Before starting maintenance procedures, be positive that. Configuration manual, 1ph7 induction motors for machine tools. Maintenance safe maintenance practices performed by qualified personnel are imperative. Maintenance instructions for three phase induction motors frames 143t 449t 18060 109 ave edmonton, ab t5s 2k2 phone. Induction motors installation operation generators. These motors experience different types of failures and faults associated with insulation. Free download induction motor seminar ppt, pdf report. 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. A wellplanned preventive maintenance program is the key to dependable, longlife operation of motors and generators. In modern plant operations, unscheduled stoppage of production or long repair shutdowns are intolerable. Maintenance and troubleshooting three phase induction motor. Pdf predictive maintenance by electrical signature analysis.
A wellplanned electric motor preventive maintenance programme is the key to dependable, longlife operation of electric motors. So the main idea behind motor maintenance is to prevent breakdown rather than repairs them. Installation and maintenance threephase induction motors. In general, the induction motor is cheaper and easier to maintain compared to other alternatives. Perform a visual inspection to assess the general condition of the motor. After removal of shaft clamp, turn shaft by hand to check that it turns freely. Simple steps to electric motor maintenance r baker.
Regular motor maintenance to avoid failure and prolong. Electric motor predictive and preventive maintenance guide. 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. This paper deals with the basic knowledge for technicians to study about the concept of maintenance of induction motor. 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. Some sections may explain explicitly between the three. There must be no vibration, twisting, misalignment etc. Since here we are talking about maintenance of induction motor, and it is of two types. This instruction manual describes and provides instructions for installation, operation and maintenance of induction motors.
Horizontal squirrel cage mediumvoltage induction motor. To provide you, our customers, with necessary technical knowhow in examination, operation and maintenance of tatung. 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. Although management probably realizes the value of a good preventive maintenance pm program, they. These symbols appear in this document whenever it is. The induction motors constitute the major portion of motors in domestic and industrial applications. Including the motors in the maintenance schedule for the driven machine or general plant equipment is usually sufficient. Instructions for the installation, operation and maintenance of elektrim three phase induction brake motors 143t286t frame per nema standards type sgm tefc ip55 a24011.
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. Motor preventive maintenance motor preventive maintenance, especially for small induction motors, is more than just inspecting and maintaining the motor itself. Pdf predictive maintenance by electrical signature. Abb maintenance abb service for motors and generators. 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. Predictive maintenance by electrical signature analysis to. Photographs are required in some cases prior to disassembly of the motor to.
Severeduty enclosed motors can be used in highly corrosive or excessively moist areas. Maintenance of induction motor all about squirrel cage. The ideal motor maintenance program aims at preventing breakdowns rather than repairing them. Regular motor maintenance to avoid failure and prolong its lifespan photo credit. 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. Aug, 2017 the ideal motor maintenance program aims at preventing breakdowns rather than repairing them. Induction motors were invented by nikola tesla in 1888 while he was a college student. Code of practice for installation and maintenance of. However, should the motor require service, this manual includes a section that assists the. General purpose enclosed motors can be used where they are exposed to dirt, moisture, and most outdoor conditions.
Keywords induction motor, maintenance, troubles, remedies introduction smaller loads, such as household appliances an induction or asynchronous. Induction motor theory jerry bednarczyk, pe course content introduction the ac induction motor is well suited to applications requiring constant speed operation. Environment depending on the site conditions it may be necessary to create a suitable stores area to hold the motor prior to installation. Motor current signature analysis, condition monitoring, induction motors. Pdf predictive maintenance by electrical signature analysis to. Electric motors are often allowed to run with minimal maintenance until output is down due to a burnout or catastrophic. Additions to the various factors influencing the selection of. 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.
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. The failure of one or more critical motors could cause lost capacity and excessive repair and maintenance cost. Ac induction motors are the most common motors used in industrial motion control systems, as well as in main powered home appliances. Dripproof motors are intended to be used in a wellventilated place reasonably free of dirt and moisture. Spare parts, installation and maintenance of ac motors mammoet. Electric motor predictive and preventive maintenance guide electric motor failure could result in lost capacity as well as excessive repair and maintenance costs. The electric energy generated purchased by consumers for different needs. Manual for induction motors and generators both for safe and hazardous area in brazilian portuguese language. Well designed and manufactured, tatung 3phase induction motors function excellently and have the longest service life expectance. 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. A 3 phase induction motor can be used for different applications with various speed and load requirements. 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. Predictive maintenance by electrical signature analysis to induction motors.
In the first part of our presentation, we are going to discuss. Various types of ac induction motors are available in the market. Search weginstallationoperationand maintenance of threephaseeletric motors forexplosiveatmospheres50000703manualenglish. 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. Spare parts, installation and maintenance of ac motors. Operating instructions and maintenance manual for low voltage. The frequency of routine service varies widely between applications. Systematic and periodic inspections of motors are necessary to ensure best operating results. Electric motor predictive and preventive maintenance guide abstract electric motor performance is vital to the reliable and efficient operation of power plants. This guide provides information on establishing an effective maintenance program to help prevent unexpected motor failures, costly downtime, and unnecessary maintenance costs. Installation, operation and maintenance manual of electric motors this manual provides information about weg induction motors. Main motor windings and all accessory devices associated with the work area are disconnected from. Three phase induction motors maintenance manual thank you very much for your kind patronage.
Generally speaking, motors and motor parts should be maintained and tested at least every 6 months. Nov 18, 2015 repair and refurbishment of ac induction motors the repair and refurbishment of an ac induction motor should include the following steps. 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 motors described in this manual are subject to continuous improvement and all information is subject to change without notice. However, existing maintenance recommendations proposed by. Electric motors for explosive atmospheres instructions manual for installation, operation and maintenance of electric motors date. 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. Preventative and predictive maintenance programs for motors are effective practices. 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.
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. Do not lift both the motor and driven equipment with the motor lifting means. The induction motor is made up of the stator, or stationary windings, and the rotor. Induction motor seminar ppt, pdf report study mafia. If left running under rated conditions, an induction motor will provide many years of troublefree service and may even outlast the building. If motor is to be reshipped alone or installed to another piece of equipment the. Spare parts, installation and maintenance of ac electric induction motors. Warranty see your sales contract for warranty coverage. Installation and maintenance threephase induction motors 5 4850 en 2019. In addition induction motor types, main parts were discussed. Repair and refurbishment of ac induction motors the repair and refurbishment of an ac induction motor should include the following steps. This ensures electrical equipment is kept in good working condition at all times.
Operating instructions and maintenance manual for low. Also the foundation of pump a foundation of motorpump must be rigid and secure to provide adequate support. Your brook crompton motor is designed for long life, and. In the present day, induction motors consume between 90 to 95 percent of the motor energy used in industry. Motors need maintenance regularly in order to avoid failure and prolong their lifespan. Pdf an application of msca on predictive maintenance of. The squirrel cage induction motor was designed for an extended service life under very demanding conditions.
Maintenance manual for low voltage ac induction motors operating instructions and motors for the long run. They should be brought to the attention of all persons who install, operate or maintain this. Italian, russian, english, dutch, simplified chinese, german, french, spanish, brazilian portuguese size. The high cost of the resultant downtime eats deeply into profits. Generally, it is known as the asynchronous motor because its running speed is less than its synchronous speed.
These instructions do not support to cover all details or variations in equipment nor to provide for every possible contingency to be met in. Electrical signature analysis, predictive maintenance. Many sections are mainly applicable to the lvmv induction motor equipment and many others are applicable to either synchronous or dc 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. Maintenance as the name suggests it is the action necessary for retaining or restoring a piece of equipment or machine to the specified.
The magnetic field on the rotor is either generated by current delivered through slip rings or by a permanent magnet. Induction motors installation operation generators maintenance. Documentation of storage maintenance, alignment and regreasing may be required for certain warranty considerations. Maintenance of induction motors second revision 1 scope 1.
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