1、INCH-POUNDA-A-5939724 January 2000 SUPERSEDINGMIL-W-80037C7 August 1980Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any otherdata which may improve this document should be sent to: Defense Supply Center Richmond(DSCR), ATTN: DSCR-VBD, 8000 Jefferson Davis High
2、way, Richmond, VA 23297-5610.AMSC N/A FSC 3431DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.COMMERCIAL ITEM DESCRIPTIONWELDING MACHINES, ARC, DC, GENERATOR, CONSTANT CURRENT,INTERNAL COMBUSTION ENGINE DRIVENThe General Services Administration has authorized the use
3、 of thiscommercial item description as a replacement for MIL-W-80037Cfor all federal agencies.1. SCOPE. This commercial item description (CID) establishes the government acquisitionrequirements for DC generator arc welding machines driven by internal combustion engines tobe used for portable arc wel
4、ding applications.2. CLASSIFICATION. The welding machines shall be classified according to the types andsizes specified in table I. The type and size of machine to be furnished shall be specified in theacquisition order (see 7.5(b).TABLE I. Arc welding machine classifications.Drive Power Cooling Typ
5、e Size Rating (Amperes)Minimum 100%duty cycleGasoline engine Air I 200 200Liquid II 300 300350 350Diesel engine Liquid III 300 300350 350Air IV 250 250400 400600 600Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-5939723. SALIENT CHARACTERISTICS3
6、.1 Components. The arc welding machine shall consist of an internal combustion engine, a DCelectrical power generator capable of delivering constant direct current at levels suitable for arcwelding, a frame, an enclosure, output terminals, and operating controls.3.1.1 Unless otherwise specified (see
7、 7.5(c), the welding machine frame shall include amounting structure which is arranged and pre-drilled for bolting the machine to a baseplate, skid,or trailer.3.1.2 The machine frame shall include a lifting eye at the normal center of balance at the top ofthe machine. The lifting eye shall be capabl
8、e of supporting two and one-half times the weight ofthe machine and shall be mounted so that either base-mounted or skid-mounted machines willretain alignment during lifting operations.3.2 Performance. The output rating and performance capabilities of each machine shall complywith the Class I requir
9、ements of National Electrical Manufacturers Association (NEMA)Standard EW-1, “Electric Arc Welding Power Sources“. Each machine shall be rated for a 100percent duty cycle.3.2.1 The welding machine open circuit voltage shall meet the requirements of NEMA EW-1.3.2.2 The operating temperature limits of
10、 the welding machine generator and of all machineparts subject to damage by excessive temperature shall meet the requirements of NEMA EW-1.3.3 Engine. The arc welding machine prime power source shall be a standard internalcombustion engine of current commercial design and with sufficient horsepower
11、to operate thewelding power source at its maximum rated load and duty cycle.3.3.1 Type I and II engines shall be 4-cycle gasoline engines designed to run on either leaded orunleaded gasoline with an octane rating of at least 83.3.3.2 Type III and IV engines shall be either 2-cycle or 4-cycle diesel
12、engines designed to run onNo. 2 grade diesel fuel.3.3.3 The arc welding machines shall contain a 12-volt electrical starting system with anautomatic battery recharging capability. When specified, Type I machines may contain amanually operated starting mechanism rather than an electrical starting sys
13、tem.3.3.4 Type II, III, and IV engines shall be equipped with a low oil pressure shutdown device.3.3.5 The welding machine fuel storage capacity when the engine is operated at maximum loadand at rated duty cycle shall be sufficient to operate Type I machines for at least three hours,Type II machines
14、 for at least six hours, and Type III and IV machines for at least eight hours.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-5939733.4 Output power source. The welding machine electrical power source shall meet therequirements of NEMA EW-1 and
15、shall produce constant-current, self-regulating output powerwith a drooping volt-ampere characteristic.3.4.1 Type II, III, and IV welding machines shall be provided with a switch to reverse thepolarity of the welding current.3.4.2 The welding current output shall be manually regulated in two steps.
16、A coarse controlshall select convenient output current increments through the entire range of the machine. A finecontrol shall then provide stepless adjustments within the range of each selected increment.3.4.3 The machine shall contain an auxiliary power system meeting the requirements ofNEMA EW-1.
17、 The auxiliary system shall include a 115-volt AC duplex receptacle circuit forlights and power tools. When specified, a 230-volt AC circuit with a designated kilowattcapacity shall also be provided (see 7.5(d). Auxiliary circuits shall include automatic overloadprotection devices.3.5 Cables. The we
18、lding cables and electrode holders shall be as specified in the contract(see 7.5(e).3.6 Nameplate. A nameplate conforming to the requirements of NEMA EW-1 shall be securelyattached to the machine. Unless otherwise specified (7.5(f), the nameplate shall display thefollowing information:a. Nomenclatur
19、eb. Manufacturers type designation and/or identification numberc. NEMA EW-1d. Maximum open circuit voltagee. Rated load voltsf. Rated load amperesg. Duty cycle at rated loadh. Maximum rated speed of generator in rpm at no loadi. Related frequency of power supplyj. Number of phases of power supplyk.
20、Rated input voltage of power supplyl. National stock number (if specified)m. Contract or order number (if specified)n. Date of manufacture (if specified)3.7 Trailer. When specified (see 7.5(g), the welding machine shall be mounted on an over theroad trailer. The trailer shall be capable of maintaini
21、ng speeds of up to 50 mph on improvedroads and 10 mph over rough terrain.3.8 Accessories. All accessories and optional equipment shall be as specified in the contract(see 7.5(h).Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-5939744. REGULATORY
22、REQUIREMENTS4.1 Recovered materials. The offeror/contractor is encouraged to use recovered materials to themaximum extent practicable, in accordance with paragraph 23.403 of the Federal AcquisitionRegulation (FAR).5. QUALITY ASSURANCE PROVISIONS5.1 Product conformance. The engine-driven arc welding
23、machines provided shall meet thesalient characteristics of this commercial item description; conform to the producers owndrawings, specifications, standards, and quality assurance practices; and have been also offeredfor sale in the commercial market. The government reserves the right to require pro
24、of of suchconformance.5.2 Market acceptability. The product offered must have been previously sold either to thegovernment or on the commercial market.6. PACKAGING6.1 Preservation, packing, and marking. For acquisition purposes, the welding machine shall bepreserved, packed, and marked as specified
25、in the procurement contract or order (see 7.5(i).7. NOTES7.1 Part identification number (PIN). The following part identification numbering procedure isfor government purposes and does not constitute a requirement for the contractor.7.2 Sources of documents.7.2.1 FAR. The FAR may be obtained form the
26、 Superintendent of Documents, U. S.Government Printing Office, Washington, DC 20402-0001.7.2.2 NEMA EW-1. Copies of NEMA Standard EW-1 may be obtained from the NationalElectrical Manufacturers Association, 1300 North 17th Street, Suite 1847, Rosslyn, VA 22209.CID numberAA59397 X XXXSize: (see Table
27、I)Type: A - Type I Air-cooled gasoline engine drivenB - Type II Liquid cooled gasoline engine drivenC - Type III Liquid cooled diesel engine drivenD - Type IV Air-cooled diesel engine drivenProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-5939757.
28、3 National stock numbers (NSNs). The NSNs listed below are assigned for the arc weldingmachine types and sizes specified in this CID. Other NSNs may also apply to this document.Type Size Assigned NSNIII 300 3431-00-708-7625III 300 3431-00-846-96367.4 Sources of supply. The manufacturers and/or suppl
29、iers listed below are known to supply arcwelding machines that meet the salient characteristics requirements of this CID. Competition isnot limited to the listed firms.L-TEC Welding and Cutting SystemsFlorence, South Carolina 29501Miller Electric Manufacturing CompanyAppleton, Wisconsin 54914Teledyn
30、e McKayYork, Pennsylvania 17405Thermadyne Industries, IncorporatedTroy, Ohio 453737.5 Ordering data. Acquisition documents must specify the following:a. Title, number, and date of this documentb. Classification (type and size) of arc welding machine (see table I)c. Frame mounting structure, if diffe
31、rent (see 3.1.1)d. Auxiliary power requirements (see 3.4.3)e. Welding cables (see 3.5)f. Nameplate, if different (see 3.6)g. Trailer, if required (see 3.7)h. Accessories and optional equipment, if required (see 3.8)i. Packaging requirements (see 6.1)MILITARY INTERESTS:CIVIL AGENCYCOORDINATING ACTIVITY:Custodians:Army - AVNavy - YDAir Force - 99GSA - 6FETReviewers:Navy - MC, SHAir Force - 84Preparing activity:DLA - GS(Project 3431-0253)Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
