1、r 8- 521 MIL-C-24095B(SH) 3 October 1979 SUPERSEDING MIL-B-24095A(SHIPS) 29 December 1975 (See 6.6) MILITARY SPECIFICATION CHARGER, BATTERY, AUTOMATIC, PORTABLE, RECTIFIER TYPE This specification is approved or use by the Naval Sea Systems Command, Department of the Navy, and is available for use by
2、 all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 This specification covers an automatic portable rectifier type battery charger for charging lead acid batteries. 2. APPLICABLE DOCUMENTS 2.1 Issues of documents. The following documents, of the issue in effect on date of invita
3、tion-forbiE or request for proposal, form a part of the specification to the extent specified herein. SPECIFICATIONS FEDERAL UU-P-268 - Paper Kraft, Wrapping. PPP-C-850 - Cushioning Material, Polystyrene Expanded, Resilient PPP-C-1120 - Cushioning Material, Uncompressed Bound Fiber For (For Packagin
4、g Uses) Packaging. MILITARY MIL-R-19 - Resistor, Variable, Wire-Wound (Low Operating Temperature) General Specification For. MIL-R-22 - Resistor, Variable (Wirewound, Power Type), General Specification For. MIL-C-25 - Capacitor, Fixed, Paper-Dielectric, Direct-Current (Hermetically Sealed in Metalli
5、c Cases), General Specification For. MIL-R-26 - Resistor, Fixed, Wirewound (Power Type), General Specification For. MIL-C-62 - Capacitor, Fixed, Electrolytic (DC, Aluminum, Dry Electrolyte, Polarized), General Specification For. MIL-B-117 - Bag, Sleeves and Tubing - Interior Packaging. MIL-1-631 - I
6、nsulation, Electrical, Synthetic-Resin, Composition, Nonrigid. MIL-S-901 - Shock Tests, H.I. (High-Impact) Shipboard Machinery, Equipment and MIL-E-917 - Electric Power Equipment, Basic Requirements for (Naval Shipboard MIL-1-1361 - Instrument Auxiliaries, Electrical Measuring: MIL-E-2036 - Enclosur
7、es for Electric and Electronic Equipment, Naval Ship- MIL-R-2726/36 - Receptacle, Electrical, 40 Ampere, 125 Volt, Single Pole, MIL-L-3661 - Lampholders, Indicator Lights, Indicator-Light Housings, and Systems, Requirements For. Use). Shunts, Resistors, and Transformers. board. Panel Mounted, Male T
8、ype (Symbol No. 1213.3 - Red) and (Symbol No. 1213.5 - Black). Indicator-Light Lenses, General Specification For. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be o use in improving this document should be addressed to: Commander, Naval Sea Systems Comm
9、and, SEA 3112, Department of the Navy, Washington, DC 20362 by using the self-addressed Standardization Document improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. FSC 6130 - E Provided by IHSNot for ResaleNo reproduction or networking permitted without license f
10、rom IHS-,-,-MIL-C-24095B 61 9999906 0089320 9 MIL-C-24095B (CH) MILITARY (Continued) MIL-S-3786 - Switches, Rotary (Circuit Selector, Low-Current Capacity) , General MIL-R-6130 - Rubber, Cellular, Chemically Blown. MIL-M-10304 - Meters, Electrical Indicating, Panel Type, Ruggedized, General Specific
11、ation For. MIL-P-15024 - Plates, Tags and Bands for Identification of Equipment. MIL-P-15024/5 - Plates, Identification. MIL-R-15109 - Resistors and Rheostats, Naval Shipboard. MIL-F-15160 - Fuses; Instrument, Power and Telephone - General Specification MIL-S-15291 - Switches, Rotary, Snap Action. M
12、IL-0-16485 - Ohmmeters, Insulation Resistance-Indicating, Portable. MIL-E-17555 - Electronic and Electrical Equipment, Accessories, and Repair Parts; Packaging and Packing of. MIL-S-19500 - Semiconductor Devices, General Specification For. MIL-C-19978 - Capacitors, Fixed Plastic (or Paper-Plastic) D
13、ielectric (Hermetically Sealed in Metal, Ceramic, or Glass Cases), Established and Non-Established Reliability, General Specifica- tion For. (Foamed Latex). Specification For. For. MIL-R-20092 - Rubber Sheets and Molded Shapes, Cellular, Synthetic Open Cell MIL-P-26514 - Polyurethane Foam, Rigid or
14、Flexible For Packaging. MIL-M-38510 - Microcircuits, General Specification For. MIL-C-39003 - Capacitors, Fixed, Electrolytic Tantalum, Solid Electrolyte, Established Reliability, General Specification For. MIL-R-39008 - Resistors, Fixed, Composition (Insulated), Established Reliability General Spec
15、ification For. MIL-T-55164 - Terminal Boards, Molded, Barrier, Screw and Stud Types, and Associated Accessories, General Specification For. MIL-B-81705 - Barrier Materials, Flexible, Electrostatic-Free, Heat Sealable. MIL-P-81997 - Pouches, Cushioned, Flexible, Electrostatic-Free, Reclosable Transpa
16、rent. STANDARDS MILITARY MIL-STD-167-1 - Mechanical Vibrations of Shipboard Equipment (Type I - MIL-STD-461 - Electromagnetic Interference Characteristics Requirements or MIL-STD-470 - Maintainability Program Requirements (For Systems and Equpments). MIL-STD-471 - Maintainability Verification/Demons
17、tration/Evauation. MIL-STD-701 - Lists of Standard Semiconductor Devices. MIL-STD-740 - Airborne And Structureborne Noise Measurements And Acceptance Criteria of Shipboard Equipment. MIL-STD-785 - Reliability Program (For Systems and Equipments Development And Production. MIL-STD-883 - Test Methods
18、and Procedures For Microelectronics. DOD-STD-1399, Section 300 - Electric Power, Alternating Current (Metric). MIL-STD-1472 - Human Engineering Design Criteria For Military Systems, MS 90363 - Box Fiberboard, With Cushioning for Special Minimum Cube Storage Environmental and Type II Internally Excit
19、ed). Equipment. Equipment And Facilities. and Limited Reuse Applications. PUBLICATIONS NAVAL SEA SYSTEMS COMMAND NAVSEA 0967-LP-312-8010 - Electronic Equipment, Shipboard, Maintainability Design Criteria Handbook, For Designers Of. in connection with specific acquisition functions should be obtained
20、 from the contracting activity or as directed by the contracting officer.) (Copies of specifications, standards, drawings, and publications required by contractors 3. REQUIREMENTS 3.1 Qualification. Battery chargers furnished under this specification shall be prod- ucts which are qualified for listi
21、ng on the applicable qualified products list at the time set for opening of bids (see 4.3 and 6.3). 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.2 General re uirements. The equipment shall meet the requirements of MIL-E-917, and the require-o-
22、 t is specification except as otherwise specified in the contract or order. If any requirement specified herein conflicts with the requirements of MIL-E-917, the require- ments- of this specification shall govern. 3.3 Detail requirements. Battery chargers shall be as specified in table I. TABLE I. D
23、etail requirements. Parame ter A.C. input: Volts Frequency Phase Volts D.C. output: Current Efficiency Duty Charging period Enclosure Ambient temperature Ventilation Mounting Rectifying element Control element Weight Size Meters MIL-C-24075B bL = 77777Ob O712L O Requirement 115+5 percent 60 hertz (H
24、z) 55 percent .I Charging voltage as selected for Charging current limiting as selected for Losses at any load condition, Continuous 8 hours (see 3.3.2) (12 hours for 300 Ah Battery Dripproof protected (see 3.3.9) (see 3.3.11) Natural draft Deck or bulkhead and portable Provision for stacking charge
25、rs 3 high, directly above one another (see 3.3.9) Silicon rectifiers Silicon controlled rectifiers Maximum 125 pounds Maximum volume of 2.5 cubic feet D.C. voltmeter and d.c. ammeter charging 1, 3, 4, 6, 12, and 18 cells ampere ranges (see 6.1) 450 watts, maximum -7OC to 5OoC (20F to 122F) 3.3.1 D.c
26、. output. The direct current (d.c.) output voltage and current shall be as necessary to-e the charging operation specified in 3.3.2. provided for selection of charging voltage by the number of cells in the battery and maximum charging current by ampere-hour rating. Selector switches shall be 3.3.2 O
27、 eration (batter char in 1. When adjusted by correct setting of control switches to conditions- of cell.: and ampk-e-hour rating) required by a battery to be charged, the charger shall automatically regulate output voltage and current to such values as necessary to fully charge the connected battery
28、 in the following manner. The charger shall deliver a charging current to the battery in the range (see 6.1), set by the charging current selector switch. This current shall be maintained until the voltage required to supply this current reaches 2.35 volts-per-cell + 0.02 volts-per-cell at 25OC (see
29、 3.3.2.3), as selected by the series cells selector switcher. the charge current shall be limited to a value not exceeding 1/60 of the battery ampere-hour battery rating. the battery shall occur if the battery remains connected to the battery charger for 24 hours after charging current has been decr
30、eased to the above value. (excluding temperature change due to ambient temperature change) shall not exceed 9OC during the charging period. The regulated output voltage of 2.35 volts-per-cell (finishing or end of charge voltage) shall be compensated automatically for variations in ambient temperatur
31、e of the battery by reducing to finishing voltage 5.4 to 7.2 millivolts per OC per cell. This amounts to a negative temperature coefficient, and shall be minus 5.4 to minus 7.2 millivolts per cell per OC (see 3.3.2.4). The voltage and current shall be smoothly controlled without the use of moving pa
32、rts. At or before the end of the normal charging period, Charging current shall be limited so that no detrimental overcharging of Battery temperature rise 3.3.2.1 Reversed batter . Battery charger and operator shall sustain no damage/injury when, the char-onnecte3 with incorrect polarity to any batt
33、ery of up to 18 series- connected cells in any combination of switch settings. 3.3.2.2 Misoperation. Battery charger, shall sustain no damage and operator shall not be exposed to hazard if the charger is connected to or disconnected from any battery of up to 18 series-connected cells, regardless of
34、setting of control switches, and regardless of . whether the alternating current (a.c.) input is energized. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-24095B (SH) 3.3.2.3 Internal adustment. By operation of an internally accessible rheos
35、tat (slotted shaft for screwdriver ah the finishing voltage of 2.35 volts-per-cell shall be adjustable over the range of 2.20 to 2.50. 3.3.2.4 Tem erature com ensation. The output voltage of the battery shall be auto- matically comp- ambfent temperatures affecting the temperature of the battery. The
36、 compensation shall be minus 5.4 to minus 7.2 millivolts per cell per OC. 3.3.2.5 Output protection. The charger circuitry shall not be damaged by either of the following: (a) Disconnecting the output cable from the battery while charging is in (b) Turning on the charger input power when the output
37、cable is not connected (c) Connecting the battery to the output cable before turning on the progress. to a battery. charger input power. 3.3.3 Switches. The following switches shall be provided and installed on the enclosure front: (a) A.C. input switch, 2-pole in accordance with MIL-C-15291. (b) Ou
38、tput voltage control switch, rotary, 6-position, to select the number of battery cells in series to be charged. This switch shall also select the voltmeter range. ic) Output current limit control switch, rotary, 5-positionI to select the maximum charging current to be supplied to a battery connected
39、 to the output of the charger. This switch shall also select the ammeter range. (d) Switches of (b) and (c) shall be in accordance with MIL-S-3786. 3.3.3.1 Switch plates. Switches used for control of output voltage and current shall be fitted withinformation plates as shown on figure 1. The dimensio
40、n “L“ (see figure 1) represents the “sweep“ diameter of the control knob as it is rotated through the various positions. Thus the control knob pointer shall extend to, but no portion of the knob shall extend over, the outer ring of the switch plate. The overall diameter “D“ of the switch plate shall
41、 be a minimum of 3 inches. The markings of the switch plates should correspond with the detents of the switches used. The arc of the ranges shown in figure 1 are for illustration purposes only. 3.3.4 Meters and meter accessories. Meters and meter accessories shall be furnished as an integrwtf theequ
42、ipment. to include any necessary meter accessories. Meters shall be in accordance with MIL-M-10304 (with external zero adjustor). Meter accessories (shunts, resistors, and similar items) shall be in accordance with MIL-1-1361. Meter range shall be as appropriate for the appli- cation to give approxi
43、mately two-thirds full scale deflection at full load conditions. A voltmeter and ammeter shall be provided for measuring the total output current and output voltage. Meters shall be ruggedized (HI shockproof), 3-1/2 inch round panel type in accord- ance with MIL-M-10304. Ammeters shall operate from
44、a 50 millivolt external shunt. Volt- meter ranges shall be 0-10 volts and 0-50 volts. Ammeter ranges shall be 0-20 amperes and 0-50 amperes. When meters are specified this shall be understood 3.3.4.1 Power on indicator lights. Each battery charger shall be provided with an indicator light in accorda
45、nce with MIL-L-3661 and shall have push-to-test provision. The indicator light shall be connected to indicate when the battery charger is energized. The indicator light shall be mounted on the front exterior of the battery charger enclosure. 3.3.5 Fuses and fuseholders. The a.c. input and d.c, outpu
46、t circuits shall be provided withe=s required (for the protection specified in 3.3.2.1) mounted on the main terminal board. Fuses shall be in accordance with MIL-F-15160. Fuses shall be readily accessible (see 3.3.9). The fuseholders shall be the clip type and readily accessible. 3.3.6 Warnin2 plate
47、. A warning plate shall be mounted on the front panel stating the following : 88Compartment ventilation system must be in operation when batteries are being charged. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.3.7 Receptacles connections. 3.3
48、.7.1 A.C. in ut Charger shall be provided with a terminal board for connection of the a.c. inzls Input power shall be in accordance with DOD-STD-1399, section 300, type I. 3.3.7.2 D.C. out ut. ance with MIL-R32+(one black, 1213.5 and one red, 1213.3). positive , red; negative, black. 3.3.8 Semicondu
49、ctor devices. Semiconductor devices shall be silicon types and shall be selected From MIL-STD-701. specification sheets of MIL-S-19500. Operational amplifiers shall comply with MIL-Y-38510 and MIL-STD-883. For applications which require semiconductor components of ratings other than those listed in MIL-STD-701, the contractor shall obtain components as required by MIL-E-917, and further, acquisition shall be made to the general requirements of MIL-S-19500 and, for specific electrical character
