1、 Comments, suggestions, or questions on this document should be addressed to U.S. Army Tank-automotive and Armaments Command, ATTN: RDTA-EN/STND/TRANS MS#268, 6501 E. 11 Mile Road, Warren, MI 48397-5000 or emailed to DAMI_STANDARDIZATIONconus.army.mil. Since contact information can change, you may w
2、ant to verify the currency of this address information using the ASSIST Online database at http:/assist.daps.dla.mil. AMSC N/A FSC 2920 INCH-POUND MIL-PRF-62061D 14 August 2009 SUPERSEDING MIL-PRF-62061C 20 December 1997 PERFORMANCE SPECIFICATION GENERATOR, ENGINE ACCESSORY: 28 VOLT DC, RATED OUTPUT
3、 300 AMPERE This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers a 28 volt (V) direct current (dc), blower-cooled generator with rated output of 300 amperes (A) (see 6.1). 1.2 Classification. The generators
4、 are classified based on differences in their configurations as follows: Configuration A - Generator with mechanically driven blower Configuration B - Generator with built in electrically driven blower Configuration C - Generator with mounted electrically driven blower Configuration D - Generator -
5、Air intake Assembly 1.3 Part or Identification Number (PIN). The PIN to be used for generators acquired to this specification are created as follows (see 3.5.6): M62061 - X Type (see 1.2): A - Configuration A B - Configuration B C - Configuration C D - Configuration D Specification number Provided b
6、y IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-62061D 2 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this specification. This section does not include documents cited in other sectio
7、ns of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in sections 3, 4, or 5 of this specification, wh
8、ether or not they are listed. 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the
9、 solicitation or contract. COMMERCIAL ITEM DESCRIPTIONS A-A-50271 - Plates, Identification DEPARTMENT OF DEFENSE STANDARDS MIL-STD-461 - Requirements for the Control of Electromagnetic Interference Characteristics of Subsystems and Equipment (See 4.3) (Copies of these documents are available online
10、at http:/assist.daps.dla.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.2.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications form a part of
11、this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. US ARMY TACOM DRAWINGS 8717421 - Generator, Engine Accessory (interface) 10889713 - Generator, Engine Accessory (interface) 10889998 - Generator, E
12、ngine Accessory (interface) 10914831 - Generator, Engine Accessory (M107) (interface) (Copies of this drawing are available from the U.S. Army Tank-automotive and Armaments Command, ATTN: RDTA-EN/STND/TRANS MS #268, 6501 E. 11 Mile Road, Warren, MI 48397-5000, or email DAMI_STANDARDIZATIONconus.army
13、.mil.) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-62061D 3 2.3 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents ar
14、e those cited in the solicitation or contract. ASTM INTERNATIONAL ASTM B117 - Standard Practice for Operating Salt Spray (Fog) Apparatus (DoD Adopted) ASTM G21 - Standard Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi (DoD Adopted) (Copies of these documents are availa
15、ble from www.astm.org or ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.) 2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this document and the references cited herein, the text of this document ta
16、kes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 First article. When specified (see 6.2), a sample shall be subjected to first article inspection in accordance with 4.1.1. 3.2 Design, mate
17、rials, and manufacturing processes. Unless otherwise specified, the design, materials, and manufacturing process selection shall be the prerogative of the contractor as long as all articles submitted to the government fully meet the operating, interface, ownership and support, and operating environm
18、ent requirements specified. 3.2.1 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent possible, provided that the material meets or exceeds the operational and maintenance requirements, and pr
19、omotes economically advantageous life cycle costs. 3.3 Operating requirements. 3.3.1 Polarity. The generator shall be designed to operate within a negatively grounded electrical circuit (see 4.5.1). 3.3.2 Output. The generator shall meet the performance requirements specified in figure 1 (see 4.5.2)
20、. 3.3.2.1 Output, performance checkpoint (heat stabilized). The generator shall subsequently meet the requirements at the one stabilized performance checkpoint indicated in figure 1 (see 4.5.2.1). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P
21、RF-62061D 4 RPM AMP (min) Comments 1500 0 Cut-in-speed 1625 100 1750 200 1900 300 Min. speed at rated output 2000 380 Performance checkpoint 2500 425 3000 425 4000 425 5000 425 6000 415 8000 360 Max. operating speed 10000 - Overspeed NOTE: Generator performance requirements shown above shall be obta
22、ined when generator is assembled and tested with blower and adapter. FIGURE 1. Performance curve. 1000 2000 3000 4000 5000 6000 7000 8000 900060050040030020010000P E R F OR M AN C EI N T H I S A R E AN OT AC C E PT AB L EG E N E R A T O R SP E E D - R P MGENERATOROUTPUT-AMPERESProvided by IHSNot for
23、 ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-62061D 5 3.3.2.2 Speeds and current. The generator shall meet the current and voltage requirements at less than the maximum speeds specified below (see 4.5.2.2): a) Cut-in speed at 28.5 0.1 V at 0 A load (maximum spe
24、ed allowable: 1425 rpm) b) Minimum speed at 100 A at 28.5 0.1 V (maximum speed allowable: 1550 rpm) c) Minimum speed at 300 A at 28.5 0.1 V (maximum speed allowable: 1825 rpm) 3.3.3 Interpole voltage. The voltage measured between the paralleling terminal (D) and the negative terminal (E) shall confo
25、rm to limits as specified on figure 2 (see 4.5.3). FIGURE 2. Generator interpole voltage drop at 390 amp load vs generator cooling air temperature. 3.3.4 Compounding. The field current shall always increase when the load is increased (see 4.5.4). 3.3.5 Insulation resistance. The generator shall have
26、 a resistance of not less than 25 megohms, conductor to conductor and conductor to ground (see 4.5.5). 0 65 70 75 80 85 90 95 100 10501 .8 01 .8 51 .9 01 .9 52 .0 02 .0 52 .1 02 .1 5U P P ER A N D L OW ER LIM ITS O FIN TER P O LE D R O P W ITH GE NE R AT OR LO A D O F 3 9 0 AM P S .G EN ER A TO R C
27、OO LIN G AIR T EM P E R AT URE - oFINTERPOLE VOLTSProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-62061D 6 3.3.6 Ripple. The generator shall meet the following requirements: a) Fault free and battery only conditions - The upper and lower peak
28、s of ripple voltage shall each be less than 2 V. The frequency components of the ripple shall be within the range of 50 Hertz (Hz) to 200 kilohertz (kHz). b) Single fault condition (vehicle system operates with generator only, i.e., no battery) - The upper and lower peaks of ripple voltage shall eac
29、h be less than 7 V. The frequency components of the ripple shall be within the range of 50 Hz to 200 kHz. 3.3.7 Generator flexible drive. 3.3.7.1 Torsional vibration, 100 hours. The flexible drive shall limit the armature amplitude to within plus or minus () 5 degrees () in torsional vibration (see
30、4.5.7.1). 3.3.7.2 Torsional vibration, 15 minutes. The flexible drive shall limit the armature amplitude to within 7 in torsional vibration (see 4.7.5.2). 3.4 Interface requirements. 3.4.1 Design interface. Generator assemblies shall conform to the envelope and mounting dimensions, the electrical an
31、d mechanical interfaces, and conform to the applicable configuration specified below (see 1.2 and 4.6.1). Configuration A - Generator with mechanically driven blower (Drawing 8717421 (interface) Configuration B - Generator with built in electrically driven blower (Drawing 10889713 (interface) Config
32、uration C - Generator with mounted electrically driven blower (Drawing 10889998 (interface) Configuration D - Generator - Air intake Assembly (Drawing 10914831 (interface) 3.4.2 Interchangeability. All generator assemblies and all component parts shall be physically and functionally interchangeable
33、with all other component parts of same part number previously furnished under this specification (see 4.6.2). 3.4.3 Electromagnetic compatibility. 3.4.3.1 Conducted emissions. Conducted emissions shall not exceed the values given in CE102 of MIL-STD-461 (see 4.6.3). 3.4.3.2 Radiated emissions. Elect
34、ric field emissions shall not be radiated in excess of the limits for Army ground applications in RE102 of MIL-STD-461 (see 4.6.3). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-62061D 7 3.5 Ownership and support requirements. 3.5.1 Enduran
35、ce. The generator shall deliver sequentially, as shown, output for 1000 hours. During this time, it shall require no servicing or replacement of parts. The generator shall subsequently meet the requirements of 3.3.2.1 (see 4.7.1). 3.5.2 Overspeed. The generator shall evidence no thrown solder, throw
36、n impregnating compound, damaged insulation, raised armature windings, raised commutator bars or other damage. The generator shall subsequently meet the requirements of 3.3.2.1 (see 4.7.2). 3.5.3 Dielectric strength. The insulation shall evidence no loosening, cracking, charring, burning, smoking or
37、 reduction of dielectric strength (see 4.7.3). 3.5.4 Surface finish. All exterior surfaces of the generator assembly shall be black in color except the electrical connections, terminal box, and the extended shaft. No paint shall be applied to mating surfaces on the frame or on the ends of the genera
38、tor (see 4.7.4). 3.5.5 Safety 3.5.5.1 Asbestos, cadmium and hexavalent chromium. The generator shall not produce any hazards to personnel or the environment resulting from the use of asbestos or cadmium. Hexavalent chromium electroplating, coatings and finishes shall not be used (see 4.7.5.1). 3.5.5
39、.2 Electrical connectors. The generator shall be free of rust, burrs, and scratches. The connections shall have maximum bond from the soldering and/or brazing to the connectors for resilience to vibration and shock to the generator (see 4.7.5.2). 3.5.6 Identification and marking. A nameplate shall b
40、e affixed to the exterior of the generator frame in a location as specified on applicable drawings (see 3.4.1). Nameplates shall conform to the non-dimensional requirements of A-A-50271 and shall include the following minimum information (see 4.7.6): a) Generator, 28 Vdc b) 300 Amperes c) Part or Id
41、entification number (see 6.6) d) National stock number e) Manufacturers identification f) Manufacturers serial number 3.6 Operating environmental requirements. 3.6.1 High temperature. The generator frame temperature shall not exceed 320 degrees Fahrenheit (F). The generator shall evidence no thrown
42、solder, thrown impregnating compound, damaged insulation, raised armature windings, raised commutator bars or other damage. The generator shall subsequently meet the requirements of 3.3.2.1 (see 4.8.1). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,
43、-MIL-PRF-62061D 8 3.6.2 Low temperature. The generator shall evidence no thrown solder, thrown impregnating compound, damaged insulation, raised armature windings, raised commutator bars or other damage. The generator shall subsequently meet the requirements of 3.3.2.1 (see 4.8.2). 3.6.3 Shock resis
44、tance. The generator shall meet the requirements of 3.3.2.1 when subjected to shock pulses encountered from vehicle operations (see 4.8.3). 3.6.4 Vibration resistance. The generator shall meet the requirements of 3.3.2.1 when subjected to wave form vibration encountered from vehicle operations (see
45、4.8.4). 3.6.5 Fungus resistance. Unsealed assemblies and sealed assemblies normally disassembled for servicing shall be resistant to the growth of fungus during its operational lifespan (see 4.8.5). 3.6.6 Corrosion resistance. The generator shall meet the requirements of 3.3.2.1 when subjected to pr
46、olonged exposure to a corrosive environment when in operation (see 4.8.6). 3.6.7 Sand and dust. The generator shall meet the requirements of 3.3.2.1 when subjected to sand and dust when in operation (see 4.8.7). 4. VERIFICATION 4.1 Classification of inspections. The inspection requirements specified
47、 herein are classified as follows: a) First article inspection (see 4.1.1) b) Conformance inspection (see 4.1.2) 4.1.1 First article inspection. Unless otherwise specified (see 6.2), first article inspection shall be performed on preproduction or initial production samples as specified when a first
48、article sample is required (see 3.1). When a first article inspection is required (see 6.2 and 6.3), it shall include all verifications as specified in table I. 4.1.2 Conformance inspection. Conformance inspection shall include the examinations and tests as specified listed in table I (see 6.2 and 6
49、.4). 4.2 Verification methods. Acceptable verification methods included in this section are visual inspections, measurement, sample tests, full scale demonstration tests, simulation, modeling, engineering evaluation, component properties analysis, and similarity to previously approved or previously qualified designs. 4.3 Verification alternatives. The manufacturer may
