equipment with the motor lifting means. Search weginstallationoperationandmaintenanceofthree. In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to. Including the motors in the maintenance schedule for the driven machine or general plant equipment is usually sufficient. Dripproof motors are intended to be used in a wellventilated place reasonably free of dirt and moisture. Squirrel cage induction motor requires significantly less maintenance as it does not contain brushes, commutators, slip rings.
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