NAVY MIL-I-3374 A-1955 INSULATION CLOTH AND TAPE ELECTRICAL VARNISHED CAMBRIC《途漆的细薄布带电绝缘布和带》.pdf

1、. MILI-3374A 25 JULY 1955 SUPERSEDING 18 JANUARY 1951 MIL-1-3314 MILiTARY SPECIFICATION INSULATION CLOTH AND TAPE, ELECTRICAL, VARNISHED CAMBRIC 8 This specification has been approved bu iho Department of Dofenao i for we of tho Dsparttneiits a/ the Army, the Navu, niid the Air Fores. ! 1. SCOPE UU-

2、T-1 li CCC-T-191 1.1 Scope.-This specification covers insu- ., LLL-13-43 1 lation intended for use as cable insulation, coil wrappers, and for insulating bus bars, LLI;-I3-G3G joints and terminals of electric wires and cables winding insulation and other electrical P P r-Sri apparatus connection. .

3、1.2 Classification.-Insulation shall be of the following types and classes, as specified . P-B-601 (see 6.2) : PIl?-B-O?O JA IV-I- 103 ILITARY * Type 1430th Class l-Bias cut Class %Straight cut Type II-Tape Class l-Bias cut Class %-Straight cut 2. APPLICABLE DOCUMENTS 2.1 The following specification

4、s and stand- JAN-P-100 ards, of the issue in effect on date of invita- hl IL-B-107 .i . tion for bids, f0rm.a part of this specifica- tion : :. JAN-P-108 SPECIPICATIONS FEDER.iL NN-n-591 -IhC, Fibdod, WOO Fihr Corrugated (for Domestic Shipment). -Boxes, Fiber, Solid, (for Domestic Shipment). -Bops,

5、Folding, Papor- bond. -BOXCB, Wood-Cleated, Ply- WOd, -oxos, Bot-Up, Ptqmlwnrd, (Kraft) -Textile lest Wood-Cleatcd i Solitl Fibcrbotirtl. -1acknying and Pncking foE vcrscus Siipmcnt- Uoxcs; Wad, Nnilcd. - -Boxes, Wood, Wirehund (Ovcrscns Typ). -Pirckaging nritl Puckiiig for Ovcrwiie Sliipmont- IJoxc

6、, Fihrbomi (V- IIourd nri W-!3omI), Exterior and Interior, -Pwknging nnd Pncking for 0vcm:is Stiipmcnt- ntrrricr-Atterict Is, Wntcrproof, Plcxiblc. -Adlicsive, Wntcr-Resistant, Watcrproof Bnrricr Ma- tcrinl. Licensed by Information Handling ServiceshIIL-l3-10377 -BOXCE, Wootl - Cleated, Vcnccr, Pape

7、r vcrlnid, MIL-L-10347 -Lincra, Cnse, Wnf crproof. STANDARDS i LlTAltY MIIrSTI)-lOfi-Sampling Procctlures and Tables for Inapcction tiy Attributcs, MIiATD-l!8-Mnrking for Shipmcnt and Sf orage. (Copice o2 specications, standards, drawings, and publicatione required by contractore in connection . wit

8、h spccific procuremcnt functions should be ob- tained from the procuring agency or ae directed by the contracting occr.) 2,2 Otlicr pulAications.-The following documents form a part of this specification. Unless otherwise indicated the issue in effect on date of invitation for bids shall apply. ABIE

9、RICAN SOCIETY FOR TESTING MATERIALS Methods of Test for Varnished (Application for copica should bo addrcssod to tho Americnn Sodcty far Testiiig Materials, 1010 Race Strect, Philadelphia 3, Pa,) Cloths and Tapes (D295) , CONSOLIDATED CLASSIFICATION COMMITTEE Consolidated Breight Classification (App

10、lication for copios should bo nddrcsscd to the Consolidatod Classification Coinmittce, 202 Chicngo Union Station, Chicago O, III,) 3, REQUIREMENTS 3,1 Fabric,-The fabric shall be a closely and uniformly yoven cotton material free from unsightly defects such as dirt, knots, . lumps, rind irregularity

11、 of twist, When determiiied as specied in 4.4,3,4, the mini- mum thread count per inch shnll be GO for the warp and 65 for the filler. 3.2 Varniah coaifng.-The highest grade of baking varnish shall be used. The varnish shall be such that the finished material shall , be yellow in color, The number o

12、f coats used shall be such that the finished material meets all dimensional and performance require- mentri of thie specification, The varnish coat- fng shall adhere to the fabric and shall not Rules. . crack when the cloth or tape is doubled upon itself (zero radius) (see 4.4.4). The varnish film s

13、liall not crack wheii bent after aging for 150 hours nt 128” the upper or movable member shall consist of a foot having a flat steel face $ therefore, the film shall be removed mechanically. 4.4.4 FZexibility.-Several samples shall be selected and doubled back upon themselves (zero radius) at room t

14、emperature to deter- . mine by means of the unaided eye whether such severe bending will cause the varnish films to crack. I 4.4.5 Breaking strength.- 4.4.5, The breaking strength shall be determined on a pendulum typo testing ma- cliino, Tho machino ehnll profornbly Io powcr driven and have n capac

15、ity not to exceed 250 pounds, It shall be graduated to read 1/2 pound or less per scale division, b Licensed by Information Handling Services4.4,5.2 Specimena cut from the full width cloth or from tapei3 over 1 inch in width shall be 1 inch in width and not less than 12 inches in length, For tape ha

16、ving a nominal width of 1 inch or less, the specimens shall be of the original width and not less than 12 inches In lcnp!?. 4,4.5,3 In the case of straight-cut clotha, Ave specimeiis shall be cut in the direction of the warp threads and five in the direction of the filler threade, In the case of bia

17、s-cut cloths and tapes, Ave specimons shall be cut in the direction o the length, The clearance distance between jaws shall be 6 inches, 4,4,5.4 The specimens shall be conditioned. for 96 hours at a temperature of 23OC. (73A“F.) A 1.l0CI (12“F,) and 60 per- ceitt i folds, seams. and laps sealed with

18、 water-resistant adhesive conforming to grade B of Specification MIGA-140 with the type and class a6 applicable. 5.1.2.2 Tape.-The rolls of tape shall be individually wrapped in kraft paper, foil or other protective wraps or individually pack- aged in commercial folding cartons or set-up boxes. Twen

19、ty unit packages of tape shall bz packaged in a foldixg carton, set-up box, or fiberbonrd box conforming to Spccifica- tions PPP-B-566, PPP-B-676, LLGB-631 or LLL-B-636, respectively. The gross weight of the folding cartons or set-up boxes shall not exceed 6 pounds. Alternatively, twenty of the indi

20、vidually packaged rolls of tape may be overwrapped in 30-pound basis weight kraft paper and secured with kraft tape. Kraft paper rind kraft tape shall con- form to Specifications UU-P-268 and UU- T-111, respectively, 5.2 Packing.- 5.2.1 For domestic shipment, immedata use.-The cloth rolla and tape s

21、hall be packed to insure carrier acceptance andaafo delivery to destination at the lowest applicable rate. Containers shall comply with the Consoli- dated Freight Classification Rules or other carrier regulations applicable to the mode of transportation. 5.2.2 For domestic shipment and stomge. -Unle

22、ss otherwise specified in the contract or order, tape and cloth rolls, packaged aa specified in 6.1.2, shall be packed in wood- 5S.2 For domestic shipnzent and storage o . or overseas shipment,- 5.1.2.1 Cloth rolls.-Cloth rolls shall be in- cleated fiberboard, nailed wood, wirebound dividually wrapp

23、ed in 30-pound basis weight wood, wood-cleated plywood or wood-cleated kraft paper conforming to Specification veneer paper overlaid boxea conforming to UU-P-268 and securely _ taped with 234 inch Specification NN-B-691, NN-3-621, NN- Licensed by Information Handling ServicesI B-631, PPP-Ba01 (domes

24、tic type) or MIL- B-10377 (domestic type) # respectively, or in corrugated or solid fiber boxes conforming to tho special requiremonta of Specification LLLB-GSl or LLIr-E-636. Gross weight of wood or wood-clcated shipping containers shall not exceed 200 pounds. 5,2,3 For .overseas .shipment, - Unles

25、s otherwise spccied in the contract or order, tape and cloth rolls, packaged as specified in 6.1.2, shall be packed in wood-cleated solid fiberboard, nailed wood, wi2ebound wood, wood-cleated veneer paper overlaid, wood- cleated plywood or fiberboard boxes conform- ing to Specificaticln JAN-P-103, J

26、AN-P- 106, MIL-B-107, MIL-B-10377 (ovcrseas type), PPP-B-601 (overseas type) or JAN- . P-108, (exterior grade), respectively. Ship- ping containers shall be provided with a sealed waterproof case liner conforming to Spccification MILL10547 when cloth rolls nre.pncknged as spegified in 0.1,2,1 and ta

27、pe is Packaged -as specifie in 6.1.2,2, Cloth rolls packaged as specified in 6.1.2.1.1 shall be packed in the aame typa containers without a case liner, Gross weight of wood and woo- cleated shipping coiitiiiiiers shall not exceed 200 pOUlld8I 5.3 Murking,-In addition to any special marking required

28、 in the contract order, marking of the Imkagcs and shipping con- tnincrs shall be iii accordance with Standard M IL-STD-129, 6, NOTES 6.1 Intcnclcd um,-Type I, class 2 and Type II, class 1 ineulation, covered by this Cartodianit Artny4lgnal (orpa Nnvy-Bureau of Ship Alr Force thber intcmtr Army-EOQT

29、 Navy-Or. flIL-I-3374A 59 9999906 0008743 3 . specification, are intended for repair and maintenance. Type I, class 1 and Type II, class 2 insulations are intended to be utilized ished products, and should not bc ordered as n stock item. 6.2 Ordering data.-Procurement docu- ments should specify the

30、following: (a) Title, number, and date of this spec- (b) Type and class required (see 1.2). ification, (d) Width of tape (see 3.4.2,Z). Patc.nt noilce.-When Government drqwing ficationa, or other duta aro used for nny othor than in coiinoction with a deinitcly in any way supplied the said drawings, spccificntio or other data is not to be regarded by implicrition Xerwise as in any manner licensing the 1. tx h- any other person or corporation, or conveying rights or pcrmission to manufacture, use, or soll 0 Licensed by Information Handling Services