1、 National Aeronautics and Space Administration John C. Stennis Space Center Stennis Space Center, MS 39529-6000 SSTD-8070-0096-TEST Rev. Basic September 2010 John C. Stennis Space Center CONTROLS AND INSTRUMENTATION CABLE TESTING Original signed by Richard Harris_ 09/02/10 NASA SSC Center Operations
2、 Directorate Date Operations validate prior to use. Provided by IHS Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Stennis Standard SSTD-8070-0096-TEST Basic Number Rev. Effective Date: September 22, 2010 Review Date: September 22, 2015 Page 2 of 13 Responsible Of
3、fice: NASA SSC Center Operations Directorate SUBJECT: Controls And Instrumentation Cable Testing Document History Log Change/ Revision Change Date Originator/ Phone Description Basic 09.22.10 J. Lacher/8-1066 Initial release, supersedes SSC 61-003. RELEASED - Printed documents may be obsolete; valid
4、ate prior to use. Provided by IHS Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Stennis Standard SSTD-8070-0096-TEST Basic Number Rev. Effective Date: September 22, 2010 Review Date: September 22, 2015 Page 3 of 13 Responsible Office: NASA SSC Center Operations D
5、irectorate SUBJECT: Controls And Instrumentation Cable Testing Table of Contents 1.0 PURPOSE 4 2.0 APPLICABILITY . 4 3.0 REFERENCES 4 4.0 RESPONSIBILITIES . 4 5.0 TEST EQUIPMENT . 5 6.0 GENERAL REQUIREMENTS . 5 6.1 Patch Panel Testing 5 6.2 Taper Pin Terminal Block Testing . 5 6.3 Military Specifica
6、tion (MS) Connector Testing 5 6.4 Test Conditions 5 6.5 Test Connections 6 6.6 Mating 6 6.7 Test Sequence 6 7.0 DETAILED REQUIREMENTS 7 7.1 Continuity Test. 7 7.2 Insulation Resistance Test 9 8.0 QUALITY ASSURANCE 10 8.1 Inspection . 10 8.2 Failures . 10 9.0 RECORDS AND FORMS 10 10.0 ACRONYMS AND AB
7、BREVIATIONS . 11 Chart A. 7 Sketch A.9 Table 18 Table 28 Table 3.12 RELEASED - Printed documents may be obsolete; validate prior to use. Provided by IHS Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Stennis Standard SSTD-8070-0096-TEST Basic Number Rev. Effective
8、 Date: September 22, 2010 Review Date: September 22, 2015 Page 4 of 13 Responsible Office: NASA SSC Center Operations Directorate SUBJECT: Controls And Instrumentation Cable Testing 1.0 PURPOSE This John C. Stennis Space Center (SSC) standard (SSTD) defines acceptance requirements and test procedure
9、s for testing low voltage instrumentation transmission, distribution and control cable for continuity, short circuit and insulation resistance. 2.0 APPLICABILITY a. This SSTD applies to cables which are either installed, in storage or in shop-made assemblies. b. Work specifications shall specificall
10、y state the need for cable testing when it is required. c. This SSTD shall be used for cable testing unless specified otherwise. d. Testing of coaxial cable or power cable is not within the scope of this standard. 3.0 REFERENCES All references are assumed to be the latest version unless otherwise in
11、dicated. ANSI/NEMA WC 70/ICEA 5-95-658, Power Cables Rated 2000V Or Less For the Distribution Of Electrical Energy ANSI/NEMA WC 71/ICEA 5-96-659, Standard For Non-Shielded Cables Rated 2001-5000V For Use In The Distribution Of Electrical Energy NEMA WC 74/ICEA 5-93-639, 5-46 KV Shielded Power Cable
12、For Use In The Transmission And Distribution Of Electrical Energy SPR 1440.1, SSC Records Management Program Requirements SSTD-8070-0005-CONFIG, SSC Preparation, Review, Approval, and Release of SSC Standards 4.0 RESPONSIBILITIES a. Users of this SSTD shall comply with its requirements, ensure use o
13、f the correct version of this standard and the documents it references, and inform the appropriate organization of needed changes in accordance with SSTD-8070-0005-CONFIG. RELEASED - Printed documents may be obsolete; validate prior to use. Provided by IHS Not for ResaleNo reproduction or networking
14、 permitted without license from IHS-,-,-Stennis Standard SSTD-8070-0096-TEST Basic Number Rev. Effective Date: September 22, 2010 Review Date: September 22, 2015 Page 5 of 13 Responsible Office: NASA SSC Center Operations Directorate SUBJECT: Controls And Instrumentation Cable Testing b. Responsibil
15、ities for the use and control of this SSTD and for the review and approval of revisions or cancellation of this standard shall be as specified in SSTD-8070-0005-CONFIG and the applicable documents referenced therein. 5.0 TEST EQUIPMENT a. For continuity and short tests, use an ohmmeter. b. Buzzer ma
16、y be used for continuity check only. c. For insulation resistance tests use a general radio megohmmeter, type 1862-C or equivalent, with calibration traceable to the National Institute of Standards and Technology (NIST) and capable of ranging to four (4) times the required operating voltage of the c
17、able tested. 6.0 GENERAL REQUIREMENTS 6.1 Patch Panel Testing Cables terminating into patch panels can remain connected, provided the cable being tested is isolated from other cable or equipment. 6.2 Taper Pin Terminal Block Testing Cables terminating into taper pin terminal blocks can be tested wit
18、hout removing the cables provided the cable being tested is isolated from other cable or equipment. 6.3 Military Specification (MS) Connector Testing Cables terminating into connectors such as CANNON or Military Standard shall be left terminated to connector provided the connector is disconnected fr
19、om the equipment, and the cable is isolated. 6.4 Test Conditions a. Special care shall be taken for all testing to prevent damage to the connectors, wire harness and related equipment. b. Items being tested shall not be connected to electrical or electronic components or assemblies during tests, exc
20、ept as outlined in this standard. RELEASED - Printed documents may be obsolete; validate prior to use. Provided by IHS Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Stennis Standard SSTD-8070-0096-TEST Basic Number Rev. Effective Date: September 22, 2010 Review D
21、ate: September 22, 2015 Page 6 of 13 Responsible Office: NASA SSC Center Operations Directorate SUBJECT: Controls And Instrumentation Cable Testing 6.5 Test Connections a. Test connections shall be made at wire or cable terminations. b. Connection shall not be made by piercing insulation. c. For con
22、nection to the connector end of cable being tested, a mating plug/receptacle, or mating pins/sockets, shall be used. d. In no case shall test probes be used on cable connection contacts. 6.6 Mating a. Test cable connectors shall be thoroughly examined for cleanliness, compatibility, and damage prior
23、 to mating with connector of cable being tested. b. Extreme care shall be used to prevent damage to cable connectors. 6.7 Test Sequence Tests shall be performed on completed cables in the following sequence: a. Short test b. Conductor continuity or resistance test c. Insulation resistance test (See
24、Chart A) RELEASED - Printed documents may be obsolete; validate prior to use. Provided by IHS Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Stennis Standard SSTD-8070-0096-TEST Basic Number Rev. Effective Date: September 22, 2010 Review Date: September 22, 2015 P
25、age 7 of 13 Responsible Office: NASA SSC Center Operations Directorate SUBJECT: Controls And Instrumentation Cable Testing Chart A TYPICAL INSULATION RESISTANCE TEST DATA FORM Pin To Pin Resistance Reading A B C D E F G Con. Shell B C D E F G Con. Shell C D E F G Con. Shell D E F G Con. Shell E F G
26、Con. Shell F G Con. Shell 7.0 DETAILED REQUIREMENTS 7.1 Continuity Test a. All wires and cables shall be resistance tested for continuity of conductors and shields in accordance with the applicable engineering drawing or wire list. RELEASED - Printed documents may be obsolete; validate prior to use.
27、 Provided by IHS Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Stennis Standard SSTD-8070-0096-TEST Basic Number Rev. Effective Date: September 22, 2010 Review Date: September 22, 2015 Page 8 of 13 Responsible Office: NASA SSC Center Operations Directorate SUBJEC
28、T: Controls And Instrumentation Cable Testing b. Excluding the resistance of test equipment, the maximum acceptable resistance of tested cable shall be in accordance with Table 1. Table 1 CONTINUITY RESISTANCE Wire Size (AWG) Maximum Resistance/100 ft. (OHMS) 26 through 24 5 22 through 20 2 18 throu
29、gh 10 1 Cable Shield 3 c. Resistance greater than shown in Table 1 is acceptable providing the excess is due to wire length. d. The DC resistance of each conductor at 68 F shall not exceed the values shown in Table 2 Table 2 WIRE RESISTANCE Wire Size (AWG) Maximum Resistance/100 ft. (OHMS) 26 4.940
30、24 3.010 22 1.600 20 .977 18 .610 16 .476 14 .300 12 .198 10 .124 e. Each conductor in a cable is checked for a short to the shield, connector shell and to each other conductor. RELEASED - Printed documents may be obsolete; validate prior to use. Provided by IHS Not for ResaleNo reproduction or netw
31、orking permitted without license from IHS-,-,-Stennis Standard SSTD-8070-0096-TEST Basic Number Rev. Effective Date: September 22, 2010 Review Date: September 22, 2015 Page 9 of 13 Responsible Office: NASA SSC Center Operations Directorate SUBJECT: Controls And Instrumentation Cable Testing 7.2 Insu
32、lation Resistance Test a. Use Megger listed in Section 5.0 “Test Equipment” as follows: Test Voltage 500 VDC +/- 25 Maximum Dwell Time Two (2) minutes Minimum Insulation Resistance 100 Megohms b. Wires and cable shall be subjected to the following insulation resistance tests at 500VDC for a dwell ti
33、me adequate for stabilization but not to exceed two (2) minutes. c. The minimum insulation resistance shall be 100 megohms between the following points referred to in Sketch A below: Note: Use the connector end of cable that terminates all conductors and shields. At 500VDC +/- 25 V, measure and reco
34、rd resistance pin-to-pin. Minimum acceptable values are shown in Table III. Sketch A 1. Between each conductor and all other conductors. 2. Between each conductor and connector shell. RELEASED - Printed documents may be obsolete; validate prior to use. Provided by IHS Not for ResaleNo reproduction o
35、r networking permitted without license from IHS-,-,-Stennis Standard SSTD-8070-0096-TEST Basic Number Rev. Effective Date: September 22, 2010 Review Date: September 22, 2015 Page 10 of 13 Responsible Office: NASA SSC Center Operations Directorate SUBJECT: Controls And Instrumentation Cable Testing 3
36、. Between each conductor and each shield (except ground wires) in the same assembly. 4. Between each shield terminating inside a connector, and the outer connector shell. (This does not apply to shields which terminate on the connector shell) 5. Between each shield and all other shields. d. Minimum
37、acceptable resistance for different types of cables are shown in Table III. e. Shields may be jumpered together to expedite a test, only when specified in the engineering drawing or test instruction. 8.0 QUALITY ASSURANCE 8.1 Inspection a. An authorized Quality Control Representative shall monitor t
38、he performance of all tests specified. b. An authorized Quality Control Representative shall verify compliance to this specification by signing or stamping the applicable documents. 8.2 Failures Any partial failure shall mean complete failure and cause for rejection of the tested assembly. 9.0 RECOR
39、DS AND FORMS Records and forms required by the procedures of this standard shall be maintained in accordance with SPR 1440.1. All records and forms are assumed to be the latest edition unless otherwise indicated. Forms may be obtained from the SSC Electronic Forms repository or from the NASA SSC For
40、ms Management Officer. Quality Records are identified in the SSC Master Records Index. RELEASED - Printed documents may be obsolete; validate prior to use. Provided by IHS Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Stennis Standard SSTD-8070-0096-TEST Basic Nu
41、mber Rev. Effective Date: September 22, 2010 Review Date: September 22, 2015 Page 11 of 13 Responsible Office: NASA SSC Center Operations Directorate SUBJECT: Controls And Instrumentation Cable Testing 10.0 ACRONYMS AND ABBREVIATIONS Degrees ANSI American National Standards Institute AWG American Wi
42、re Gage DC Direct Current F Fahrenheit FT Foot/Feet MS Military Specification NASA National Aeronautics and Space Administration NEMA National Electrical Manufacturers Association NIST National Institute of Standards and Technology SSC John C. Stennis Space Center SSTD John C. Stennis Space Center S
43、tandard SPR Stennis Procedural Requirements RELEASED - Printed documents may be obsolete; validate prior to use. Provided by IHS Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Stennis Standard SSTD-8070-0096-TEST Basic Number Rev. Effective Date: September 22, 201
44、0 Review Date: September 22, 2015 Page 12 of 13 Responsible Office: NASA SSC Center Operations Directorate SUBJECT: Controls And Instrumentation Cable Testing Table 3 INSTRUMENTATION AND CONTROL CABLE LIST Type Code Conductors Use Each Conductor To Shield* Shields to Shields* Shield to Ground* S12/S
45、4/C#16 LF 48 Inst. 10,000 100 10 S12/S2/C#16 KB 24 Inst. 10,000 100 10 S20/C#16 NK 10 Inst. 10,000 - 10 S8/C#16 MM 8 Inst. 10,000 - 10 S8/C#20 MK 8 Inst. 10,000 - 10 S8/C#22 MJ 8 Inst. 10,000 - 10 S4/C#20 KU 4 Inst. 10,000 - 10 S4/C#22 KT 4 Inst. 10,000 - 10 S2/C#20 JN 2 Inst. 10,000 - 10 S2/C#22 JM
46、 2 Inst. 10,000 - 10 S2/C#16CU-CN TE 2 Inst. 10,000 - 10 S2/C#16Fe-Cn TL 2 Inst. 10,000 - 10 S2/C#16Cr-Al TB 2 Inst. 10,000 - 10 S2/C#16CR-Cn TT 2 Inst. 10,000 - 10 S60/C#16 NZ 60 Control 10,000 - 1 S30/S1/C316 JG 30 Control 5,000 10 1 S20/S2/C#16 KD 40 Control 10,000 10 1 S15/S3/C#16 KR 45 Control 10,000 10 1 S10/S5/C#16 LA 50 Control 10,000 10 1 S12/S2/C#16 KB 24 Control 10,000 10 10 S6/S2/C#16 JW 12 Control 10,000 10 10 FH4-50A SM 1 Control 10,000 - 1 12PR#22 FM 24 Telephone 5,000 - 100 25PR#22 FB validate prior to use. Provided by IHS Not for Resa
