1、,* v1-Bl757/8D bl W 9999906 009q723 b m: .I, MIL-B-81757/8D - 3 May 1985 r SUPERSEDING 5 October 1984 MIL-B-81757/8C MILITARY SPECIFICATION SHEET BATTERY, STORAGE, AIRCRAFT, NICKEL-CADMIUM, 24 VOLTS, 20 AMPERE-HOUR (BB-434/A) This specification is approved for use by all Depart- ments and Agencies o
2、f the Department of Defense. The complete requirements for acquiring the battery assembly described herein shall consist of this document and the latest issue of specification MIL-B-81757. LATCHES NOT ALLOWED COVER7 ON THIS SIDE ,375 f. .O31 I -4 LATCHES LOCATE D AS 3.8125.031 1 I i I , CAUTION MARK
3、ING .875 2 .O31 I VENT 2 PLACES ;.l3Lc$2 SEE REO 3 .344 MAX R7 ,405 t .O15 ID MS 3509 SEE REO 17 LOCATI ONC OF POLARITY MARKING III I .O62 f .O62 A 7.688L.062 I TE t SEE REO I 7.7502.062 Figure 1, Battery assembly. P/N M81757/8-4 and M81757/8-5 SHOWN O 14 FSC 6140 Page 1 of 6 THIS DOCUMENT CONTAINS
4、PAGES Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- flIL-B-1757/8D 61 9999906 0094924 8 - - MIL-B-81757/8D Q WTIONAL LOCATION FOR I 7 I CAUTION MARKING 4 STRIKES LOCATED AS SHOWN I L.875+ .O31 - 2.75oto.031 HOLD-DOWN HOOKS ARE TO BE UNPAINTED (TW)
5、 I Figure 2. Cover. R4D PROJECTION-WHEN COVER IS SECURED,ONE PROJECTION WILL BE IN CONTACT WITH EACH VENTED FILLER CAP AND SHALL NOT HINDER THE PROPER RELEASE OF GASES. -.O35 MIN. MATERIAL: ELASTOMER (HOLD-DOWN PAD) Figure 3. Cover hold-downpad. * 2 Provided by IHSNot for ResaleNo reproduction or ne
6、tworking permitted without license from IHS-,-,-I flIL-B-81757/BD 61 9999906 0094925 T m MIL-B-81757/8D REFERENCE LETTER A B C E CONNECTOR STRAP ARRANGEMENT BATTERY ASSEMBLY P/N M81757/8-4, /8-5 3 STRAP PART NO. DESCRIPTION M8 1 75 7 / 3-5 Connector, Strap M81757/3-6 Connector, Strap M81757/3-7 Conn
7、ector, Strap M81757/5-1 Connector, Curved F G H M8 175 7 /5-2 Connector, Curved 1 M81757/3-9 Connector, Strap 1 If8 1 7 5 7 / 4-3 Connector, Tab 2 M81757/1-4 CELL ASSE M0 LY (i9 REQUIRED) WELDED PARTIT IONS BATTERY TEMPERATURE SENSOR (SEE REQ 6) - M81757/1-76 WASHER (38 OPTIONAL) M81757/1-8B BELLEVI
8、LLE SPRING (38 REQUIRED) Y 81 7571 I - I O NO. 10-32 HEX SHEAR HEAD BOLT (38 REQUIRED) (M8175718-5 ONLY) AN3C3A NO. 10-32 TERMINAL SCREW (38 REQUIRED) ( M81757/8-4 ONLY 1 - M81757/1-IO NO. 10-32 HEX SHEAR HEAD BOLT (2 REQUIRED - M81757/8-5 ONLY) D M81757/1-78 WASHER (2 OPTIONAL) M81757/1-8B BELLEVIL
9、LE SPRING (2 REQUIRED) AN3C3A NO. 10-32 HEX HEAD BOLT (M8175?/8-4 ONLY) O Figure 4. Ceii arrangement, 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-B-BL757/AD bL m 9999906 009926 L II MIL-B-81757/8D REQUIREMENTS: 1. 2 3, 4. 5. 6. 7. 8. 9. 10.
10、 11. 12. 13. 14. 5. The receptacle terminal block shall be 0.866 + 0.015 from the centerline of the contact pins to the top surTace of the terminal block. The receptacle will be so located that the top of the terminal block and the cell terminal contact surfaces are in the same plane. Receptacle ter
11、minal block shall be screw size 10-32. Receptacle shall conform to MS3509-28. All dimensions are prior to epoxy coating except: Overall length - 9,998 max., overall width - 10,662 max., and overall height - 8.812 max . Method of mounting latches and strikes shall be optional. shall conform to Corbin
12、 Cabinet Lock Division, American Hardware, Item Number 15834, or Nielson Latch Number C-833314-2-SS-302. They Spacers if used shall be polyethylene sheet per ASTM STD D4066-82, Comp. A, Type i and Type III, minimum 0,015 inch thick, color natural. Latches and strikes shall not be epoxy coated. A sen
13、sor (thermocouple or thermistor), when required shall be located as shown for the purpose of monitoring battery temperature during testing to this specification. in the approximate center of the cell containers widest outer surface (equidistant from the top and bottom and from side to side). The sen
14、sor shall be positioned The battery voltage shall be 24 volts (nominal). The battery weight shall be 55 pounds maximum when filled, The battery shall contain 19 cells. The rated capacity at ZC rate shall be 20 A.H./l Hr/80F/18.0V. Length and width of cover pad and spacer shall conform to the inside
15、dimensions of the applicable cover. The length, width, and thickness of cover pad projections shall provide sufficient pressure on the vented filler caps to hold down the battery cells during vibration. The quantity and location of cover projection pads shall be deter- mined by the vented filler cap
16、s. The base dimensions of the container shall remain within tolerance for a distance of 2.8 inches up from the bottom. The M81757/8-4 battery is not for Navy use. . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-16. The battery identification on the
17、 M81757/8-4 and M81757/8-5 battery shall indicate the correct supersession data as indicated in Note 2. 17. The M81757/8-5 battery shall incorporate M81757/1-20 bolts to secure the cell interconnecting strap, thereby preventing cell removal. The “CAUTION“ label on the M81757/8-5 battery shall contai
18、n the following additional information: not to be removed.“ 18. “The cells in this battery are 19. The cell vented filler cap shall be in accordance with MIL-B-81757/2. NOTES : 1. All dimensions are in inches, unless otherwise specified. 2. Supersession data: This specification sheet supersedes MS18
19、045, MS90322, MS90365, MS24497 and MIL-B-81757 part numbers as follows, when a product has been qualified for each MIL-B-81757 part number respectively. Part Number M81757/8-4 MS24497-3, MS24497-5, M81757/8-2 M81757/8-5 (for M81757/8-2, MS18045-45, MS18045-49, Navy use only) MS90365-1, MS9036.5-2, M
20、S90321-68WY MS90321-77, MS90321-78W, M81757/8-3 Part Number MS18045-45 MSl8045-49 MS24497-3 MS24497-5 MS90322-68W MS90321-77W MS90321-78W MS9036.5-1 MS 9 O 3 6 5- 2 M81757/8-2 M8 1757 /8-3 M81757/8-2 Superseded By M81757/8-5 M81757/8-5 M81757/8-4 M8 1757/8-4 M8 1 7 5 7 / 8-5 M81757/8-5 M81757/8-5 M8
21、1757/8-5 M81757/8-5 M81757/8;5 (for Navy use) M81757/8-5 (for Navy use) M81757/8-4 International Standardization. Certain provisions of this specification sheet are the subject of International Standardization Agreement (ASCC AIR STD 12/15 and STANAG 3514L). When revision or cancellation of this spe
22、cification sheet is proposed which will affect or violate the inter- national agreement concerned, the preparing activity will take appropriate action through international standardization channels, including depart- ment standardization offices, if required. Provided by IHSNot for ResaleNo reproduc
23、tion or networking permitted without license from IHS-,-,-I NIL-B-1757/8D bL 7779706 0074728 5 -! Custodians: Navy - AS Air Force - I1 Amy - ER Preparhg Activity: Navy - AS (Pro j ect No. 6 140-06 14) Review Activities : Air Force - 99 Amy - AV User Activity: Coast Guard - CG NOTICE: Review/user inf
24、ormation is current as of the date of this document. For future coordination of changes to this document, draft circulation should be based on the information in the current DoDISS. *us. GOVERNMENT PRINTING OFFICE: IS-SOS-/PZLS 6 y=- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
