1、 - - MIL-PRF-62539A = 9999906 2057976 Lisb pAETRIc I MIL-PRF-6253 9A 3 1 December 1997 SUPERSEDING 22 April 1987 MIL-M-62539(AT) PERFORMANCE SPECIFICATION MODULE, STARTER LOW VOLTAGE PROTECTIVE SYSTEM This specification is approved for use by the U.S. Army Tank-automotive and Armaments Command, Depa
2、rtment of the Army, and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers a low voltage protection module to protect engine starter motor. 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are spec
3、ied in sections 3 and 4 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as examples. We every effort has been made to ensure the completeness of this list, document users are cautioned that they
4、 must meet a specified requirement documents cited in sections 3 and 4 of this specification, whether or nut they are listed. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: U.S. Army Tank-autom
5、otive and Armaments Command, ATTN: AMSTA-TR-E/BLUE, Warren, MI 48397-5000, by using the Standardization Document Improvement Proposal D Form 1426) appearing at the end of this document, or by letter. AMSC N/A FSC 2920 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.
6、Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-6253 9A 2.2 Government documents. 2-21 Soecications. standards. and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein.
7、 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 supplement thereto, cited in the solicitation (see 6.2). SPECIFICATIONS DEPARTMENT OF DEFENSE MIL-STD-8 10 - Environmental Test Met
8、hods (see 4.2.1). (Unless otherwise indicated, copies of the above specifications, standards, and handbooks are available fiom the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19 1 1 1-5094.) 2.2.2 Other Government documents. drawings. and publications. The
9、following other Government documents, drawings, and publications form a part of this document to the extent specified hereh. Unless otherwise specified, the issues are those cited in the solicitation DRAWINGS ARMY 11668620 - Module, Starter Low Voltage Protective System (intefice). (Copies of these
10、drawings are available from the U.S. Army Tank-automotive and Armaments Command, ATTN: AMSTA-TR-EBLUE, Warren, MI 48397-5000.) 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 document takes precedence. Nothing in
11、 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 fkst article inspection in accordance with 4.4. 2 Provided by IHSNot for ResaleNo reproductio
12、n or networking permitted without license from IHS-,-,- MIL-PRF-62539A Ob 2057978 TL9 MIL-PRF-62539A 3.2 Design. Materials. and manufacturing; processes. Unless otherwise specified, the design, materials, and manufacturing process selection shall be the prerogative of the contractor as long as all a
13、rticles submitted to the government My meet the operating, interface, ownership and support, and operating environment requirements specified. 3.3 Operatinn requirements. Each module shall provide the following fimctional, operational, and performance capabilities. 3.3.1 Performance. The module shal
14、l perform as specified herein through the range of 0-34 volts (V) direct current (dc). Nominal battery voltage to the module shall be 24 V dc. Voltage measurements shall be relative to ground. 3.3.1.1 Batterv voltage sensing. The module shall permit continuous variable voltage up to 34 V dc from the
15、 battery to the starter. Continuity shall be provided between pins B and D when voltage greater than 1 1.75 f 1 V dc is applied to pin A with the module grounded. When less than 11.75 f 1 V dc fiom the battery is applied to pin A, continuity between pins B and D shall be interrupted after a 500 f 50
16、 millisecond (ms) delay. Momentary fluctuations down to below the “break” point, as low as 5 V dc during the 500 ms delay shall not cause continuity between pins B and D to be interrupted. When continuity between pins B and D is interrupted due to low voltage, it shall be re-established and maintain
17、ed oniy by removing the power fi-om pin A for 2 f 1 seconds (s) and applying voltage greater than 11.75 f 1 V dc again to pin A. 3.3.1.2 Generator voltage sensing. Continuity between pins C and D shall be prevented when voltage applied to pin C is greater than 17 f 1 V dc. When continuity between pi
18、ns B and D has been stopped because of high voltage at pin C, the module shail be reset by removing power fiom pins A and C for 2 f 1 s and applying voltage greater than 11.75 f 1 up to 34 V dc to pin A. 3.3.1.3 Power rating. The module shall withstand a continuous current draw of 50 amperes (A) and
19、 withstand surges to 100 A (at 24 V dc) through pins B and D. 3.3.1.4 Polarity protection. Performance shall not be impaired by an incident of reverse polarity when the module is operated with a negatively grounded electrical system utilizing electrical storage batteries. 3.3.1.5 Time delav. When 12
20、 V dc or less are applied to pin A with the case grounded, there will be a time delay of 500 ms before interruption of continuity between pins B and D 3.3.1.6 Starter switch bounce. The module shall function normdy when a signal that has a simulated switch wave form is applied to pin A. 3.3,1.7 Diel
21、ectric strength. Leakage of current through circuit insulation to ground shall not be greater than 100 mA when 1000 volts root mean square (V rms) are applied between the 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-PRF-bZ539A 9999906 20579
22、79 955 H MIL-PRF-6253 9A case and either pins B or D with the case ground wire disconnected and pins A and C connected to ground. 3.4 Interface requirements. 3.4.1 Envelope, mounting and connection interface. The low voltage protection module shall conform to the envelope dimensions, the bolt hole l
23、ocations and size and the electrical connection location and interface (see 3.4.4) as specified on drawing 11668620. 3.4.2 Interchangeability. Ail modules including mounting and connecting provisions shaii be completely interchangeable. 3.4.3 Mechanical interface. The module shall be constructed to
24、operate in any mounting attitude. 3.4.4 Electrical interface. Electrical connector pins to the utilizing electrical system shall be designated as follows. Connector Pin Function Battery Voltage Sensor Relay Input Generator Voltage Sensor Relay Output Ground Connector Pin Designation A B C D Case 3.4
25、.5 Weight. The module shall not exceed a weight of 850 grams (g) (30 ounces)(oz). 3.5 Ownership and suDport reauirements. 3.5.1 Endurance. The module shall meet the requirements of 3.3.1, and 3.6.1 after a total of 9000 cycles of making at 100 A and breaking at 20 A in a temperature ranging from -54
26、 to 149C (-65 to 3OOOF). 3.5.2 Identification and marking. Identification and marking of the module shall be permanent and legible, and shaii include, as a minimum. a. Module, starter low voltage protection. b. 24 Vdc. c. Identifkation part number. d. Manufacturers identifkation number (CAGE). 4 Pro
27、vided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-PRF-62539A m 9999906 2057980 677 m MIL-PRF-6253 9A 3.6 Environmental requirements. The module shall operate under the following environmental conditions, without degradation in performance. 3.6.1 Wate
28、rproofhess. After being submerged in 5 % of saline solution (5 parts by weight of salt in 95 parts by weight in distilled water). 3.6.2 Shock resistance. After exposure to shock resistance test. 3.6.3 Vibration resistance. During and after exposure to vibrations encountered in the operating environm
29、ent. 3.6.4 Temperature shock resistance. Mer exposure to temperature shock. 3.6.5 Sait fog resistance. After exposure to salt fog. 3.6.6 Humiditv resistance. After storage under induced high temperature and humidity conditions. 3.6.7 Fungus resistance. Mer exposure to fungal growth. 4. VERIFICATION
30、4.1 Classification of inspections. The inspection requirements specified herein are classified as follows: a. First article inspection (see 4.3. i). b. Conformance inspections (see 4.3.2). 4.2 Verification methods. The types of verification methods included in this section are visual inspection, mea
31、surement, sample tests, fidi-scale demonstration tests, simulation, modeling, engineering evaluation, component properties analysis, and similarity to previously-approved or previously-qualified designs. 4.2.1 Verification alternatives. The manufacturer may propose alternative test methods, techniqu
32、es, or equipment, including the application of statistical process control, tool control, or cost-effective sampling procedures, to verify performance. See the contract for alternatives that replace verifications required by the specifications. 4.3 Order of inspection. The inspection sequence may be
33、 in any order. 4.3.1 First article inspection. First article inspection shall be performed on the first four production samples as specified in table I. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-62539A TABLE I. Order of first article
34、test. Sample 1 Battery voltage sensing Generator voltage sensing Polarity protection Time delay Starter switch bounce Waterproofhess Shock resistance Salt fog resistance Fungus resistance Battery voltage sensing Generator voltage sensing Time delay Battery voltage sensing Generator voltage sensing P
35、olarity protection Time delay Waterproofhess Vibration resistance Battery voltage sensing Generator voltage sensing Time delay Battery voltage sensing I Generator voltage sensing Polarity protection Time delay Waterproofhess Shock resistance Humidity resistance Battery voltage sensing Generator volt
36、age sensing Time delay Sample 2 Sample 3 4.5.1 4.5.2 4.5.4 4.5.5 4.5.6 4.8.1 4.8.2 4.8.5 4.8.6 4.5.1 4.5.2 4.5.5 4.5.1 4.5.2 4.5.4 4.5.5 4.8.1 4.8.3 4.5.1 4.5.1 4.5.5 4.5.1 4.5.2 4.5.4 4.5.5 4.8.1 4.8.2 4.8.6 4.5.1 4.5.2 4.5.5 6 Provided by IHSNot for ResaleNo reproduction or networking permitted wi
37、thout license from IHS-,-,-MIL-PRF-62539A Battery voltage sensing Generator voltage sensing Power rating Polarity protection Time delay Waterproofness Temperature shock Endurance 4.5.1 4.5.2 4.5.3 4.5.4 4.5.5 4.8.1 4.8.4 4.7.1 TABLE II. Operating requirements Battery voltage sensing Generator voltag
38、e sensing Power rating Polarity protection Time delay Starter switch bounce Dielectric strength Interface requirements Envelope, mounting and connection interface Ownership and support requirements Endurance Identification and marking Environmental requirements Waterproofness Shock resistance Vibrat
39、ion resistance Temperature shock Salt fog resistance Humidity resistance Fungus resistance - 1/ SIE = Standard Inspection Title resistance fication methods. Requirement 3.3 3.3.1.1 3.3.1.2 3.3.1.3 3.3.1.4 3.3.1.5 3.3.1.6 3.3.1.7 3.4 3.4.1 th 3.4.5 3.5 3.5.1 3.5.2 3.6 3.6.1 3.6.2 3.6.3 3.6.4 3.6.5 3.
40、6.6 3.6.7 ,quipment. Verification 4.5 4.5.1 4.5.2 4.5.3 4.5.4 4.5.5 4.5.6 4.5.7 4.6 4.2 4.7 4.7.1 4.7.2 4.8 4.8.1 4.8.2 4.8.3 4.8.4 4.8.5 4.8.6 4.8.7 7 c Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-62539A 9999906 2057983 386 MIL-PRF-6253
41、9A 4.3.2 Conformance inspection. Conformance inspection shall include the examinations and tests from table II as defined in the contract. 4.4 Inspection conditions. Unless otherwise specified (see 6.2), all inspections shall be conducted under the following conditions: a. Air temperature: 22.8 f 10
42、C (73 +18”F) b. Barometric pressure: 96.5 (+6.8, -15.2) kilopascal (Da) (28.5 (+2, - 4.5) inches (in) Hg of mercury c. Relative humidity: 50 230 percent. 4.5 Operating reauirements verification. 4.5.1 Battery voltage sensing. The module shall be connected to 0-34 V dc variable voltage power source w
43、ith voltmeter and lamp as shown in figure 1. Connect pins A and B to source, pin D to lamp, while pin C is unconnected. With power supply set at 14 V dc or above, the switch shall be closed to energize unit. Wait at least 500 ms to allow “OW delay timer to time out. Raise voltage to 34 V dc observin
44、g lamp action. Lower voltage slowly until lamp goes out. Record voltage at which lamp goes out. Continue to reduce to 4 V dc. Increase voltage to 34 V dc, lamp should not relight. 4.5.2 Generator voltage sensing. The module shail be connected to 0-34 V dc variable voltage power source with voltmeter
45、 and a lamp as shown in figure 1. Connect pins A, B, and C to source, and pin D to lamp (Note: this differs from figure 1 - reference 4.2). With power supply set to 15 f 1 V dc close switch energizing unit. No time delay required. Raise supply voltage slowly until lamp turns off Record voltage. Rais
46、e voltage to 34 V dc observing lamp action. Reduce voltage slowly to 14 V dc. 4.5.3 Power rating;. The module shall be tested in a circuit as shown in figure 2 for 3000 cycles at a rate of 17 minutes per cycle. The current draw shall be 50 A for duration of 15 min followed by a surge to 100 A for a
47、duration of 70 ms. 4.5.4 Polarity protection. The module shall be connected with positive potential connected to the case and negative potential connected to pins A, B and C for one minute Reconnect pin as specified in 3.4.4. Ver performance of 3 3.1.1 and 3.3.1.2 to assure conformance to 3.3.1.4. 8
48、 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-VOLT- METER 24 DC AB CD 11668620 MIL-PRF-62539A 9999906 2057984 212 = CASEGROUND 0 MIL-PRF-62539A / SWITCH ADJUSTABLE REGULATED DC POWER SUPPLY 24 V LAMP FIGURE 1. Schematic for voltage tests. 4.5.5 Ti
49、me delay. The module shall be connected to 0-34 V dc variable voltage power source per figure 3 with voltmeter and oscilloscope (or electronic counter). Preset power supply voltage to 11 25 f 0.25 V dc. Close switch, energizing module and initiating scope trace sweep. When internal relay drops out, scope trace indicates time delay. See figure 3. 4.5.6 Starter switch bounce !figure 3). App
