1、 Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any data that may improve this document should be sent to DAMI_STANDARDIZATIONconus.army.mil or U.S. Army RDECOM, Tank Automotive Research, Development and Engineering Center, ATTN: RDTA-EN/STND/TRANS MS #268, 6501
2、 E. 11 Mile Road, Warren, MI 48397-5000. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at https:/assist.daps.dla.mil/online/. AMSC N/A FSC 6220 INCH-POUND A-A-52418A 14 June 2010 SUPERSEDING A-A-52418 11 January
3、 1993 COMMERCIAL ITEM DESCRIPTION LIGHT, WARNING, VEHICULAR: ROTATING UNIT, 14 AND 28 VOLT DC The General Services Administration has authorized the use of this commercial item description (CID) as a replacement for MIL-L-45325E and MS51317D for all federal agencies. 1. Abstract. This CID covers 14-
4、 and 28-volt (V) direct current (DC) rotating warning lights for use on emergency, security, utility, or maintenance vehicles with 12- or 24-V DC electrical systems. The rotating warning light is referred to herein as “warning lights”. 1.1 Classification. Warning lights shall be of the following typ
5、es and classes, as specified (see 2.2 and 6.2): Type I - 14 V DC Type II - 28 V DC Class 1 - Yellow/Amber dome Class 2 - Blue dome Class 3 - Red dome 2. Salient characteristics. 2.1 Materials. Materials shall be as specified herein and in referenced documents. Materials shall be free from defects wh
6、ich adversely affect the performance of the finished product. The use of recovered materials made in compliance with regulatory requirements is acceptable providing that all requirements of this CID are met (see 3.1). 2.1.1 Dome material. The plastic used in fabricating domes shall meet the color an
7、d performance requirements of SAE J576 and SAE J578. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52418A 2 2.1.2 Skirt material. The skirt material shall be metal or plastic and shall meet the requirements specified herein. 2.1.3 Dissimilar me
8、tals. Except where necessary to complete an electrical circuit, contact between dissimilar metals which would encourage galvanic action shall be avoided. Separation of dissimilar metals shall be accomplished by providing insulation between mating surfaces. 2.2 Design and construction. Warning lights
9、 shall be designed and constructed in accordance with figure 1. 2.2.1 Lamps. Warning lights shall utilize two or more sealed beam lamps and shall be wired such that failure of one lamp shall not affect the other functions of the warning light. Mechanism for rotating lamps shall be shielded to preven
10、t interference with wiring. 2.2.2 Mounting hardware. Mounting hardware, including the skirt, shall not be part of the electrical circuit. 2.2.3 Dome. Dome shall be designed to allow ease of removal and re-installation for periodic replacement of lamp(s). 2.2.4 Wires. Lead-in wires shall meet the req
11、uirements of SAE J1128 No. 16, type HDT for low tension, heavy duty, single conductor, unshielded cable. The wire shall terminate with connector MS27144-2 and MS27142-3 (one each). 2.2.5 Wire routing. Wires shall be routed through a hole in the skirt and shall be protected from sharp edges by a rubb
12、er or plastic grommet sealed with silicone RTV. Wires shall extend a minimum of 12 inches below the base of the skirt. 2.3 Performance. 2.3.1 Operation. When supplied with the voltage specified in table I for 35 5 minutes, warning lights shall meet the flashing rate and current requirements of table
13、 I. TABLE I. Operation requirements. Type Voltage (V dc) Flashing rate (flashes/minute) Maximum direct current (amperes) I 140.5 9030 10.5 II 280.5 9030 5.5 2.3.2 Candlepower. The warning lights shall meet the photometric requirements of SAE J845 for the classes and colors specified in table II when
14、 tested in accordance with SAE J575. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52418A 3 TABLE II. Photometric requirements. Class Class per SAE J845 Color 1 1 Yellow 2 2 Signal Blue 3 1 Red 2.3.3 Endurance. Warning lights shall exhibit no e
15、lectrical or mechanical malfunction, except lamp failure, after being operated for 500 hours of on-time with a cycle of 25 minutes on, 5 minutes off. If the lamp burns out, the lamp shall be replaced and the test continued. Subsequently warning lights shall meet the operation requirements of 2.3.1,
16、except the test duration shall be five minutes. 2.4 Environmental. 2.4.1 Extreme temperature. Warning lights shall meet the requirements of both the high temperature and low temperature tests of SAE J845. 2.4.2 Vibration. Warning lights shall show no evidence of disintegration of component materials
17、 or assemblies and shall meet the operation requirements of 2.3.1 for 5 minutes after being subjected to a simple harmonic motion of 0.076 cm (0.152 cm maximum total excursion), the frequency being varied uniformly between 10 and 30 Hertz (Hz). The entire frequency range, 10 to 30 Hz and back to 10
18、Hz, shall be traversed in approximately one minute. This motion shall be applied for 1 hour in each of three mutually perpendicular axis (total of 3 hours). Warning lights shall be operated for the last 10 minutes of each hour for each axis. 2.4.3 Shock. Warning lights shall show no evidence of disi
19、ntegration of component materials or assemblies after being subjected to 18 induced shocks of sawtooth waveform with an amplitude of 25g and a duration of 11 milliseconds (ms). Three shocks shall be applied in both directions of each of three mutually perpendicular axes. Warning lights shall be oper
20、ated while the shocks are applied. Subsequently, warning lights shall meet the operation requirements of 2.3.1, except the test duration shall be five minutes. 2.4.4 Salt fog. Warning lights shall show no evidence of interior or exterior corrosion after exposure to a 5% salt fog at 95 F for 96 hours
21、. Warning lights shall be allowed to dry for 48 hours in an ambient environment prior to examination. The 5% salt solution shall have a pH of 6.5 to 7.2. Subsequently, warning lights shall meet the operation requirements of 2.3.1, except the test duration shall be five minutes. 2.4.5 Water spray. Wa
22、rning lights shall meet the requirements of SAE J575 for water spray. Subsequently, warning lights shall meet the operation requirements of 2.3.1, except the test duration shall be five minutes. 2.4.6 Electromagnetic interference. Provided by IHSNot for ResaleNo reproduction or networking permitted
23、without license from IHS-,-,-A-A-52418A 4 2.4.6.1 Conducted emissions. Electromagnetic emissions shall not appear on DC leads and interconnecting control leads in excess of the limits in figures 2 and 3 for narrowband and broadband emissions, respectively. 2.4.6.2 Radiated emissions. Narrowband elec
24、tric field emissions shall not be radiated in excess of the limits in figure 4 when measured at a distance of one meter. Broadband electric field from all equipment and subsystems, including radiated switching transients from (1) automatic cycling of electronic or electrical switching circuitry, or
25、(2) manual switching shall not be radiated in excess of the limits in figure 5 when measured at a distance of one meter. Above 30 MHz the limits for both narrowband and broadband electric field radiated emissions shall be met for both horizontally and vertically polarized waves. 2.4.7 Weather resist
26、ance. Warning lights shall be exposed to 56 cycles of the solar radiation level in figure 6 (where one 24 hour duration of figure 6 is one cycle). No deviation of spectral distribution for thermal effects shall be allowed. Warning lights shall be mounted as in the vehicle with actual attaching hardw
27、are. Subsequently, warning lights shall meet the requirements of 2.2.3 and 2.3.2. 2.4.8 Heat aging. Warning lights shall show no evidence of cracking, warping, or crazing after exposure to ambient temperatures of not less than 200 F for not less than 240 hours. Subsequently, warning lights shall mee
28、t the requirements of 2.1.1 and 2.3.2. 2.4.9 Dust. Warning lights shall meet the requirements of SAE J575 paragraph 4.3 for dust exposure. Subsequently, warning lights shall meet the operation requirements of 2.3.1, except the test duration shall be five minutes. 2.5 Identification and markings. Unl
29、ess otherwise specified (see 6.2), identification and marking shall be permanent and legible, and shall include as a minimum, the manufacturers CAGE code number, the warning light voltage rating, and CID PIN (see 6.3). 2.6 Installation instructions. Each warning light shall be furnished with complet
30、e instructions covering the installation of the warning light. A wiring diagram showing all of the electrical connections to be made shall be included in the installation instructions. 2.7 Workmanship. The workmanship shall be such quality as to assure that warning lights furnished under this CID ar
31、e free of defects that compromise, limit, or reduce performance or intended use. Warning lights shall be free of burrs, corrosion, scratches, sharp edges, loose components, chips, and unnecessary oil or foreign materials. 3. Regulatory requirements. 3.1 Recycled, recovered, or environmentally prefer
32、able 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 promotes economically advantageous life cycle costs. The offeror/contractor is enco
33、uraged to use Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52418A 5 recovered materials to the maximum extent practicable, in accordance with paragraph 23.403 of the Federal Acquisition Regulation (FAR). 4. Product conformance provisions. 4.1
34、Responsibility for inspection. The contractor is responsible for the performance of all inspections (examinations and tests). 4.2 Contractor certification. The contractor shall certify and maintain substantiating evidence that the product offered meets the salient characteristics of this CID and tha
35、t the product conforms to the producers own drawings, specifications, standards, and quality assurance practices. Items with known defects shall not be submitted for Government acceptance. The Government reserves the right to require proof of such conformance prior to the first delivery and thereaft
36、er as may be otherwise provided for under the provisions of the contract. 5. Packaging. Preservation, packaging, packing, labeling, and marking for the desired level shall be as specified in the contract (see 6.2). 6. Notes. (This section contains information of a general or explanatory nature that
37、may be helpful but is not mandatory.) 6.1 Addresses for obtaining copies of referenced documents. 6.1.1 Non-Government publications. SAE J575 “Tests for Motor Vehicle Lighting Devices and Components”, SAE J576 “Plastic Materials for Use in Optical Parts Such as Lenses and Reflectors of Motor Vehicle
38、 Lighting Devices”, SAE J578 “Color Specification for Electric Signal Lighting Devices”, SAE J845 “360 Degree Warning Lamp for Authorized Emergency, Maintenance and Service Vehicles”, and SAE J1128 “Cable, Primary, Low Tension” are available from Society of Automotive Engineers, 400 Commonwealth Dri
39、ve, Warrendale, PA 15096 or www.sae.org. 6.2 Ordering data. Acquisition documents must specify the following: a. Title, number and date of this CID. b. If required, the specific issue of each document required (see 6.1). c. Type and class of warning light and PIN (see 1.1 and 6.3). d. Marking if oth
40、er than as specified (see 2.5). e. Level of preservation, packaging, labeling, and marking (see 5). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52418A 6 6.3 Part or identification number (PIN). The PIN to be used for warning lights acquired t
41、o this CID is as follows (see 2.5 and 6.2): A 52418 - XX - X Class (color of dome): B - Blue R - Red Y - Yellow/amber Type (voltage rating): 14 - 14 V DC 28 - 28 V DC CID number Commercial item designator 6.4 Cross-reference. Warning lights procured to this CID are substitutable/interchangeable with
42、 warning lights procured to MS51317D as shown in table IV: TABLE IV. CID PIN to MS dash no. cross-reference. CID PIN Superseded MS part no. A 52418-14-Y MS51317-4 A 52418-28-Y MS51317-3 A 52418-14-B MS51317-6 A 52418-28-B MS51317-5 A 52418-14-R MS51317-2 A 52418-28-R MS51317-1 6.5 Metric products. P
43、roducts manufactured to metric dimensions will be considered on an equal basis with those manufactured using inch-pound units, provided they fall within specified tolerances using conversion tables contained in the latest revision of IEEE/ASTM SI10, and all other requirements of this CID are met. If
44、 a product is manufactured to metric dimensions and those dimensions exceed the tolerances specified in the inch-pound units, a request should be made to the contracting officer to determine if the product is acceptable. The contracting officer has the option of accepting or rejecting the product. 6
45、.6 Key words. Emergency Security Maintenance Utility Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52418A 7 FIGURE 1. Warning light. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52418A 8
46、FIGURE 2. Limit fornarrowband, conducted emissions - DC leads and interconnecting leads.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52418A 9 FIGURE 3. Limit forbroadband, conducted emissions- DC leads and interconnecting leads. Provided by IH
47、SNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52418A 10 FIGURE 4. Limit fornarrowband, radiated emissions. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52418A 11 FIGURE 5. Limit forbroadband, radiated
48、emissions. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52418A 12 FIGURE 6. Weather resistance test cycle duration. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52418A 13 Custodians: Preparing Activity: Army - AT Army - AT Navy - YD Air Force - 99 (Project 6220-2010-005) Review activities: Army CR4 DLA GS Navy MC, SH NOTE: The activities listed above were interested in this document as of the date of this document
