The standard limits the enclosure to totally enclosed, which is. This paper is a view of motor vibration from the motor perspective covering horizontal ieee 841 motors. The ieee 841 standard also sets out specific guidelines for the construction of the main terminal box, which must be cast iron and gasketed. The motor is built to yield vibration limits below the very strict requirements of the ieee 841 standard, especially at 120 hz levels. The frame, bearing housings, stator and rotor employ technologically advanced designs to surpass the demanding vibration requirements of the ieee standard 8412009. While these specifications are specific to ieee 841 rated motors, many of them are incorporated into severe duty motors for the general market. Ieee 841 identifies the recommended practice for chem. Motor frame designations also are from mg 1, and nema vibration and noise standards are. Electrical and instrumentation ncrs on projects paktechpoint. By defi nition these motors are of all cast iron construction, and include noncontact rotating labyrinth shaft seals. The baldor ieee 841 motor will be found in aboveground mines, cement plants, chemical plants and paper plants. Robust bearing system double row angular contact thrust bearings with l10 rated life at 26,280 hrs low vibration with precision balance that exceeds ieee 841. Offer above and beyond severe duty requirements with hyundai electric ieee841 motors.
Toshibas ieee841 motors are available up to 300 horsepower with 2, 4, or 6 poles, 460 or 575v, and come standard with a. Some additional modifications, however, are usually required to make the ieee 841. Fundamental noise limits for miniature acoustic and. Toshibas eqpglobal 841 motors are designed to specifically address the needs of the petrochemical industry where premium performance and reliability are imperative. Iec standards perform a very important role in enabling international trade of electric equipment. The w50 motors also feature a number of definite purpose versions, developed to meet specific industry and application requirements, whilst maintaining the need to provide the best solution for the customer.
Norwood motor plant mark chisholm siemens industry, inc. Stainless steel nameplate laser etched with high contrast background. The frame, bearing housings, stator and rotor employ technologically advanced designs to surpass the demanding vibration requirements of the ieee standard 841 2009. Ieee 841 identifies the recommended practice for chemical industry severe duty squirrelcage induction motors, 600 v and below. Motor standards for the chemical process industry standard ieee. Standard format for iec standards learning from motor standards for other electric equipment. Apr 15, 2010 siemens says its a completely new motor design for 125 400 hp, 3,600 rpm applications. Leeson three phase severe duty ieee 841 premium electric motors are designed for harsh environments that you may find in refineries, aboveground mines, foundries, paper and pulp mills, cement plants or other severe duty applications requiring a premium efficient motor. It was first issued in 1986 and was significantly revised and reissued as a standard in 1994.
Api 541 5th edition understanding the changes and updates to one of the petroleum industrys premier specifications bart sauer siemens industry, inc. The sd100 ieee841 electric motor from siemens is a lowvibration, nema premium motor for severeduty applications, such as pumps, blowers and fans. Interpretations are issued to explain and clarify the intent of a standard and do not con. Nema motor standards provide foundation for industry nema blog. Exclusive weg painting system exceeds 200hrs astm 117 corrosion test exceeds ieee 841 standard balanced to 0. Delivering full text access to the worlds highest quality technical literature in engineering and technology. This vibration is the result of rotor and stator forces on the bearings acting with in the system.
These types of motors are designed to withstand extreme environmental conditions. Engineered to address the common causes of motor failure. Siemens new lowvibration motor exceeds ieee standards. Various increments of voltage imbalance from 1% up to 10% were tested and monitored on several pole speeds. Vibration readings shall not exceed the levels specified in ieee std 8412009 at all frequencies or. The advantage plus ieee 841 motors are engineered to operate many types of machinery in diverse industrial environments. Siemens says its a completely new motor design for 125 400 hp, 3,600 rpm applications. Four bolt conduit cover with glued neoprene gasket. Esr motor systems, llc rock hill, south carolina 29730 phone. What is the advantage, and is there evidence that it contributes significantly to motor life. Exclusive weg painting system exceed 200hrs astm 117 corrosion test exceeds ieee 841 standard balanced to 0. Unbalance vibration at ix rotational speed, vibration due to magnetic forces.
When comparing an ieee 841 to a standard tefc motor it typically. When that life is expended, the bearing fails unexpectedly. Automatic grease relief fitting on both ends of motor foot pad planity within 0. The unfiltered vibration limits for resiliently mounted standard machines having no special vibration requirements, based on rotational speed, are shown in the table on page 5 unfiltered vibration limits. The only point i can really see, andor make judgment on, would be to ask if this motor would be interchangeable with a proper nema mg 1 dimensioned motor of the same frame, i. This offers a more reliable motor to users in process industries oil and gas, petrochemical, paper, utilities.
Ieee standards interpretation for ieee std 8411994 ieee. The section on costs considers the cost of motor vibration in. Grease inlet fittings and reliefs on both ends of motor make lubrication maintenance easy. Product brochure nema supere premium efficient motors. Ieee841 identifies the recommended practice for chemical industry severe. If an existing motor is being replaced it would have been supplied with a manufacters nameplate offering all the details about the original motor necessary for offering a replacement. Conduits routed across areas restricting access and egress and creating tripping hazards. These weg ieee 841 w22 nema premium efficiency mill and chemical duty motors are specially suited for pulp and paper mills, petrochemical, steel mills and applications requiring severe duty long life motors. Petrochemical ac induction motor standards ieee 841, api.
Com 3 the motor insulation system will be suitable for use with oil mist lubrication systems. Customary units, relative to bearing housing using noncontact vibration probes for all hydrodynamic sleeve bearing machines with the. Ieee std 1122004, ieee standard test procedure for polyphase. The scope has been increased to severe duty tefc squirrelcage induc. We also have the expertise to diagnose the mechanical and electrical requirements for special applications and custom engineer designs as they warrant. Ieee std 1122004, ieee standard test procedure for. Easa mechanical reference handbook evans enterprises. Vibration in an installed motor system can be caused by numerous variables. The footing works for nearly any retrofit and a broad selection of options makes custom orders a thing of the past, allowing for optimal performance in diverse operating conditions. Users recognized that bearing failures were the lead. Our line of 841xl motors are designed to meet and exceed the requirements of ieee std.
Premium efficiency motor selection and application guide i acknowledgments the premium efficiency motor selection and application guide and its companion publication, continuous energy improvement in motordriven systems, have been developed by the u. Standard format for iec standards learning from motor. Designed for use in severely corrosive environments cast iron frame, end shields and fan cover improve rigidity and reduce vibration limited to. Saesb054 requires that all means of access and egress be unobstructed. There are two major causes of vibration in ieee 841 motor. Advantage plus ieee 841 tecowestinghouse motors canada inc. When compared to older standard tefc industrial motors, ieee 841 motors are more effi cient nema premium, lower temperature rise, low in sound power, and lower in vibration. Customary units for sleeve and antifriction bearing machines with the machine securely fastened to a massive foundation. Ieee standards interpretation for ieee std 8411994 ieee standard for the.
There is considerable debate as to precisely how some elements of ieee std 5191992 should be interpreted. Coated to prevent corrosion 841xl motors are guaranteed to meet ieee std. Toshibas ieee 841 motors are available up to 300 horsepower with 2, 4, or 6 poles, 460 or 575v, and come standard with a 5 year warranty. Toshibas eqpglobal841 motors are designed to specifically address the needs of the petrochemical industry where premium performance and reliability are imperative. Ieee 841 motor vibration ieee conference publication. Description wegs w22 nema premium motors meet or exceed all nema premium requirements for energy efficiency. Search wegieeestd8412009nemapremiumefficiencymotorswith inproseal usaieee841brochureenglish. Exclusively distributed by worldwide electric, these motors include added features like. Search weg ieee std 841 2009nemapremiumefficiencymotorswith inproseal usaieee841brochureenglish. The simotics sd200 low voltage motor from siemens combines flexibility, performance and efficiency to meet any customer need. Nema super e premium efficient motors motors and generators abb 3 nema super e premium efficient motors totally enclosed fan cooled tefc motor design features the family of baldorreliance supere tefc totallyenclosed fancooled motors share a number of electrical and mechanical features that add up to outstanding value. While nema clearly defi ned and standardized motor ratings and performance, there was no consistent defi nition for motors used in the most severe environments.
Ieee std 1122004 revision of ieee std 1121996 112tm ieee standard test procedure for polyphase induction motors and generators 3 park avenue, new york, ny 100165997, usa. Ieee25036449ts ieee841 rigid base worldwide electric. Shaft limit on shaft runout reduced vibration all cast iron construction structural integrity, corrosion resistance and frames, endshields longer life. Mg 11998, 7 for special machines and ieee 841 are recommended. This paper will present actual test data collected along with a discussion on how these. Use with adjustable speed drives ieee 841 2001 allows for the motor to be operated from an adjustable speed drive asd as an unusual service condition. Petrochemical ac induction motor standards a comparison between ieee 841, api 541 and api 547 3. Petrochemical ac induction motor standards ieee 841, api 541. Petrochemical ac induction motor standards a comparison between ieee 841, api 541 and api 547 4 iv. This introduction is not part of ieee std 1122004, ieee standard test procedure for polyphase induction motors and generators. As the sensitivity is increased or the size is decreased, a sensor becomes more susceptible to. A standard that works for many years industrial motor users struggled with properly specifying motors for their most severe applications.
Ieee 8412001 allows for the motor to be operated from an adjustable speed drive asd as an unusual service condition. This paper presents the authors views on some of the more ambiguous elements of the standard and on the application of harmonic limits in general. There are many variables to consider when purchasing or replacing electric motors. The application also calls for it to conform to ieee 841 and it is on an inverter drive in a class 1 division 2 groups b,c,d, t3 hazlok. Ieee std 1122004 revision of ieee std 1121996 112tm ieee standard test procedure for polyphase induction motors and generators 3 park avenue, new york, ny 100165997, usa ieee power engineering society. Ieee841 motors available at kj electric 5year manufacturer warranty. Recent technological advances in microfabrication and fiber optics have made practical the construction of very small, sensitive sensors for acoustic or vibration measurements. Department of energy doe office of energy efficiency and renewable energy eere with support from the copper. Esr motor systems, llc electric motors drives gearboxes.
Advantage plus ieee 841 tecowestinghouse motors canada. Search wegieeestd8412009nemapremiumefficiencymotors. Final attempt are made to quantify the cost of motor vibration in terms of equipment life. The user is instructed to contact the motor manufacturer to determine suitability for. The standard limits the enclosure to totally enclosed.