1、Designation: F 2361 03An American National StandardStandard Guide forOrdering Low Voltage (1000 VAC or Less) AlternatingCurrent Electric Motors for Shipboard ServiceUp to andIncluding Motors of 500 Horsepower1This standard is issued under the fixed designation F 2361; the number immediately followin
2、g the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This guide covers t
3、he required basic ordering informa-tion for low voltage (1000 VAC or less) general-purpose,commercial, universal, small and medium sized alternatingcurrent electric motors for shipboard use, up to and includingmotors of 500 hp.1.2 The electric motors covered by this guide are general-purpose (GP) mo
4、tors intended to drive common shipboardmechanical machinery such as fans, blowers, centrifugal andscrew pumps.1.3 This guide is not intended to be used to order special-purpose (SP) motors or definite-purpose motors (for example,cryogenic service) or motors for use in hazardous (classified)locations
5、 as defined by the National Electrical Code (NFPA70).1.4 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility o
6、f regulatory requirements prior to use.2. Referenced Documents2.1 Canadian Standards Association (CSA):2CSA Standard C390-93C Energy Efficiency Test Methodsfor Three-Phase Induction Motors General InstructionNo.12.2 Institute of Electrical and Electronic Engineers(IEEE):3IEEE Standard 45 Recommended
7、 Practice for ElectricalInstallations on ShipboardIEEE Standard 112 Standard TestProcedure forPolyphase Induction Motors and Generators2.3 National Electrical Manufacturers Association (NEMA)Standard:4NEMA Standard MG-l Motors and Generators2.4 National Fire Protection Association (NFPA):5NFPA 70 Na
8、tional Electrical Code3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 closed-coupleda special design where the motorfeatures a face mounting flange that the pump casing mountsto, and a motor shaft extension on which the pump impeller ismounted.3.1.2 dripproofa machine enclosur
9、e that allows the motorto be cooled by ambient air having ventilation openings thatallow operation when drops of liquid or solid particles strikethe enclosure at any angle from zero to 15.3.1.3 drive methodthe method of driving the equipment,such as direct, belt, gearbox, or chain.3.1.4 effciency cl
10、assesstandard efficiency classes estab-lished by NEMA based on motor performance.3.1.5 end shielda machined flange or base which haverabbets and bolt holes for mounting equipment to the motor orfor overhanging the motor on a driven machine.3.1.6 frame sizestandard sizes established by NEMAbased on m
11、otor power and speed.3.1.7 mounting arrangementthe installed operating posi-tion of the motor, such as horizontal, vertical shaft up, orvertical shaft down.3.1.8 multi-speeda motor that can operate at more thanone speed, typically at two or three speeds.3.1.9 NEMA design classesdesign classification
12、s desig-nated by NEMA (See NEMA Standard MG-1) for motors thatprovides information to the end user on characteristics such asmotor starting, torque, voltage, and so forth.1This guide is under the jurisdiction of ASTM Committee F25 on Ships andMarine Technology and is the direct responsibility of Sub
13、committee F25.10 onElectrical.Current edition approved Dec. 1, 2003. Published December 2003.2Available from Canadian Standards Association (CSA), 178 Rexdale Blvd.,Toronto, ON Canada M9W1R3.3Available from Institute of Electrical and Electronics Engineers, Inc. (IEEE),445 Hoes Ln., P.O. Box 1331, P
14、iscataway, NJ 08854-13314Available from National Electrical Manufacturers Association (NEMA), 1300N. 17th St., Suite 1847, Rosslyn, VA 22209.5Available from National Fire Protection Association (NFPA), 1 BatterymarchPark, Quincy, MA 02269-9101.1Copyright ASTM International, 100 Barr Harbor Drive, PO
15、 Box C700, West Conshohocken, PA 19428-2959, United States.3.1.10 NEMA insulation classesNEMA system that clas-sifies motor insulation systems by their ability to withstand aspecified temperature for a specified length of time withminimum deterioration.3.1.11 polyphase medium motorsmotors which have
16、windings so arranged to accept to polyphase voltage sources.3.1.12 service factorservice factor for an ac motor is amultiplier, which when applied to the rated horsepower,indicates a permissible horsepower loading which may becarried under the conditions specified for the service factor.3.1.13 singl
17、e-phase fractional horsepower motorsmotorswith ratings up to 1 hp which use single-phase power.3.1.14 single-phase integral horsepower motorsmotorswith ratings of 1 hp up to and including 10 hp, which normallyuse single-phase power but at the upper end of their specifiedrange may also utilize polyph
18、ase power.3.1.15 slipthe difference between synchronous speed andfull load speed. Normal slip is less than 5 %.3.1.16 speedthe number of revolutions per minute (r/min)at which an induction motor operates, which is dependent uponthe input power, frequency, and the number of magnetic polesin the machi
19、ne.3.1.17 temperature, ambientthe temperature of the airsurrounding the machine.3.1.18 temperature risethe difference between the hotspot temperature and the ambient temperature times a constant(see NEMA MG-1).3.1.19 totally-enclosed air over (TEAO)an enclosuresimilar to a TEFC except the cooling ai
20、r is provided by a fanthat is not part of the motor.3.1.20 totally-enclosed fan-cooled (TEFC)a totally-enclosed machine equipped for exterior cooling by means of afan or fans integral with the machine but external to theenclosed parts.3.1.21 totally-enclosed non-ventilated (TENV)a machineenclosed to
21、 prevent the free exchange of air between the insideand outside of the case, but not sufficiently enclosed to beairtight.3.1.22 totally-enclosed water-air cooled (TEWAC)atotally-enclosed machine with integral water-to-air heat ex-changer and internal fans to provide closed-loop cooling of thewinding
22、s.3.1.23 universal motorstypically small motors, which canoperate on ac or dc current, or both.3.1.24 variable speed drive (VSD)a method used to per-mit an operator to vary the speed of a motor.3.1.25 weather protecteda machine with ventilating pas-sages so constructed as to minimize the entrance of
23、 rain, snowand airborne particles to the electrical components.4. General Requirements for Electric Motor Ordering4.1 Electric Motor Ordering Requirements:4.1.1 With each electric motor ordered for marine service,provide the following, to the greatest extent practicable:4.1.1.1 Electrical InputVolta
24、ge, phases and frequency.4.1.1.2 Speed (Synchronous or Full Load)r/min.4.1.1.3 PowerThe horsepower of the motor must bestated as a standard NEMA rating. At a minimum, consider-ation should be given to the needed starting torque, capabilityto accelerate the load to full running speed and maximumoverl
25、oad.4.1.1.4 EnclosureSelect in accordance with IEEE Stan-dard 45. DP or TEFC are normally specified for below deckapplications and WP for above deck applications.4.1.1.5 Duty CycleContinuous duty is normally specifiedsince it demands operation at an essentially constant load for anindefinitely long
26、time. If intermittent or varying duty cycles arerequired, special motor selection criteria will apply.4.1.1.6 Ambient TemperatureStandard motors are de-signed for 400C ambient. If a higher ambient is required, thiswill reduce the service factor or reduce the motor rating thusrequiring a larger size
27、motor.4.1.1.7 Insulation Class.4.1.1.8 Design ClassNEMA designated design class.4.1.1.9 Service Factor (SF).4.1.1.10 Drive Method.4.1.1.11 Mounting ArrangementIf vertical, specify withor without feet.4.1.1.12 Mounting Flange (End Shield):(1) C-face(2) D-flange(3) P-base4.1.1.13 RotationThe rotation
28、of the motor must be speci-fied as clockwise, counter-clockwise or reversible.4.1.1.14 Conduit Box LocationView from the non-shaftend of the motor:(1) Right (standard)F1(2) LeftF24.1.1.15 Closed-coupledSpecify when the motor willmount the pump on a flange and the motor shaft mounts thepump impeller.
29、4.1.1.16 EffciencyIf compliance with the Energy PolicyAct of 1992 is necessary, it should be stated that motors shallbe furnished with a nominal efficiency as defined in Table12-10, NEMA MG-1.4.1.1.17 Special RequirementsThis shall include, but notbe limited to, space heaters, temperature protection
30、, additionalTABLE 1 Sample Electric Motor Ordering ChecklistDesign Parameter Unit, Value, OtherElectrical Input Voltage, Phase, FrequencySpeed r/min (single speed, two speed, VSD)PowerEnclosure Type per NEMA MG-1Duty Cycles Continuous or OtherAmbient Temperature CInsulation Class per NEMA MG-1Design
31、 Class per NEMA MG-1Service Factor 1.0 or OtherDrive Method SpecifyMounting Arrangement SpecifyMounting Flange (end shield) Yes or NoRotation CW, CCW, ReversibleMotor conduit box Location F1, F2Closed-Coupled Yes or NoEfficiency Standard, High, PremiumSpecial Requirements SpecifyOther Standards Spec
32、ifyF2361032regulatory or classification society requirements. Specificspecification sections and paragraphs must be cited.4.2 Other Requirements:4.2.1 Marine ServiceEach motor specified for installationon board ship shall as a minimum comply with the require-ments of IEEE Standard 45.4.2.2 General T
33、estingUnless otherwise stated, all motorsshall be tested in accordance with the requirements of IEEEStandard 112.4.3 Electric Motor Ordering Checklist:4.3.1 It is recommended that the minimum informationshown in Table 1 be provided to the supplier when ordering anelectric motor for marine service.5.
34、 Keywords5.1 general purpose motors; multi-speed motors; polyphasemotorsASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of
35、 any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments ar
36、e invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not rec
37、eived a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).F2361033
