1、 MIL-F-2700lA 61 m 777770b 0071362 T m MIL-Y-29001A(MC) - 10 May 1974 SUPERSEDING 11 January 1974 MIL-F-29001(MC) I IILITARY SPECIFICATION FREQUENCY CONVERTER: SOLID STATE, 12.5 KVA (lOKW),WITH TRANSIT COVER This specification is approved for use by all Departments and Agencies i. SCOPE . of the Dep
2、artment of Defense. I I *1.1 This specification covers the requirements for one type portable, solid state, parallelable 12.5 kilovoltampere (kVN frequency converter, with a transit cover. 2. APPLICABLE DOCUMENTS . 2.1 The following documents of the issue in effect on the date of invitation for bids
3、 or request for proposal form a part of the specification to the extent specified herein. SPECIFICATIONS MILITARY MIL-P-15024 - Plate, Tags And Bands For Identification Of MIL-E- i6400 - Electronic Equipment, Naval Ship And Shore, MIL-E- 17555 - Electronic And Electrical Equipment, Accessories, MIL-
4、T-21200 - Test Equipment For Use With Electronic And MIL-H-46855 - Human Engineering Requirements For Military Equipment. General Specification (Navy). And Repair Parts, Packaging And Packing Of. Electrical Equipment, General Specification For. Systems, Equipment And Facilities. STANDARDS FEDERAL FE
5、D-STD-595 - Colors. MILITARY MIL-STD- 108 - Definition.Of, And Basic Requirement For Enclosure MIL-STD- 167 - Mechanical Vibrations Of Shipboard Equipment. MIL-STD-454 - Standard General Requirement For Electronic For Electric And Electronic Equipment. Equipment. P /-c-7, 7 THIS DOCUMENT CONTAINS PA
6、GES. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-2700LA 61 m 7797706 0071363 L m MIL-STD-461 - Electromagnetic Interference Characteristics, Requirements For Equipment. MIL - STD - 46 2 - Electromagnetic Interference Characteristics, Measur
7、ement Of, MIL-STD-463 - Definition And System Of Units, Electromagnetic Interference Technology. MIL- STD- 705 - Generator Sets, Engine-Driven, Methods Of Tests And Instructions. MIL-STD-810 - Environmental Test Methods. MIL-STD- 1332 - Definitions Of Tactical, Prime, Precise, And Utility Terminolog
8、ies For Classification Of The DOD Mobile Electric Power Engine Generator Set Family. (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. REQUIRE
9、MENTS 3.1 First article. Unless otherwise specified (see 6.21, 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 s
10、pecification. First article is defined as a frequency converter which will be identical to the production units which the contractor will subsequently produce in fulfillment of the contract. first articles by the activity concerned shall not relieve the contractor of the responsibility to supply fre
11、quency converters conforming to this specification, 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 contract, p
12、rovided they have been completely refurbished. Approval of the Examination and testing shall be as specified herein. 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 allcases, general material requ
13、irements as to nonflammability, fungus resistance, and nontoxicity 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
14、fulfill the design objective because of size, weight, performance, 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 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license
15、from IHS-,-,-MIL-F-29003A bL 999990b 0093364 3 m MIL-F-290Ol(MC) 3.2.2 Mechanical 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 rot
16、ate, oscillate or cam against others are employed, and best choice of materials 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, p
17、rotective paints or sprays or other methods. Where 3.2.3 Moisture and fungus 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 prior to their use in the frequency converter sd tha
18、t overall spraying of the frequency converter is not necessary. 3.2.4 Transistor and semiconductor complement. Ail 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
19、and construction. The solid state frequency converter described herein shall be capable of converting tactical utility class 2, 60 hertz (Hz), 120/208 alternating current (ac) volts 55 percent, 3-phase power as defined in MIL-STD-1332, to 400-Hz power as specified herein. 3.3.1 Skid base. The freque
20、ncy converter shall be mounted on a skid base. or A373 or of aluminum alloy, ASTM type 6061-T6. braced and reinforced by crossmembers to support the frequency converter. The skid base shall include a bottom sheet of the same thickness as the frequency converter housing. The bottom of the skid base s
21、hall present a smooth contour surface, and the crossmembers or components shall not be lower than the bottom sheet. The skid base shall extend beyond the housing with doors closed and beyond all protruding attachments. grounding stud for a No. 6 AWG solid wire shall be secured to the side of the ski
22、d base in proximity to the opening for the power supply cable. The skid base shall be constructed of steel conforming to ASTM A7 The skid base shall be A 3.3.1.1 Forklift openings. Openings shall be provided in the skid Each opening shall be not base to permit insertion of forklift tynes. less than
23、11 inches by 3 inches in size; openings shall be located so that the center of gravity of the frequency converter falls approximately midway between centers of the forklift openings. The openings shall be reinforced and equipped with guides so that the frequency converter will not be damaged if it i
24、s lifted by a forklift, the tynes of which do not extend completely through the base. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I l I MIL-F-24001A 61 m 9999306 0071365 5 3.3.2 Cover, The frequency converter shall be provided with a transit co
25、ver which shall provide protection for the equipment against .deterioration from all environmental conditions that might be encountered during storage, shipment and unlimited use. watertight in accordance with MIL-STD-108. include the following: The transit cover shall be The cover design shall (a)
26、A tight-fitting protective enclosure when the cover has been placed in position and clamped to the skid base. (b) The skid base 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 cov
27、er, (d) Geometric configuration which will permit stacking without harm to the cover or its contents, (e) Pressure relief valves of the manual or automatic type shall be provided with each, or on each, transit cover. (f) Capability of meeting the drop test specified herein. (g) Minimum volume and we
28、ight (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 meet the requirements specified herein. When approved by the procuring activity, other material
29、s 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. Covers, other thap. all-metal types, shall be provided with reinforced corners, (j) Cover latches shall be placed to prevent the cover from be
30、ing fastened in the wrong position. (k) Covers shall be provided with quick opening, spring loaded or pull down tension type latches. The main portion of the latch shall be on the cover body and the smeller portion (hook) on the skid base. The latch shall be protected from damage by contact with oth
31、er objects. Spring wire shall not be used as a mechanical hold-down device. Latches shell not interfere with covet- removal. I 4 o Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-2700lA bL 7777706 009L3bb 7 (1) The cover handles shall be- hinge
32、d metal, having a clearance from the cover sufficient to pass a block 1-7/8 inches by 4-3/8 inches in a direction orthogonal 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
33、 and 1/2 inch 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 cover, it must be recessed to facilitate stacking. cover (when loaded) shall be such that the load distribution-pe
34、r handle shall not exceed 100 pounds and shall be as evenly distributed as practicable for easy handling. center of gravity of the equipment to ensure carrying stability. Handles shall stop open at 90, and shall be returned (m) The number and location of handles for each rectangular transit: I Handl
35、es shall be installed sufficiently above the (n) The cover shall have provisions for the stowage of all accessories and technical manual(s). 3.3.3 Controls. The frequency converter shall be provided with.the necessary controls for operation. In addition, the following specific controls shall be prov
36、ided: (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 phases of output voltage, and the remaining position shall be utilized to turn the meter off, (b) A voltmeter shall be provided on the
37、 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. (cl A frequency meter shall be provided on the front panel to indicate the frequency of the output voltage. (d) A time-totalizing met
38、er 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 one shall be used to turn on the output of the frequency converter. *3.3. terminal “LOI1 shall be neutral. be arranged in a line in seq
39、uence from left to right or from top down, slotted type designed to receive the stripped end of cables, with clamping o$ the cable ends to be accomplished by a captive hexagon They shall be located They shall be conspicuously marked They shall ItL2), 1L31f, and “LOI1 when reading Terminal studs shal
40、l be of the . 6 -. 13 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-29001(MC) 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 tur
41、n in their mountings when the hexagon nuts are tightened. or bronze and properly sized in accordance with the output power of the frequency converter. Terminals shall be The ter:ninals shall be made of brass 3.3.8 Noise. The acoustic noise generated by the frequency converter under all operating con
42、ditions shall not exceed the values specified in Table II of MIL-T-21200. 3.3.9 Human engineering considerations. The design of the frequency converter shall incorporate good human engineering in accordance with I MLL-H-46855, 3.310 Interchmgeability. The components and accessories of this frequency
43、 converter shall conform to the interchangeability requirements specified in MI1 -E- 16400. 3.4 Reliability. Reliability shall receive major emphasis during the design, fabrication, and construction of the frequency converter. This emphasis shall be reflected in the assembly processes and the determ
44、ination 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. Abrasion of painted surfaces is allowable. shall not be degrad.ed. the freque
45、ncy converter is capable of calculated mean time between failure (MTBF) of not less than 2,000 hours. to perform the lift! test as detailed in 4.5. shall have a minimum operating life of 5,000 hours. other than necessary replacement of parts, it shall require only servicing as prescribed by the manu
46、facturer and approved by the procuring activity. The first article, production, 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, with transit cov
47、er shall withstand, without damage, rough handling which would normally be encountered during truck or trailer transportation. 7 ” i- o Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-VIL-F-29001A b1 9999906 0091369 2 W “3.6 Performance. The frequenc
48、y converter shall meet the performance requirements as defined for electrical utility, class 2, equipment of MIL-STD-1332, except as follows: (a) The overall input/output efficiency at rated load shall not be less than 70 percent. (b) parameters: The frequency converter shall provide power within th
49、e following Output Voltage . MIL-STD-1332, Class 2, Tactical Utility Number of Phases 3 Type Connection . WYE Continuous Power Output Rating . 12.5 kVA Output Frequency 400 Hz Frequency Regulation MIL-STD-1332, Class 1, Tactical Precise Voltage Regulation MIL-STD-1332, Class 2, Tactical Utility Single Harmonic No single harmonic shall be greater than 2 percent Total Harmonic . Total harmonic shall be less than 3 percent Deviation Factor . Less than 5 p
