1、MIL-F-29008 bL m 9999906 009L3LlO O m - 3-15-0q MIL-F-29000(MC) 27 September 1373 SUPERSEDING See Section 6. MILITARY SPECIFICATION FREQUENCY CONVERTER: SOLID STATE, 5 KVA, WITH TRANSIT CASE This specification is approved for use by all Departments and Agencies of the Department of Defense. i. SCOPE
2、 1.1 This specification covers the requirements for one type portable, solid state, parallelable 5-kilovoltampere (kVA) frequency converter, housed in a transit case. 2. APPLICABLE DOCUIENTS 2.1 The following documents of the issue in effect on the date of invitation for bids or request for proposal
3、 form a part of the specification to the extent specified herein. SPECIFICATIONS MILITARY MIL-P- 15024 MIL-E-16400 MIL-E- 17555 MIL-T- 21200 MIL-H-46855 STANDARDS FEDERAL FED-STD-595 MILITARY - Plate, Tags And Bands For Identification Of Electronic Equipment, Naval Ship And Shore, Equipment. - Gener
4、al Specification (Navy). - Electronic And Electrical Equipment, Accessories, And Repair Parts, Packaging And Packing Of. - Electrical Equipment,General Specification For. - Systems, Equipment And Facilities. Test Equipment For Use With Electronic And Human Engineering Requirements For Military - Col
5、ors. MIL-STD- 108 - Definition Of, And Basic Requirement For Enclosure MIL-STD- 167 - Mechanical Vibrations Of Shipboard Equipment. MIL-STJI-454 - Standard General Requirement For Electronic For Electric And Electronic Equipment. v Equ i pmen t. 1 Provided by IHSNot for ResaleNo reproduction or netw
6、orking permitted without license from IHS-,-,-MIL-F-27000 61 = 7777706 007L34L 2 MIL-STD-461 - Electromagnetic Interference Characteristics, Requirements For Equipment. MIL- STD- 46 2 - Electromagnetic Interference Characteristics, Measurement Of. MIL-STD-463 - Definition And System Of Units, Electr
7、omagnetic Interference Technology. MIL-STD-705 - Generator Sets, Engine-Driven, Methods Of Tests And Instructions, MIL- STD- 8 10 - Environmental Test Methods. MIL-STDp 1332 - Definitions Of Tactical, Prime, Precise, And Utility Terminologies For Classification Of The DOD Mobile Electric Power Engin
8、e Generator Set Family. I (Copies of specifications and standards required by contractors in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) 3. REQUIREMENTS 3.1 First article. Unless otherwise specified (see 6.
9、21, prior to submission of any complete production items for acceptance, the contractor shall furnish two first articles for testing under the direction and supervision of the cognizant Government inspector to determine conformance to this specification. First article is defined as a frequency conve
10、rter which will be identical to the production units which the contractor will subsequently produce in fulfillment of the contract. Approval of the first articles by the activity concerned shall not relieve the contractor of the responsibility to supply frequency converters conforming to this specif
11、ication. Examination and testing shall be as specified herein. Any changes or deviations of the production units from the first articles shall be subject to the approval of the contracting officer. articles may be included in the final shipment as part of the total quantity to be supplied under the
12、contract, provided they have been completely refurbished. The first 3.2 Parts and materials. In the selection of parts and materials, fulfillment of major design objectives shall be the prime consideration. In all cases, general material requirements as to nonflammability, fungus resistance, and non
13、toxicity as required by MIL-E-16400 must be met. doing so, the following factors shall govern. In 3.2.1 Electronic components. Parts and materials listed in MIL-E-16400 shall be given first consideration. accordance with MIL-E-16400 will not fulfill the design objective because of size, weight, perf
14、ormance, or other reasons, the use of other materials may take precedence, with the approval of the contracting officer. When use of parts or materials in c Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_ MIL-F-27000 61 9 7977706 007L392 m 3.2.2 Me
15、chanical components, MIL-E-16400 shall be complied with, whenever possible, without sacrifice of the design objectives of size, weight, performance, reliability and ease of maintenance. mechanical parts whose function is to rotate, oscillate or cam against others are employed, and best choice of mat
16、erials comprises materials other than those listed in MIL-E-16400, use of those materials may take precedence, with the approval of the contracting officer, provided that maximum life is achieved by use of lubricating agents, protective paints or sprays or other methods. Where 3.2.3 Moisture and fun
17、gus treatment. The frequency converters shall be fungusproofed by selection of parts and materials which are nonnutrient for fungus or by treatment of the-parts and materials priot to their use in the frequency converter so that overall spraying of the frequency converter is not necessary. 3.2.4 Tra
18、nsistor and semiconductor complement. All transistors and semiconductors used in the construction of the frequency converter shall be reported to the contracting officer by completion and submission of Form DD-816, 3.3 Design and construction. The solid state frequency converter described herein sha
19、ll be capable of converting tactical utility class 2, 60 hertz (Hz), 120/208 alternating current volts 215 percent, 3-phase power as defined in MIL-STD-1332, to 400-Hz power as specified herein. 3.3.1 Case. The frequency converter shall be provided with a transit case which shall provide protection
20、for the equipment against shock, vibration, and deterioration from all environmental conditions that might be encountered during storage, shipment and unlimited use, The transit case shall be watertight in accordance with MIL-STD-108. The case design shall include the following: (a) A tight-fitting
21、protective enclosure when the cover has been placed in position and clamped. (b) The case and cover shall make positive contact, thereby relieving loading of the gasket, except that necessary to effect a seal, (cl Only one orientation of the equipment in the case. (d) Geometric configuration which w
22、ill permit stacking without harm to the case or its contents. (e) Pressure relief valves of the manual or automatic type shall be provided with each, or on each, transit case. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-27000 61 m 7777706
23、 0073343 6 m (f) Capability of meeting the drop test specified herein. (8) Minimum volume and weight (loaded) compatible with the applicable requirements specified herein. (h) Construction of aluminum, plastic, or a three or more ply combination resin-bonded material which shall be strong enough to
24、meet the requirements specified herein. When approved by the procuring activity, other materials may be used where a reduction in weight, with no sacrifice in performance, can be obtained. (i) The corners shall be rounded with at least 1/4-inch radius. Cases, other than all-metal types, shall be pro
25、vided with reinforced corners. (j) The case shall have a detachable cover. Cover latches shall be placed to prevent the cover from being fastened in the wrong position. (k) Cases shall be provided with quick opening, spring loaded or pull down tension type latches, on the case body and the smaller p
26、ortion (hook) on the case cover. latch shall be protected from damage by contact with other objects, Spring wire shall not be used as a mechanical hold-down device. shall not interfere with cover removal. The main portion of the latch shall be The Latches (1) The case handles shall be hinged metal,
27、having a clearance from the case sufficient to pass a block 1-7/8 inches by 4-3/8 inches in a direction orthononal to this cross section, and having the edges rounded to 15/16 inch radius. The grip portion of the handles shall be of a nonmetallic material of at least 3-1/2 inches in length and 1/2 i
28、nch in diameter, closed to the sides by a spring loaded or retaining mechanism when not in use. Handles must be recessed or protected. If a handle is located on the top of the case, it must be recessed to facilitate stacking. Handles shall stop open at 90, and shall be returned (m) The number and lo
29、cation of handles for each rectangular transit case (when loaded) shall be such that the load distribution per handle shall not exceed 45 pounds and shall be as evenly distributed as practicable for easy handling. center of gravity of the equipment to ensure carrying stability. Handles shall be inst
30、alled sufficiently above the (n) The case shall have provisions, in its cover,for the stowage of all accessories and technical manual(s1. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-27000 61 m 7777706 0071399 A m 3.3.2 Controls. The frequ
31、enry converter shall be provided with the necessary controls for operation. In addition, the following specific controls shall be provided: (a) An ammeter shall be provided on the front panel. A four-position switch shall be provided to permit reading the current in each (individually) of the three
32、phases of output voltage, and the remaining position shall be utilized to turn the meter off, (b) A voltmeter shall be provided on the front panel. A four-position switch shall be provided to permit reading one phase of the input voltage and each (individually) of the three phases of output voltage.
33、 (cl A frequency meter shall be provided on the front panel to indicate the frequency of the output voltage. (d) A time-totalizing meter shall be provided on the front panel. (e) Two circuit breakers shall be provided, One shall be utilized to apply the input to the frequency converter, The second o
34、ne shall be used to turn on the output of the frequency converter. 3.3.3 Paralleling. The equipment shall be designed so that each frequency converter shall be capable -of being series paralleled with up to nine more identical frequency converters, in which case the output capacity shall be equal to
35、 the number of frequency converters times 5 kVA. 3.3.3.1 Paralleling cable. One paralleling cable shall be provided with each frequency converter. with caps shall be provided. One shall be male and the other female, The cable shall be 25 feet long. Connectors 3.3.3.2 Paralleling connectors, Two conn
36、ectors shall be provided on the front of each frequency converter. One connector shall be male and the other female. Protective caps will also be provided, 3.3.4 Fusinq. Fuses shall be kept to a minimum consistent with protection of various components within the frequency converter. Different fuses
37、may be used with alternating current and direct current components, if required. Fuses shall be of the extractorpost type and miniaturized in keeping with the size of the equipment. Fuses shall be readily available when the frequency converter is withdrawn from the case. 3.3.5 Circuitry. Circuitry s
38、hall be of solid state design and shall enable the frequency converter to meet all the requirements specified herein. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-29000 b1 = 77799Ob 0091345 T 3-3.6 Input and output. The frequency converter
39、 shall be equipped with the following input and output hardware. 3.3.6.1 1nput.hardware. Input hardware shall be provided as follows. 3.3.6.1-1 Input cable. The input cable shall be 75 feet in length. The stripped wires shall be The prime mover end shall be pig-tailed. encapsulated to prevent separa
40、tion of the wire strands, fit the slotted type terminals of the prime mover. converter end shall be provided with a connector and protective cap. The caps shall The frequency 3.3.6.1.2 Input connector. The frequency converter shall be equipped with an input connector and protective cap. with that of
41、 the input cable, The connector shall mate 3.3.6.2 Output hardware. Output hardware shall be provided as follows, 3.3.6.2.1 Output terminals. The frequency converter shall be equipped with four alternating current output terminals. to preclude injury to personnel. They shall be conspicuously marked
42、14L111, “L2“, “L3“, and “Lo“; terminal “Loii shall be neutral. be arranged in a line in sequence “Lli, iL2t1, “L311, and “LOIi when reading from left to right or from top down. Terminal studs shall be of the slotted type designed to receive the stripped end of cables, with clamping of the cable ends
43、 to be accomplished by a captive hexagon assembly threaded on the stud. Terminals shall be spaced to allow use of a box end wrench to tighten the hexagon nuts. rigidly mounted; studs shall not twist or turn in their mountings when the hexagon nuts are tightened. or bronze and properly sized in accor
44、dance with the output power of the frequency converter. They shall be located They shall Terminals shall be The terminals shall be made of brass 3.3.7 Noise. The acoustic noise generated by the frequency converter under all operating conditions shall not exceed the values specified in Table II of MI
45、L-T-21200. 3.3.8 Human engineering considerations. The design of the frequency converter shall incorporate good human engineering in accordance with MIL-H-46855. 3,3.9 Interchangeability. The components and accessories of this frequency converter shall conform to the interchangeability requirements
46、specified in MIL-E- 16400. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I MIL-F-27000 b3 = 7777906 0093346 3 m 3.4 Reliability. Reliability shall receive major emphasis during the design, fabrication, and construction of the frequency converter.
47、 This emphasis shall be reflected in the assembly processes and the determination of operational techniques. and sample items shall be subjected to the mechanical and electrical tests specified in Section 4. Mechanical wear shall be such that mechanical or functional performance is not affected. pai
48、nted surfaces is allowable. shall not be degraded. the frequency converter is capable of calculated mean time between failure (MTBF) of not less than 2,000 hours. to perform the life test as detailed in 4.5. shall have a minimum operating.life of 5,000 hours. other than necessary replacement of part
49、s, it shall require only servicing as prescribed by the manufacturer and approved by the procuring activity. The first article, production, Abrasion of Performance of the frequency converter The contractor is required to demonstrate that The contractor is required The frequency converter During this period, 3.5 Transportability. The frequency converter, in transit case, shall withstand, without damage, rough handling which would .normally be encountered during
