1、MI L I TARY SP EC I F I CAT I ON (CABINET, EQUIPMENT STOWAGE - BATTERY CHARGING BCU-lWE) This specification has been approved by the Naval Air Systems Command, Department of the Navy. shall provide storage and charge facilities for Beacon Radio, T-l129A/ URT-26(V) and Battery Assembly, Control, Disp
2、enser BB-620/URT-26(V) at Organizational Level. I 1.2 Classification - This eauiDment shall be Class 2 THIS DOCUMENT CONTA1NS 20 PAGES. I .- F SC-5825 -. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-1772 54 W 7779706 0172513 5 W MIM-81972 (A
3、S) 2. APPLICABLE DOCUMENTS 2.1 General - The following doctiments of the issue in effect on the date of invitation for bids or request for proposal form a part of this specification to the extent specified herein. MIL-T-21200 Test Equipment for use with Electronic and Electrical Equipment, General S
4、pecification for. MIL-F-15733 MIL-R-900 MIL-S-3786 MIL-S- 39 50 MIL- S y88 3 4 MIL-N-25027 MIL-T-27 MIL-C-39019 MIL-T-713 MIL-N-1830 7 MIL-M-7 7 93 . MIL-T-18303 MIL-STD-143 MIL-STD-454 MIL-STD-415 MIL-STD-108 MIL-BUL- 4 O0 MS-25083 Filter, R.F. General Specification for. Rubber Gasket Material. Swi
5、tch, Rotary, General Specification for. Switch,. Toggle General Specification for. Switch, Toggle, Positive Break, Aircraft, General Specification for. Nut , Self -Locking Transformer and Inductor, General Specification for. Circuit Breakers, Magnetic, Low-Power, Sealed, Trip-Free, General Specifica
6、tion for. Twine, Impregnated, Lacing and Tying. Nomenclature and Nameplates for Aeronautical Electronic and Associated Equipment. Meter, Time Totalizing. Test Procedures, Preproduction and Inspection, for Aircraft Electronic Equipment, format for. Standards and Specifications Order of Precedence for
7、 the Selection of. Standard General Requirements for Electronic Equipment. Test Provisions for Electronic Systems and Associated Equipment. Definition of and Basic Requirements for, Enclosure for Electric and Electronic Equipment. Airborne Electrohic and Associated Equipment, Applicable Documents. J
8、umper Assembly, Electric, Bonding and Current Return. Specification Control Drawing 10114 (Leigh Instruments Limited) Battery, Stowage, Nickel-Cadmium 2 Ampere-hour. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-2.1.1 Availability of Documents (1
9、) When requesting specifications, standards, drawings, and publications, refer to both title and number. Copies of this specification and applicable specifications required by contractors in connection with specific procurement functions may-be obtained upon application to the Commanding Officer, Na
10、val Publications and Forms Center, 5801 Tabor Avenue, Philadelphia, Pennsylvania 19120 3. REQUIREMENTS 3.1 Testing - This specification makes provision for testing (see 4). 3.2 Materials, Parts, and Processes - Materials, Parts and Processes shall be in accordance with MIL-T-21200 as stated herein.
11、3.2.1 Selection of Parts - All parts used in the con- struction of the equipment shall be in accordance with the require- ments stated herein. The selection of parts shall be in accordance with the following order of preference: (a) MIL-BUL-400 (b) Other Standards, Specifications and requirements li
12、sted herein but not included in MIL-BUL-400 ( C) MIL-STD-143 All parts used except as covered in (a) and (b) will require written approval in accordance with 3.2.1.1. 3.2.1.1 Approval of Non-Standard Parts - Action for approval of non-standard parts shall be in accordance with MIL-T- 21200 Category
13、III. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-81772 58 7799906 0172515 7 MILrC-E11972( AS) 3.2.2 Interchangeability - Interchangeability shall be in accordance with MIL-STD-454 requirement 7. 3.2.3 Batteries - Batteries shall be Nickel
14、-Cadmium rechargeable sealed cells in accordance with Leigh Instruments Specification Control Drawing 10114. Batteries shall be rigidly mounted and shall be removable and replaceable without damage to the equipment. The battery compartment shall be marked as specified herein to indicate connections,
15、 polarity, voltage, and manufacturers part number, 3.2.4 Cable and Wiring 3.2.4.1 Wire,Hook-up - Hook-up wire shall conform to MIL-STD-454 Requirement 20. 3.2.4.1.1 Color Coding of Hook-up Wiring - Color coding identification shall be used for all chassis wiring; in accordance - with MIL-STD-454, Re
16、quirement 20. 3.2.4.2 Interconnection Cable - Power cable shall conform to MIL-STD-454 Requirement 66. 3.2.5 Connec tors 3.2.5.1 Electrical Connectors - Electrical connectors shall conform to MIL-STD-454 Requirement 10. which can continue to be energized after unmating shall have socket contacts. Co
17、nnectors or receptacles 3.2.6 Filters, R.F. - Power line radio interference filters shall conform toMIL-F-15733. 3.2.7 Gaskets - Wherever possible, gasketed surfaces shall have metal-to-metal contact so that the amount of gasket compression can be controlled. corners of square or rectangular enclosu
18、re openings shall be the maximum value that will not restrict access of inhibit design. The minimum radius shall be consistent with the gasket material. The inside radius of gaskets at 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-1972 58 m
19、 9777906 0172516 O m MIL-C-81972 (AS) 3.2.7.1 Gasket Material - Material for non-oil-resistant applications shall conform to MIL-R-900. 3.2.8 Meters - Electrical indicating meters shall be in accordance with MIL-T-21200. 3.2.8.1 External Adjustment - All panel indicating meters shall provide for ext
20、ernal zero adjustment. 3.2.8.2 Luminous Markings - Radioactive materials such as self-luminous dial markings, shall not be used. 3.2.9 Rotary Switches - Rotary switches shall conform to MIL-S-3786. 3.2.10 Toggle Switches - Toggle switches shall conform to MIL-S-3950 or MIL-S-8834. 3.2.11 Threaded De
21、vices - Threaded bolts, nuts, screws and studs employed in the construction ofthe equipment shall conform to MIL-STD-454 Requirement 12. 3.2.12 Nuts - All nuts shall be metal self-locking and shall conform to MIL-N-25027. 3.2.13 Transformers - Transformers shall conform to MIL-T-27 Grade 5 temperatu
22、re Class S, life expectance X. Power transformers shall incorporate electrostatic shields. 3.2.14 . Circuit Breakers - Circuit breakers shall conform to. MIL-C-39019. 3.3 Design and Construction 3.3.1 Pigtailed Parts Mounting - Parts provided with pig- tail leads such as small resistors and capacito
23、rs, other than those mounted on printed wiring boards shall be secured between solder- type terminals on part mounting boards whose general design and material are as specified herein. The arrangement of these parts shall be such as to limit the number of leads terminating at any one terminal to thr
24、ee. - 7 5 -_. ; .- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIGC-81972( AS) Parts with axial leads shall not be supported by means of the wire leads alone except that parts whose weight does not exceed 1/2 ounce may be secured only by their le
25、ads if the total length of leads does not exceed 1 inch. 3.3.1.1 Soldering - Soldering shall be in accordance with Requirement 5 of MIL-STD-454. 3.3.2 Fungus-Nutrient Materials - Only fungus-inert materials shall be used in the construction of the equipment. 3.3.3 Tape, Lacing - Lacing tape for harn
26、esses shall conform to MIL-T-713, Type P, Class 2, waxed. 3.3.4 Aluminum Alloy - Aluminum alloy used in the construction of the equipment shall comply with Para 3.1.6.3 of MIL-I-21200. 3.3.5 Finishes-All finishes used in the construction of the equipment shall comply with MIL-T-21200 Para 3.1.8. 3.3
27、.6 Safety - Equipment design shall comply with Requirement 1 of M.IL-STD-454. A battle short will not be required. 3.3.6.1 Primary Power Circuits - Primary power circuits shall be isolated from the equipment enclosure or chassis. 3.3.6.2 Overload Protection - Overload protection shall conform to Req
28、uirement 8 of MIL-STD-454, Class 1. Protection shall be furnished by trip free circuit breakers in accordance with Para 3.2.14 of this specification. 3.3.6.3 Bonding - The equipment enclosure shall be furnished with a stud for grounding purposes. dia (USS thread), spot welded to the cabinet. This st
29、ud shall be 3/8 inch 3.3.6.3.1 Electrical bonding of access doors etc, shall be by means of bonding jumpers conforming to MS25083 . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-81772 58 m 7997906 0172518 4 W MIL-(3-81972 (AS) 3.3.7 Cabling -
30、 Internal conductors shall be combined into a harness wherever possible and securely held by lacing tape (see Para 3.3.3) or cable ducts. When cabling is carried across a hinge sufficient support, slack and protection shall be provided to prevent chafing or breakage with repeated flexing. Selection
31、of cables shall be in accordance with Requirement66 of MIL-STD-454. 3.3.8 Test Points - Test points shall be provided conf ohing to MIL-STD-415. 3.3.9 Enclosure - The basic enclosure shall conform to Class 2 of MIL-T-21200 and shall be watertight in accordance with MIL-STD-108. With the cover remove
32、d and the access door closed, the enclosure shall be drip-proof in accordance with MIL-STD-108. 3.3.9.1 Access Door - The internal access door shall be capable of being retained in its open position to prevent acci- dental closing due to ship movement. When open, covers, doors etc, shall not cause t
33、he equipment to overbalance. 3.3.9.2 Access Door Fastening - The internal access door shall be-hinged on one of the longer sides and shall be fastened by a lever and three-point latch on the opposite side. 3.3.10 Panels - Panel layouts and arrangement of operating controls shall conform to MIL-T-212
34、00. Lighting of control panels shall not be required. 3.3.11 Nomenclature and Nameplates - Nomenclature shall be requested and assigned in accordance with MIL-N-18307. Name- plates shall conform to MIL-N-18307. 3.3.12 Workmanship - General workmanship shall conform to Requirement 9 of MIL-STD-454. 3
35、.4 Performance 3.4.1 Electrical - The equipment shall operate from a nominal 115V 60 Hz single phase supply. All performance require- ments shall be met within the steady state tolerances of plus or minus 10 percent nominal voltage and plus or minus 5 percent of nominal frequency . 7 7 - Provided by
36、 IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-81972 58 W 7797706 01725L7 6 m MIL-C-81972( AS) 3.4.1.1 Transient Vo,:age - The equipment shall withstan1 a voltage transient of up.to plus or minus 20 percent of nominal from any point within the steady sta
37、te limits, recoverable to the steady state limits within 2 seconds. Stated performance is not required during transients, but shall be recovered on recovery inside the steady state limits. 3.4.1.2 Transient Frequency - The equipment shall withstand a frequency transient of up to plus or minus 3 perc
38、ent of nominal, from any point within the steady state limits such that total departure from nominal does not exceed plus or minus 6 percent of nominal, recoverable to the steady state limits within 2 seconds. Ctated performance shall be maintained during frequency transients. 3.4.1.3 Power nterrupt
39、ion - The equipment shall withstand the fQllowing power interruptions: (a) Power loss for up to 30 seconds. (b) High voltage transients of up to 3.5 times nominal supply voltage of less than one cycle duration, ie: 16.7 milliseconds. 3.4.2 Vibration - Stated performance shall be maintained when subj
40、ected to MIL-T-21200, Class 2 vibration. 3.4.3 Shock - The equipment shall meet the requirements of Para 3.2.19.5 of MIL-T-21200. Stated performance shall be maintained during and after all shock tests. Additionally, units stored internally (see 3.5.1) shall be protected from all damage associated w
41、ith applied shocks as specified herein. 3.4.4 Environmental - Stated performance shall be maintained under any oc all of the following environmental.-.* conditions: 3.4.4.1 Temperature Operating Non-Opera ting -4O:C to +55:C -62 C to +85 C 8 Provided by IHSNot for ResaleNo reproduction or networking
42、 permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_- MIL-C-1772 58 i 777770b 0172521 4 M MIL-C-81972 (AS) 3.5 Detail Requirements 3.5. l Function - The equipment shall provide for pro- tective storage and charge
43、of: (a) Not exceeding quantity three (3) T-1129/URT-26(V) or T-1129A/URT-26(V). (or any combination not exceeding three ) . (b) Not exceeding quantity three (3) BB-620/URT-26(V) 3.5.2 Charge Current - The equipment shall provide for selection of either of two charge rates for each stored unit. The t
44、wo charge rates shall provide for 24 hour charge and continuous standby (trickle) charging respectively. The alternative charge rates shall be as follows: CHARGE (0.08C approx) STANDBY (0.01C approx) T-1129 0.llA (0.165A RMS) 20 mA (30 mA RMS) BB-620 O.llA (0.2A RMS) 20 mA (36 mA RMS) 3.5.2.1 Select
45、ion of Charge Rate - Cnarge rate selection shall be by-means of six two position switches on the front of the equipment, one switch for each stored unit. There shall be no restriction on the possible combinations of charge rages selected for each stored unit. 3.5.3 Time Meter - The equipment shall c
46、ontain an elapsed The time meter shall be visible from the front of the The meter shall conform to MIL-M-7793. time meter monitoring the total number of hours of operation of the equipment. equipment. 3.5.4 Emergency Shut-off Voltage Supply - The equipment shall include provision for an integral eme
47、rgency voltage source to prevent inadvertent Beacon transmission in the event of power loss or failure while under,charge or storage. 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3. MIL-C-1772 58 77777Ob 0372522 b MIL-C-81972 (AS) .5 Battery Vo
48、ltmeter - The equipment shall include, visible on the front of the equipment a voltmeter to enable moni- toring of battery voltage under charge. for each type of battery shall be indicated on the scale of the meter. The meter shall monitor the following voltages: Normal range of voltage (a) T-1129/U
49、RT-26 (V) battery voltage Bay 1 (b) T-1129/URT-26 (V) battery voltage Bay 2 (c) T-1129/WT-26(V) battery voltage Bay 3 (d) BB-620/URT-26(V) battery voltage Bay 1 (e) BB-620/URT-26(V) battery voltage Bay 2 (f) BB-620/URT-26(V) battery voltage Bay 3 (g) BB-620/URT-26(V) battery voltage under (h) BA-1109/URT-26(V) battery voltage under (i) internal emergency beacon shut-
