1、AEROSPACE STANDARD CABLE ASSEMBLY, EXTERNAL ELECTRIC POWER,AIRCRAFT, SINGLE-JACKETED 270 VDC, 90 KW AS7974/5Copyright 2010 SAE International All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mecha
2、nical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-4970 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org ISSUED 2010-01THIRD AN
3、GLE PROJECTION CUSTODIAN: AE-8/AE-8A FEDERAL SUPPLY CLASS 6150 AS7974/5SHEET 1 OF 3PROCUREMENT SPECIFICATION: 7974 SAE Technical Standards Board Rules provide that: “This report ispublishedby SAE toadvance thestate of technicalandengineering sciences. Theuse ofthis report is entirely voluntary, andi
4、ts applicability and suitability forany particular use,including any patent infringement arising therefrom, isthe soleresponsibilityofthe user.”SAE reviews eachtechnicalreport at least every five years at which time itmay bereaffirmed, revised, orcancelled. SAE invites yourwrittencomments andsuggest
5、ions. SAE values your input. To provide feedbackon this Technical Report, please visit http:/www.sae.org/technical/standards/AS7974/5RATIONALEESTABLISH A 270 VOLT CABLE ASSEMBLY STANDARD FOR MILITARY AND COMMERCIAL APPLICATIONS NOTICE THE REQUIREMENTS FOR PROCURING THE CABLE ASSEMBLIES DESCRIBED HER
6、EIN SHALL CONSIST OF THIS SPECIFICATION AND THE LATEST ISSUE OF: SAE AS7974. CABLE DIAGRAM WIRE DIAGRAM FIGURE 1- CABLE ASSEMBLY Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AEROSPACE STANDARD AS7
7、974/5SHEET 2 OF 3CABLE ASSEMBLY, EXTERNAL ELECTRIC POWER, AIRCRAFT, SINGLE-JACKETED 270 VDC, 90 KW REQUIREMENTS: 1. QUALIFICATION AND QUALITY CONFORMANCE QUALIFICATION REQUIRED IN ACCORDANCE WITH AS7974. VOLTAGE DROP WITHOUT SALT SPRAY IS REQUIRED FOR QUALITY CONFORMANCE. A SPECIFIC DETAILED TEST ME
8、THOD MUST BE SUPPLIED TO THE QUALIFYING ACTIVITY FOR APPROVAL, DESCRIBING HOW THE VOLTAGE DROP TEST WILL BE PERFORMED NONDESTRUCTIVELY AS A QUALITY CONFORMANCE TEST ON 100% OF CABLE ASSEMBLIES PRODUCED. VOLTAGE DROPS SHALL NOT EXCEED VALUES SPECIFIED IN TABLE III OF AS7974. 2. DESIGN & CONSTRUCTION
9、DIMENSIONS ARE IN INCHES, UNLESS OTHERWISE SPECIFIED TOLERANCE IS 0.X= O.25, 0.XX= 00.76, 0.XXX= 0.254, INCHES AND ANGLES ARE 2 DEGREES. CABLE LENGTH (L) IS SPECIFIED IN TABLE 2. PLUG BODY CONFIGURATION IS OPTIONAL, BUT SHALL BE FULLY MOLDED TO THE CABLE. CABLE SHALL BE ACCORDANCE WITH AS5756/7. MAT
10、ERIALS ARE IN ACCORDANCE WITH AS7974. 3. IDENTIFICATION MARKING PLUG MARKING SHALL INCLUDE MANUFACTURE NAME, DATE CODE, CAGE CODE, AND PART NUMBER MOLDED OR HEAT IMPRESSED (SEE FIGURE 1 NOTE ). IF A MANUFACTURER SYMBOL IS USED IT SHALL BE REGISTER IN SAE AIR1351. POWER INPUT WIRES SHALL BE TERMINATE
11、D WITH QUALIFIED AS7928 TERMINALS AS SHOWN IN FIGURE 1. POWER CONTACTS SHALL BE CRIMPED WITH QUALIFIED AS5259/1 TOOL OR EQUIVALENT. BAND TENSILE STRENGTH IS NOT REQUIRED. WIRE TERMINATIONS SHALL BE IN ACCORDANCE WITH TABLE 1. TABLE 1- WIRE TERMINATION REQUIREMENTS PLUG CONTACT WIRE TERMINATION DESIG
12、NATION NEGATIVE PHASE(-)POSITIVE PHASE (+) SIGNALWIRES(1)SIGNALWIRE(2)SIGNALWIRE(3 & 4) 8 WIRES (BLACK ) 2 WIRES (BLUE- #3 & #6) 8 WIRES (RED) 2 WIRES (BLUE- #1 & #4) 2 WIRES (BLUE- #2 & #5) LOOPED(14 AWG) TERMINAL WIRE TERMINATION DESIGNATION A1 A2 B C D 8 WIRES (BLACK ) 2 WIRES (BLUE- #3 & #6) 8 W
13、IRES (RED) 2 WIRES (BLUE- #1 & #4) 2 WIRES (BLUE- #2 & #5) Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AEROSPACE STANDARD AS7974/5SHEET 3 OF 3CABLE ASSEMBLY, EXTERNAL ELECTRIC POWER, AIRCRAFT, SI
14、NGLE-JACKETED 270 VDC, 90 KW 4. UNUSED CONDUCTOR ISOLATION TEST REQUIRED FOR QUALIFICATION AND QUALITY CONFORMANCE. A 270 VOLT DIRECT CURRENT SHALL BE APPLIED TO THE ALL POWER LEADS (NEGATIVE AND POSITIVE PHASES). THE UNUSED WIRES (#2 & #5) SHALL BE CONNECTED ELECTRICALLY THEN TESTED FOR CURRENT LOS
15、T. THE CURRENT LEAKAGE SHALL NOT EXCEED 1 MILLIAMP.5. CABLE ATTACHMENT TO PLUG (TENSION ON PLUG) TEST IN ACCORDANCE WITH AS7974 EXCEPT APPLY FORCE FROM THE REAR OF THE PLUG BODY AND THE CABLE NEAR THE REAR OF THE PLUG BODY. 6. CABLE ATTACHMENT TO CRIMP BARREL AND LUG TERMINAL CABLE ATTACHMENT TO LUG
16、 TERMINAL AND CRIMP BARREL TEST ACCORDING TO MIL-C-7974, EXCEPT APPLY THE FORCE BETWEEN THE LUG TERMINAL OR CRIMP BARREL AND EACH INDIVIDUAL WIRE OF A POWER, NEUTRAL, OR CONTROL LEG. TERMINAL TENSILE STRENGTH SHALL BE IN ACCORDANCE WITH AS7928. 7. PLUG ENGAGEMENT PLUG SHALL FULLY ENGAGE IN AN AS8179
17、0/1 CONNECTOR AS SPECIFIED IN AS7974. THE ENGAGING FORCE SHALL NOT EXCEED 100 POUNDS. THE DISENGAGING FORCE SHALL BE 80 20 POUNDS. 8. SPECIFICATION PART NUMBER M7974 /5 -1I I I I I I_ CABLE ASSEMBLY DESIGNATION PART NUMBER (SEE TABLE 2) I I I I_ AS7974 DETAIL SPECIFICATION NUMBER I I_ GENERAL SPECIF
18、ICATION NUMBER TABLE 2- AS7974 PART NUMBERS PARTNUMBER CABLE LENGTH (L) LENGTH TOLERANCE (FT.) M7974/5-1 1 +1, -0 M7974/5-15 15 M7974/5-23 23M7974/5-40 40 +1, -0.5 M7974/5-50 50M7974/5-60 60 M7974/5-63 63M7974/5-70 70 +2, -1 M7974/5-73 73M7974/5-83 83 M7974/5-90 90M7974/5-100 100 M7974/5-110 110M797
19、4/5-140 140 9. A CHANGE BAR (|) LOCATED IN THE LEFT MARGIN IS FOR THE CONVENIENCE OF THE USER IN LOCATING AREAS WHERE TECHNICAL REVISIONS, NOT EDITORIAL CHANGES HAVE BEEN MADE TO THE PREVIOUS ISSUE OF THIS DOCUMENT. AN (R) SYMBOL TO THE LEFT OF THE DOCUMENT TITLE INDICATES A COMPLETE REVISION OF THE
20、 DOCUMENT, INCLUDING TECHNICAL REVISIONS. CHANGE BARS AND (R) ARE NOT USED IN ORIGINAL PUBLICATIONS NOR IN DOCUMENTS THAT CONTAIN EDITORIAL CHANGES ONLY. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
