1、Comments, suggestions, or questions on this document should be addressed to U.S. Army Tank-automotive and Armaments Command, ATTN: RDTA-EN/DM/STND, 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 wan
2、t to verify the currency of this address information using the ASSIST Online database at http:/assist.daps.dla.mil. AMSC N/A FSC 6115 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. INCH-POUND MIL-DTL-62186C 06 August 2009 SUPERSEDING MIL-DTL-62186B 6 January 1999 D
3、ETAIL SPECIFICATION GENERATOR, ALTERNATING CURRENT (650 AMPERE RECTIFIED), 28 VOLTS DIRECT CURRENT (OIL COOLED) This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification defines the requirements for an alternating curr
4、ent, 650 ampere rectified, 28 volt direct current, oil cooled generator, referred to herein as “alternator,” used in the electrical generating systems of the M60 series tanks (see 6.1). 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3 and 4 of thi
5、s specification. This section does not include documents in other sections 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 requirem
6、ent documents cited in sections 3 and 4 of this specification, whether or not they are listed. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-62186C 2 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following sp
7、ecifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DoDISS) and supplements thereto, cited in th
8、e solicitation (see 6.2). SPECIFICATIONS DEPARTMENT OF DEFENSE MIL-PRF-2104 - Lubricating Oil, Internal Combustion Engine, Combat/Tactical Service. MIL-PRF-21260 - Lubricating Oil, Internal Combustion Engine, Preservative Break-In. MIL-PRF-46167 - Lubricating Oil, Internal Combustion Engine, Arctic.
9、 MIL-DTL-62187 - Regulator, 650 Amp, Solid State. FEDERAL A-A-52557 - Fuel Oil, Diesel, for Posts, Camps, and Stations. STANDARDS DEPARTMENT OF DEFENSE MIL-STD-461 - Requirements for the Control of Electromagnetic Interference Characteristics of Subsystems and Equipment. MIL-STD-810 - Environmental
10、Test Methods and Engineering Guidelines (See 4.3.1). (Unless otherwise indicated, copies of the above specifications, standards, and handbooks are available from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094 or from their website at http:/assis
11、t.daps.dla.mil/online/start/). 2.2.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation. P
12、rovided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-62186C 3 DRAWINGS ARMY 11655426 - Engine and Transmission Assembly. 11655469 - Generator, AC-DC (Oil Cooled). 11682700 - Engine, Diesel. (Copies of the above drawings can be requested by contacti
13、ng the U.S. Army Tank-Automotive and Armaments Command, ATTN: RDTA-EN/STND/TRANS MS #268, Warren, MI 48397-5000 or by email DAMI_STANDARIZATIONconus.army.mil). 2.3 Order of precedence. In the event of a conflict between the text of this document and the references cited herein, the text of this docu
14、ment takes 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 and 6.3), a sample shall be subjected to first article inspection in accordance with 4.1.1. 3
15、.2 Design and construction. Alternators shall be designed and constructed in accordance with Drawing 11655469. 3.3 Materials. Materials shall be in accordance with Drawing 11655469 and 3.3.1 through 3.3.3. Materials not thereby designated shall be suitable for an alternator conforming to the require
16、ments as specified herein. 3.3.1 Material compatibility. All materials used in the alternator shall be compatible with fluids conforming to MIL-PRF-2104, MIL-PRF-21260, MIL-PRF-46167, and A-A-52557. 3.3.2 Dissimilar metals. Except where necessary to complete an electrical circuit, contact between di
17、ssimilar metals which would encourage galvanic corrosion shall be avoided. Separation of dissimilar metals shall be accomplished by providing insulation between mating surfaces. 3.3.3 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally preferable mat
18、erials should be used to the maximum extent possible provided that the material meets or exceeds the operational and maintenance requirements, and promotes economically advantageous life cycle costs. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI
19、L-DTL-62186C 4 3.4 Operating requirements. All alternators shall meet the operating requirements as specified in 3.4.1 through 3.4.14. 3.4.1 Overspeed. The alternator shall withstand 10 000 revolutions per minute (rpm), for at least 1 minute, without sustaining damage. 3.4.2 Maximum field voltage (n
20、onoperating). The alternators field shall withstand an application of 22 volts (V) of direct current (dc) for 30 minutes without sustaining damage. 3.4.3 Field resistance. The alternator control field shall be 1.80 0.25 ohms (). 3.4.4 Output power. With the alternator providing output power at 650 a
21、mperes (A) at 28 Vdc, the field current shall be not greater than 4.25 A at 2400 rpm, and 3.15 A at 8000 rpm. 3.4.5 Ripple voltage. With an output voltage of 28 Vdc, the ripple voltage shall be not greater than 4 V, peak-to-peak. 3.4.6 Overload output current. The alternator shall withstand an outpu
22、t load of 800 25 A at not less than 23 Vdc for 30 seconds without sustaining damage. The field current shall be not greater than 4 A. 3.4.7 Alternating current (ac) signal. With 20 2 Vdc applied to the field terminals, the ac signal level shall be 7.1 0.5 V root mean square (rms) at an alternator sp
23、eed of 900 rpm, and 8.9 0.5 V rms at an alternator speed of 1100 rpm. 3.4.8 Current transformer (CT) signal. The CT signal level shall be 2.8 + 0.2, -0.3 V rms with a 650 A load and at 8000 rpm. 3.4.9 Alternator oil system. The alternator shall be equipped with a self-contained oil pump with a press
24、ure regulator valve. The oil system shall produce a cooling oil flow of not less than 2.35 gallons per minute (gal/min) (0.15 liters per second (L/s), nor greater than 6.0 gal/min (0.38 L/s). The alternator oil pump outlet pressure shall be not greater than the proof pressure. 3.4.10 Transient load.
25、 Transient load requirements shall be in accordance with figure 1. 3.4.11 Efficiency. The efficiency of the alternator shall be not less than 65 percent (%). 3.4.12 Proof pressure. The alternator cooling system shall withstand a 200 pound per square inch (psi) (1379 kilopascals (kPa) pressure for at
26、 least 5 minutes without permanent physical deformation, rupture, or a leakage rate greater than 10 psi drop per minute (psi/min) (69 kPa per minute (kPa/min). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-62186C 5 3.4.13 Torsion. The alter
27、nator shall meet the torsion requirements as specified in 3.4.13.1 through 3.4.13.3. 3.4.13.1 Natural frequency. The natural torsional resonant frequency of the rotor and shafting system shall be between 100 and 140 hertz (Hz). 3.4.13.2 Vibratory torque. The alternator shall withstand a vibratory to
28、rque in accordance with figure 2 for a period producing 12 000 torque reversals, without sustaining damage. 3.4.13.3 Torsional application. The alternator shall withstand operation on an engine-transmission assembly conforming to Drawing 11655426 for 192 hours without sustaining damage, and without
29、degrading the system drive train or compromising engine-transmission assembly performance. 3.4.14 Electromagnetic interference (EMI). The alternators broad-band conducted and radiated emissions shall be not greater than the limits as specified in figures 3 and 4. 3.5 Interface requirements. In addit
30、ion to meeting the interface requirements and envelope dimensions as specified in Drawing 11655469 (see 3.2), the alternator shall be as specified in 3.5.1 through 3.5.3. 3.5.1 Installation compatibility. The alternator shall fit and function as specified in 3.4 when installed on an engine conformin
31、g to Drawing 11682700. 3.5.2 Regulator. The alternator shall fit and function as specified in 3.4 when operating with a regulator conforming to MIL-DTL-62187. 3.5.3 Weight. The alternator shall be no greater than 100 pounds (lb) (45 kilograms (kg). 3.6 Support and ownership requirements. The alterna
32、tor shall possess the life cycle ownership characteristics as specified in 3.6.1 and 3.6.2. 3.6.1 Endurance. The alternator shall withstand operation as specified in table I, with the oil inlet pressure as specified in table II, using contaminated oil, without sustaining damage, and without requirin
33、g servicing or the replacement of parts. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-62186C 6 TABLE I. Endurance time schedule and conditions. Normal attitude 1/ 2/ Cond- Time Alternator Alternator constant Resistive cyclic Total alternat
34、or Cyclic load (seconds) ition (hours) (rpm) load (A) load (A) (A) on off a 1.5 2400 320 330 650 3 57 b 7.5 5120 320 330 650 3 57 c 14.5 3520 320 330 650 3 57 d 0.5 8000 650 0 650 24 hours per cycle Inclined attitude 2/ e 9 2400 f 9 4000 g 9 5000 - no load - h 3 6000 30 hours per cycle 1/ System vol
35、ts at normal attitude shall be 26.50 0.75, applicable at 225 degrees Fahrenheit (F) (107 degrees Celsius (C). Voltage values at lower temperatures shall be in accordance with figure 5. 2/ At the conclusion of 22 cycles at normal attitude, the alternator shall be operated for 6 hours at condition (a)
36、 and 4 hours at condition (b), except with the alternator only at constant load, followed by 2 cycles of inclined attitude. TABLE II. Operating conditions. Time Oil inlet pressure First 600 hours -0.385 0.03 psi (-2.7 0.2 kPa) Second 600 hours 45 2 psi (310 13.8 kPa) Third 600 hours -0.385 0.03 psi
37、(-2.7 0.2 kPa) Fourth 600 hours 45 2 psi (310 13.8 kPa) Fifth 600 hours -0.385 0.03 psi (-2.7 0.2 kPa) 3.6.2 Nameplate. A permanently and legibly marked nameplate shall be conspicuously attached to the alternator frame and shall contain, as a minimum, the following information: a. “Generator, Altern
38、ating Current, Direct Current (Oil Cooled)”. b. “28 Vdc”. c. “650 A”. d. Military part number e. National stock number. f. Manufacturers identification (CAGE). g. Manufacturers serial number. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-62
39、186C 7 h. Contract number. i. Date of manufacture. 3.7 Operating environment requirements. Each regulator shall operate under the environmental conditions as specified in 3.7.1 through 3.7.8. 3.7.1 High temperature. The alternator shall operate in an ambient temperature of 225 5F (107 2.8C) without
40、damage or loss of performance. 3.7.2 Low temperature. The alternator shall meet the low temperature requirements as specified in 3.7.2.1 and 3.7.2.2. 3.7.2.1 Cold soak. The alternator shall operate in an ambient temperature of -25 5F (-31.7 2.8C) without damage or loss of performance, and without th
41、e alternator oil pump outlet pressure exceeding the proof pressure. 3.7.2.2 High viscosity oil. The alternator shall withstand operation at an ambient temperature of -10 2F (-23.3 1C) for at least 24 hours, using grade 10 oil conforming to MIL-PRF-2104, and without indication of failure, fractures,
42、distortions, erosion, internal and external oil leakage, or other evidence of deterioration. 3.7.3 Shock. The alternator shall withstand a saw-tooth wave shock pulse of 20 gravity units (g) for 11 milliseconds (ms) without sustaining damage. 3.7.4 Vibration. The alternator shall withstand exposure t
43、o input vibration levels outlined in figures 6 through 8 for a period of at least 100 minutes in each of the mutually perpendicular axes without damage or loss of performance. 3.7.5 Waterproofness. The alternator shall maintain a differential pressure of nitrogen at 10 pounds per square inch gage (p
44、sig) (69 kPa). The leakage rate shall be not greater than 3 psig (20.7 kPa) in 2 minutes. 3.7.6 Humidity. The alternator shall withstand exposure to 5 continuous 48 hour humidity cycles in accordance with figure 9 without damage or loss of performance. 3.7.7 Aqueous salt environment. The alternator
45、shall operate in an aqueous salt atmosphere (5 1% salt and 95% water) without corroding, sustaining electrical damage, or physically deforming. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-62186C 8 3.7.8 Fungus resistance. The alternator s
46、hall operate in environments conducive to spore germination and growth (air temperature between 75 to 88F (24 to 31C) and relative humidity between 90 to 100% without a compromise in performance attributable to the deleterious effects of fungus. 4. VERIFICATION 4.1 Classification of inspections. Ins
47、pection requirements are classified as follows: a. First article inspection (see 4.1.1). 1. Preproduction inspection (PPI) (see 4.1.1.1). 2. Initial production inspection (IPI) (see 4.1.1.2). b. Conformance inspection (see 4.1.2). 4.1.1 First article inspection. First article inspections shall be pe
48、rformed on preproduction or initial production samples as specified in 4.1.1.1 and 4.1.1.2. 4.1.1.1 Preproduction inspection. When specified (see 6.2), a preproduction sample consisting of two alternators shall be subject to the PPI tests as specified in table III. 4.1.1.2 Initial production inspection. Unless otherwise specified (see 6.2), an initial production sample consisting of two alternators from the first ten produced shall be subject to the IPI tests as specified in table III. TABLE III. Verification methods. First article inspections Requi
