AIR FORCE A-A-50749-1987 CURRENT-VOLTAGE STANDARD《清洁器电压标准》.pdf

1、n V /“/ $!ka3 A-AS0749 12 MAY 1987 e COPME IC TAL ITEM DE SCRIPT ION CUKRENT-VOLTAGE STANDAKD The General Services Admiiiis tration lias authorized the use of this Commercial Item Desci- i p t ion. _ SCOPE. This Commercial Item Description (CID), describes a current-voltage standard for DC voltage r

2、atio accuracy. The current-voltage provides internal switching for calibrating the 100 inV, lV, 10V, 100V and 1000 volt ranges of a vo1t:ige calibrator to a 10 volt refcxrence source without changing the lead connecLionS. Tlie current-voltage s tandard is part of tlie F-15 AN/TSM-l31A Electrical Sta

3、ndards Set (ESS) and is rack-mounted in a transportable operation case. This CID represents a niinimiiiii rt!quircmerits for the F-15 ESS current- voltage standard in which only those nionufactiirrirs who meet or surpass the requirements are qualified per this CID. Equipment covered by this CID may

4、be commercially available equipment niodified to the extent necessary to meet the following description. The equipment shall be type 111, class 5, style F and color K in accordaiicc witli ?lTL-T-?8800. APPLlCA3LE DOCUIIENTS . I_ SPECIFICATIONS. The following spxcification Eornis a part o this CID to

5、 the extent specified herein. Unless otht:rvi:;c specified, tlir issues of these docu- ments shall be those listed in the issue OC the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation. This CID makes provisions Eor ttic bid sainpl

6、c testing iii accord- ance with FIIL-T-28800, paragraph 4.7. SPECIFICATIONS MILITAKY MIL-T-28800 Test Equipmcnt For use with Electrical and Electronic Equipment , Gcncral Speci Eication for. (Copies of specif icacion required by contractors in connection witti specific acquisition functions should b

7、c obtained from tlie contracting activity or as directed by the contracting activity. OKDER OP PRECEDENCE. In the event of a conflict between the text o this CID and the references cited herein (except for associated detail specifications, specification sheets or MS standards), the text of this CID

8、shall take prece- dence. Nothing in this CID, Iiowever, shall supersede applicable laws and regulations unless a speciEic exemption has been obtained. SALIENT CHARACTERISTICS. accuracies, limits, and speciEications herein. The equipment shall be capable o operation within the FSC 6625 DISTRIUUTION S

9、TATEMENT A. Approved for public release; distribution is unlimited. ITHICDOCUMENTCONTAINSS. : Licensed by Information Handling ServicesA-A50749 b Y 1, SAFETY. The equipment shall be UL (Underwriters Laboratories) listed and approved and shall comply with the type III safety requirements of MIL-T-288

10、00. 2. PERFORMANCE CHARACTERISTICS. The following electrical specifications are minimum requirements I a. MT10 RANGE. 1O:l and 1OO:l. b. RATIO ACCURACY. self-calibration temperature (between 18OC aiid 28G) for up to 8 hours following self-calibration. For temperature variation of less than floc from

11、 the INPUT OUTPUT NULL RANGE VOLTAGE UNCERTAINTY ACCURACY 10: 1 l0OV 100: 1 1ooov +0.5 microvolt +1.0 microvolt - 0.2 ppm 0.5 ppm - O C. TEMPERATURE COEFFICIENT. Less than or equal to +1 ppm per C from self calibration temperature over the range of lgC to 28OC. d. INPUT RESISTANCE. 1O:l ratio: 380 K

12、 ohms +1% 10r):l ratio: 2 M ohms - +1%. Divider is 4 M ohms; Driven Guard is 4 M ohms; total is e. MAXIMUM INPUT VOLTAGE, 200 volts for the 10:1 ratio and 11OOV for the 1OO:l ratio. f. POWER COEFFICIENT. Less than or equal to 0.05 ppm of output with 1OOV applied for 1O:l ratio and less than or equal

13、 to 0.3 ppm of output with 1OOOV applied for 1OO:l ratio. g. TEMPEltATURE. OC to 50C operating. h. RELATIVE HUMIDITY.o Less than or equal to 75% to 40C, less than or equal to 45% to 50 C non-condensing. i, E. je WEIGHT. Not to exceed 50 lbs. Not to exceed 7 inches H X 8.69 inches W X 24 inches D. 3.

14、 COlPATIBILITY. This equipment shall be mechanically, electrically and physically compatible with other equipment and accessories of the ESS as the ESC is designed as a measurement entity. The current-voltage standard shall be capable of rack mounting in a standard 19 inch rack. The current-voltage

15、standard shall occupy a vertical rack height not to exceed 7 inches. 4. MANUALS, The manufacturer shall furnish one copy of instruction manuals for each instrument in this equipment group, following: Operating Instructions, Theory of Operation, Circuit Description, Schematics , Trouble Shooting Tree

16、s, Pictorial Layouts , Parts Locator Diagrams, It shall contain at least the 2 Licensed by Information Handling ServicesA-A-50747 bb I 7959474 0030377 3 i MANUFACTURER MODEL John Fluke Mfg Co., Inc. 7528 A- A- 5 O 7 4 9 List of Replaceable Parts, Part Numbers, and Manufacturers. In addition, all int

17、ernal major components, assemblies, subassemblies, and plug-ins, shall be permanently labeled in accordance with manuals, diagrams and schematics furnished. 5. CALIBRATION INTERVAL. After calibration, the equipment shall meet each performance requirement within the tolerances specified for a period

18、of at least 9 months, based on an operating time of 1500 hours. CERTIFICATION. The contractor shall certify that the product offered meets the salient characteristics of this description, and that the product conforms to the producers olmdrawings, specifications, standards, and quality assurance pra

19、ctices, and is the same product offered for sale in the commercial market- place. Small businesses that cannot offer products with established commercial market acceptability, may compete by submission of bid samples. (The Govern- ment reserves the rights to require proof of such conformance before

20、first delivery and thereafter as may be otherwise provided for under the provisions of the contract. PACKAGING, PACKING AND MARKING. normal commercial practices and packed to assure acceptance by common carrier and provide product protection against loss and damage during multiple ship- ments, handl

21、ing and storage. with national motor freight classification and uniform freight classification. Shipping containers shall be marked as specified in the contract or order. KNOWN ACCEPTABLE PRODUCTS. The following product(s) are known to meet the requirements of this CID. The items shall be packaged in accordancc3 with The shipping container shall be in compliance NSN - 6625-01-175-1192 Custodian: Air Force - 99 Navy -EC DLA - ES Rev iew ing ac t iv i t y : Army - CR Preparing activity : Air Force - 82 (Project 6625-F851) 3 o Licensed by Information Handling Services