{"id":371992,"date":"2024-10-20T02:27:15","date_gmt":"2024-10-20T02:27:15","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bsi-pd-iec-tr-629592021\/"},"modified":"2024-10-26T04:16:29","modified_gmt":"2024-10-26T04:16:29","slug":"bsi-pd-iec-tr-629592021","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bsi-pd-iec-tr-629592021\/","title":{"rendered":"BSI PD IEC TR 62959:2021"},"content":{"rendered":"

This document, which is a Technical Report, provides information on cable shrinkage characterisation of optical fibre cables that consist of standard glass optical fibres for telecommunication application. The characterisation is directed to the effects of cable shrinkage or cable element shrinkage on the termination of cables. Shrinkage can or cannot be a concern depending on the method of termination. Examples of different cable termination cases are included and described. Tests for the evaluation of cable shrinkage are recommended that can be used as indicators, and shrinkage classification by several grades are given.<\/p>\n

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PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nundefined <\/td>\n<\/tr>\n
4<\/td>\nCONTENTS <\/td>\n<\/tr>\n
9<\/td>\nFOREWORD <\/td>\n<\/tr>\n
11<\/td>\nINTRODUCTION <\/td>\n<\/tr>\n
12<\/td>\n1 Scope
2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n
13<\/td>\n4 Abbreviated terms
5 Characteristics of optical fibre cables
5.1 General
5.2 Cable materials
5.2.1 Plastic materials
5.2.2 Reversible thermal expansion and contraction <\/td>\n<\/tr>\n
14<\/td>\n5.2.3 Irreversible thermal contraction (shrinkage)
Tables
Table 1 \u2013 Linear coefficients of thermal expansion of materials (informative) <\/td>\n<\/tr>\n
15<\/td>\n5.2.4 Forces between cable elements caused by thermal changes
5.3 Cable design
Figures
Figure 1 \u2013 Qualitative example of force duringdecreasing temperature of two polymer materials <\/td>\n<\/tr>\n
16<\/td>\n5.4 Basic cable types <\/td>\n<\/tr>\n
17<\/td>\n5.5 Cable performance
5.5.1 General
5.5.2 Optical performance during temperature changes
Table 2 \u2013 Typical characteristics of indoor and outdoor cables <\/td>\n<\/tr>\n
18<\/td>\n5.5.3 Cable shrinkage characteristic
5.5.4 Cable shrinkage during connector termination process <\/td>\n<\/tr>\n
19<\/td>\n6 Test methods for cable shrinkage
6.1 General
6.2 Conditions before shrinkage testing
6.3 Test method F11 <\/td>\n<\/tr>\n
20<\/td>\n6.4 Test method F17
Figure 2 \u2013 Cable sample for shrinkage testing according to Method F11 <\/td>\n<\/tr>\n
21<\/td>\n7 Conclusions of the cable shrinkage study
7.1 General
7.2 Conclusion for simplex cables
Figure 3 \u2013 Cable sample for fibre protrusion testing according to Method F17 <\/td>\n<\/tr>\n
22<\/td>\n7.3 Conclusion for loose tube cables
8 Termination cases of optical fibre cables
8.1 General
8.2 Different termination cases <\/td>\n<\/tr>\n
23<\/td>\n9 Recommended tests for evaluation of shrinkage effects
9.1 General
Table 3 \u2013 Overview of different termination cases <\/td>\n<\/tr>\n
24<\/td>\n9.2 Limitation of tests for determination of shrinkage effects
9.3 Cables terminated with connectors
9.3.1 Performance indicator tests
9.3.2 Cable shrinkage
9.3.3 Cable thermal expansion and contraction
9.3.4 Cable element forces
9.4 Cables terminated with hardened connectors
9.4.1 Performance indicator tests <\/td>\n<\/tr>\n
25<\/td>\n9.4.2 Cable shrinkage (fibre protrusion)
9.5 Cables fixed into a module and fibres terminated with connectors
9.5.1 Performance indicator tests
9.5.2 Cable shrinkage (fibre protrusion)
9.6 Cables fixed into a divider and fan-out cables terminated with connectors
9.6.1 Performance indicator tests <\/td>\n<\/tr>\n
26<\/td>\n9.6.2 General
9.6.3 Shrinkage (fibre protrusion)
9.6.4 Shrinkage of fan-out cable <\/td>\n<\/tr>\n
27<\/td>\n9.7 Cables fixed into a protective housing and terminated with splices
9.7.1 Performance indicator tests
9.7.2 Cable shrinkage (fibre protrusion)
9.7.3 Sheath shrinkage
9.8 Cables fixed into a protective housing and terminated with connectors
9.8.1 Performance indicator tests
9.8.2 Cable shrinkage <\/td>\n<\/tr>\n
28<\/td>\n10 Recommended test parameters for shrinkage testing and shrinkage grades
10.1 General
10.2 Recommended test parameters for shrinkage testing <\/td>\n<\/tr>\n
29<\/td>\n10.3 Shrinkage grades for Method F11A
10.4 Recommended shrinkage limit for Method F11B
10.5 Fibre protrusion grades for Method F17
Table 4 \u2013 Temperature cycling severitiesfor shrinkage testing for Methods F11A and F17
Table 5 \u2013 Recommended sheath shrinkage grades <\/td>\n<\/tr>\n
30<\/td>\nTable 6 \u2013 Recommended change of fibre protrusion \u2206L1 grades
Table 7 \u2013 Recommended change of fibre protrusion \u2206L2 grades <\/td>\n<\/tr>\n
31<\/td>\nAnnexes
Annex A (informative)Test results of the cable shrinkage study
A.1 General
A.2 Shrinkage test results of simplex cables
A.2.1 Simplex cable types for shrinkage tests
A.2.2 Shrinkage test with different aging methods and duration <\/td>\n<\/tr>\n
33<\/td>\nFigure A.1 \u2013 Sheath shrinkage in mm of cable type 1 with different temperatures <\/td>\n<\/tr>\n
34<\/td>\nFigure A.2 \u2013 Sheath shrinkage in mm of cable type 2 with different temperatures <\/td>\n<\/tr>\n
35<\/td>\nA.2.3 Shrinkage test with various numbers of temperature cycles
Figure A.3 \u2013 Sheath shrinkage in mm of cable type 3 with different temperatures <\/td>\n<\/tr>\n
36<\/td>\nA.2.4 Shrinkage test with different sample lengths
A.2.5 Shrinkage test versus optical performance of two different simplex cables
Figure A.4 \u2013 Sheath shrinkage at different number of cycles
Table A.1 \u2013 Overview of shrinkage results <\/td>\n<\/tr>\n
37<\/td>\nFigure A.5 \u2013 Change in attenuation during temperature cycling
Table A.2 \u2013 Overview of simplex results <\/td>\n<\/tr>\n
38<\/td>\nA.2.6 Shrinkage test versus optical performance of different versions of a simplex cable
A.2.7 Change in length during and after climatic exposure
Figure A.6 \u2013 Change in attenuation versus sheath shrinkage <\/td>\n<\/tr>\n
39<\/td>\nA.3 Shrinkage test results for loose tube cables
A.3.1 Loose tube cable types for shrinkage tests
A.3.2 Shrinkage test (method F11 modified) of four loose tube cable types
Table A.3 \u2013 Details of loose tube cable types <\/td>\n<\/tr>\n
40<\/td>\nFigure A.7 \u2013 Preparation of sample and measured lengths <\/td>\n<\/tr>\n
41<\/td>\nA.3.3 Shrinkage test (method F17) of four loose tube cable types
Figure A.8 \u2013 Shrinkage of sheath and loose tube after different number of cycles <\/td>\n<\/tr>\n
42<\/td>\nFigure A.9 \u2013 Preparation of sample and measured or calculated protrusion lengths <\/td>\n<\/tr>\n
43<\/td>\nFigure A.10 \u2013 Protrusion length of cable type 1
Figure A.11 \u2013 Protrusion length of cable type 2 <\/td>\n<\/tr>\n
44<\/td>\nFigure A.12 \u2013 Protrusion length of cable type 3
Figure A.13 \u2013 Protrusion length of cable type 4 <\/td>\n<\/tr>\n
45<\/td>\nA.3.4 Shrinkage test of nine unitube cable types
Table A.4 \u2013 Details of unitube cable types <\/td>\n<\/tr>\n
46<\/td>\nFigure A.14 \u2013 Change of fibre protrusion <\/td>\n<\/tr>\n
47<\/td>\nAnnex B (informative)Test method for change in length during climatic exposure
B.1 General
B.2 Cable samples
B.3 Apparatus for determination of the change in length
Figure B.1 \u2013 Apparatus for holding cable samples <\/td>\n<\/tr>\n
48<\/td>\nB.4 Procedure for determination of the change in length
B.5 Test results for the change in length
Figure B.2 \u2013 Temperature cycle with measurement points <\/td>\n<\/tr>\n
49<\/td>\nB.6 Procedure for determination of the change in attenuation
B.7 Test results for the change in attenuation
Figure B.3 \u2013 Cable sheath length measurement results <\/td>\n<\/tr>\n
50<\/td>\nFigure B.4 \u2013 Change in attenuation of orange cable samples at 1 310 nm
Figure B.5 \u2013 Change in attenuation of orange cable samples at 1 550 nm <\/td>\n<\/tr>\n
51<\/td>\nFigure B.6 \u2013 Change in attenuation of orange cable samples at 1 625 nm
Figure B.7 \u2013 Change in attenuation of yellow cable samples at 1 310 nm <\/td>\n<\/tr>\n
52<\/td>\nB.8 Comparison of change in length with change in attenuation
Figure B.8 \u2013 Change in attenuation of yellow cable samples at 1 550 nm
Figure B.9 \u2013 Change in attenuation of yellow cable samples at 1 625 nm <\/td>\n<\/tr>\n
53<\/td>\nB.9 Conclusion
Table B.1 \u2013 Comparison of change in length with change in attenuation <\/td>\n<\/tr>\n
54<\/td>\nAnnex C (informative)Shrinkage testing template
Table C.1 \u2013 Shrinkage testing template <\/td>\n<\/tr>\n
55<\/td>\nAnnex D (informative) Recommended tests for performance evaluation of cables to be terminated with connectors
D.1 General
D.2 Connector types and design
Figure D.1 \u2013 Cable terminated with connector plug
Figure D.2 \u2013 LC connector variants <\/td>\n<\/tr>\n
56<\/td>\nFigure D.3 \u2013 Simplex cable terminated at LC simplex connector <\/td>\n<\/tr>\n
57<\/td>\nD.3 Simplex and duplex cable types
Figure D.4 \u2013 Fibre movement in spring-loaded connectors
Figure D.5 \u2013 Simplex cable type <\/td>\n<\/tr>\n
58<\/td>\nD.4 Termination of a cable to a connector
Figure D.6 \u2013 Duplex cable types <\/td>\n<\/tr>\n
59<\/td>\nD.5 Overview of recommended cable tests
D.6 Main performance of a terminated cable
Table D.1 \u2013 Recommended tests for cables to be terminated with connectors <\/td>\n<\/tr>\n
60<\/td>\nD.7 Guidance for change of temperature test methods
Figure D.7 \u2013 Test arrangement for method F12 <\/td>\n<\/tr>\n
61<\/td>\nAnnex E (informative)Recommended tests for performance evaluation of cables to be terminated with hardened connectors
E.1 General
E.2 Connector types and design
E.3 Cable types for hardened connectors
E.4 Termination of a cable to a hardened connector
Figure E.1 \u2013 Cable terminated with hardened connector <\/td>\n<\/tr>\n
62<\/td>\nE.5 Overview of recommended cable tests
E.6 Environmental performance of a terminated cable
Table E.1 \u2013 Recommended tests for cables to be terminated with hardened connectors <\/td>\n<\/tr>\n
63<\/td>\nAnnex F (informative)Recommended tests for performance evaluation of cablesfixed into a module and fibres terminated with connectors
F.1 General
F.2 Connector types and design
F.3 Cable types
F.4 Termination of a cable to a module
Figure F.1 \u2013 Cable fixed into a module and terminated with connectors <\/td>\n<\/tr>\n
64<\/td>\nF.5 Overview of recommended cable tests
F.6 Main performance of a terminated cable
Table F.1 \u2013 Recommended tests for cables fixed into module and terminated with connectors <\/td>\n<\/tr>\n
65<\/td>\nAnnex G (informative)Recommended tests for performance evaluation of cables fixedinto a divider and fan-out cables terminated with connectors
G.1 General
G.2 Connector types and design
G.3 Cable types
G.3.1 Cables
G.3.2 Fan-out cables
Figure G.1 \u2013 Cable fixed into a divider and fan-outcables terminated with connectors <\/td>\n<\/tr>\n
66<\/td>\nG.4 Termination of a cable into a divider and at fan-out cables
G.5 Overview of recommended cable tests
G.5.1 Recommended test for cable assembly
G.5.2 Recommended tests for cables
Table G.1 \u2013 Recommended tests for cable assembly
Table G.2 \u2013 Recommended tests for cables fixed into dividers <\/td>\n<\/tr>\n
67<\/td>\nG.5.3 Recommended tests for fan-out cables
Table G.3 \u2013 Recommended tests for fan-out cables <\/td>\n<\/tr>\n
68<\/td>\nAnnex H (informative)Recommended tests for performance evaluation of cables fixedinto a protective housing and terminated with splices
H.1 General
H.2 Types of protective housings
Figure H.1 \u2013 Cable fixed into a protective housing and terminated with splices <\/td>\n<\/tr>\n
69<\/td>\nH.3 Cable types
H.4 Termination of a cable in a protective housing
H.5 Overview of recommended cable tests
Table H.1 \u2013 Recommended tests for cables fixed at protective housing and terminated with splices <\/td>\n<\/tr>\n
70<\/td>\nH.6 Main performance of a terminated cable <\/td>\n<\/tr>\n
71<\/td>\nAnnex I (informative)Recommended tests for performance evaluation of cables fixedinto a protective housing and terminated with connectors
I.1 General
I.2 Types of protective housings
I.3 Cable types
I.4 Termination of a cable into a protective housing
Figure I.1 \u2013 Cable fixed into a protective housing and terminated with connectors <\/td>\n<\/tr>\n
72<\/td>\nI.5 Overview of recommended cable tests
I.6 Main performance of a terminated cable
Table I.1 \u2013 Recommended tests for cables fixed into a protective housing and terminated with connectors <\/td>\n<\/tr>\n
73<\/td>\nAnnex J (informative)Recommended test parameters for change of temperature testing
J.1 Test methods and severities
Table J.1 \u2013 Severities for change of temperature testing <\/td>\n<\/tr>\n
74<\/td>\nJ.2 Additional recommendations for the change of temperature test
Figure J.1 \u2013 Change of temperature test configuration <\/td>\n<\/tr>\n
75<\/td>\nAnnex K (informative)Cross-references of cable test methods
Table K.1 \u2013 Cross reference table of mechanical test methods
Table K.2 \u2013 Cross reference table of environmental test methods <\/td>\n<\/tr>\n
76<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Optical fibre cables. Shrinkage effects on cable and cable element end termination. Guidance<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2021<\/td>\n78<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":372001,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[649,2641],"product_tag":[],"class_list":{"0":"post-371992","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-33-180-10","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/371992","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/372001"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=371992"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=371992"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=371992"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}