Search weginstallationoperationand maintenance of threephaseeletric motors forexplosiveatmospheres50000703manualenglish. This guide provides information on establishing an effective maintenance program to help prevent unexpected motor failures, costly downtime, and unnecessary maintenance costs. Since here we are talking about maintenance of induction motor, and it is of two types. These motors experience different types of failures and faults associated with insulation. The induction motors constitute the major portion of motors in domestic and industrial applications. Simple and rugged design, lowcost, low maintenance and direct connection to an ac power source are the main advantages of ac induction motors. Installation and maintenance threephase induction motors. Motors need maintenance regularly in order to avoid failure and prolong their lifespan. Configuration manual, 1ph7 induction motors for machine tools. Maintenance of induction motors second revision 1 scope 1. Spare parts, installation and maintenance of ac motors. Including the motors in the maintenance schedule for the driven machine or general plant equipment is usually sufficient. Photographs are required in some cases prior to disassembly of the motor to. The motors described in this manual are subject to continuous improvement and all information is subject to change without notice.
Ac induction motors are the most common motors used in industrial motion control systems, as well as in main powered home appliances. 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. 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.
Environment depending on the site conditions it may be necessary to create a suitable stores area to hold the motor prior to installation. General purpose enclosed motors can be used where they are exposed to dirt, moisture, and most outdoor conditions. Electric motor predictive and preventive maintenance guide. Aug, 2017 the ideal motor maintenance program aims at preventing breakdowns rather than repairing them. After removal of shaft clamp, turn shaft by hand to check that it turns freely. Maintenance as the name suggests it is the action necessary for retaining or restoring a piece of equipment or machine to the specified. Installation and maintenance threephase induction motors 5 4850 en 2019. However, existing maintenance recommendations proposed by. 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 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 of induction motor all about squirrel cage. This checklist incorporates all range of motors equipment.
The ideal motor maintenance program aims at preventing breakdowns rather than repairing them. 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. So the main idea behind motor maintenance is to prevent breakdown rather than repairs them. Electric motor predictive and preventive maintenance guide electric motor failure could result in lost capacity as well as excessive repair and maintenance costs. Electric motors are often allowed to run with minimal maintenance until output is down due to a burnout or catastrophic.
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. Documentation of storage maintenance, alignment and regreasing may be required for certain warranty considerations. Pdf predictive maintenance by electrical signature analysis to. Before starting maintenance procedures, be positive that. Some sections may explain explicitly between the three. In general, the induction motor is cheaper and easier to maintain compared to other alternatives. Well designed and manufactured, tatung 3phase induction motors function excellently and have the longest service life expectance. Manual for induction motors and generators both for safe and hazardous area in brazilian portuguese language.
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. Main motor windings and all accessory devices associated with the work area are disconnected from. Induction motors were invented by nikola tesla in 1888 while he was a college student. A wellplanned electric motor preventive maintenance programme is the key to dependable, longlife operation of electric motors. Predictive maintenance by electrical signature analysis to induction motors. Also the foundation of pump a foundation of motorpump must be rigid and secure to provide adequate support. 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 failure of one or more critical motors could cause lost capacity and excessive repair and maintenance cost. These symbols appear in this document whenever it is. In the present day, induction motors consume between 90 to 95 percent of the motor energy used in industry. Code of practice for installation and maintenance of. Almost all electrical equipment requires planned inspection and maintenance being carrying out. There must be no vibration, twisting, misalignment etc.
Pdf predictive maintenance by electrical signature. Pdf predictive maintenance by electrical signature analysis. Instructions for the installation, operation and maintenance of elektrim three phase induction brake motors 143t286t frame per nema standards type sgm tefc ip55 a24011. Horizontal squirrel cage mediumvoltage induction motor. Operating instructions and maintenance manual for low voltage. They should be brought to the attention of all persons who install, operate or maintain this. However, should the motor require service, this manual includes a section that assists the. Various types of ac induction motors are available in the market. Additions to the various factors influencing the selection of. Induction motor seminar ppt, pdf report study mafia. Induction motor theory jerry bednarczyk, pe course content introduction the ac induction motor is well suited to applications requiring constant speed operation. Maintenance manual for low voltage ac induction motors operating instructions and motors for the long run.
Squirrel cage induction motor requires significantly less maintenance as it does not contain brushes, commutators, slip rings. 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. Maintenance safe maintenance practices performed by qualified personnel are imperative. Repair and refurbishment of ac induction motors the repair and refurbishment of an ac induction motor should include the following steps. This instruction manual describes and provides instructions for installation, operation and maintenance of induction motors. Motor current signature analysis, condition monitoring, induction motors. The squirrel cage induction motor was designed for an extended service life under very demanding conditions. Maintenance instructions for three phase induction motors frames 143t 449t. Generally speaking, motors and motor parts should be maintained and tested at least every 6 months. Free download induction motor seminar ppt, pdf report. Spare parts, installation and maintenance of ac electric induction motors. Search weginstallationoperationandmaintenanceofthree. Electrical signature analysis, predictive maintenance.
Dripproof motors are intended to be used in a wellventilated place reasonably free of dirt and moisture. 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. 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. Operating instructions and maintenance manual for low.
Maintaining induction motors electrical contractor magazine. Perform a visual inspection to assess the general condition of the motor. Your brook crompton motor is designed for long life, and. 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. A wellplanned preventive maintenance program is the key to dependable, longlife operation of motors and generators. Abb maintenance abb service for motors and generators. Preventative and predictive maintenance programs for motors are effective practices. If motor is to be reshipped alone or installed to another piece of equipment the. A 3 phase induction motor can be used for different applications with various speed and load requirements. Simple steps to electric motor maintenance r baker. Systematic and periodic inspections of motors are necessary to ensure best operating results. Check whether any damage has occurred during transportation. Maintenance instructions for three phase induction motors frames 143t 449t 18060 109 ave edmonton, ab t5s 2k2 phone. If left running under rated conditions, an induction motor will provide many years of troublefree service and may even outlast the building.
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. To provide you, our customers, with necessary technical knowhow in examination, operation and maintenance of tatung. The induction motor is made up of the stator, or stationary windings, and the rotor. Pdf an application of msca on predictive maintenance of. Equipment connected to the shaft will not cause mechanical rotation.
Induction motors installation operation generators maintenance. Induction motors installation operation generators. Many sections are mainly applicable to the lvmv induction motor equipment and many others are applicable to either synchronous or dc motors. In the first part of our presentation, we are going to discuss. The high cost of the resultant downtime eats deeply into profits. This paper deals with the basic knowledge for technicians to study about the concept of maintenance of induction motor. 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. Regular motor maintenance to avoid failure and prolong. Electric motors for explosive atmospheres instructions manual for installation, operation and maintenance of electric motors date. These instructions do not support to cover all details or variations in equipment nor to provide for every possible contingency to be met in.
Regular motor maintenance to avoid failure and prolong its lifespan photo credit. The electric energy generated purchased by consumers for different needs. In modern plant operations, unscheduled stoppage of production or long repair shutdowns are intolerable. 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 owner of the motor is responsible for ensuring all required maintenance is performed and properly documented. Generally, it is known as the asynchronous motor because its running speed is less than its synchronous speed. Nov 18, 2015 repair and refurbishment of ac induction motors the repair and refurbishment of an ac induction motor should include the following steps. Maintenance and troubleshooting three phase induction motor. Keywords induction motor, maintenance, troubles, remedies introduction smaller loads, such as household appliances an induction or asynchronous. The magnetic field on the rotor is either generated by current delivered through slip rings or by a permanent magnet. 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.
Includes rib cooled motors, types hxr and nxr, and modular induction motors, frame sizes 400630. Spare parts, installation and maintenance of ac motors mammoet. In addition induction motor types, main parts were discussed. Installation, operation and maintenance manual of electric motors this manual provides information about weg induction motors.
1543 1620 672 713 1411 914 11 1178 1197 1091 301 944 56 1456 1295 1363 1493 977 1500 49 89 1228 1449 104 588 1371 1373 1482 515 749 100 676