| Publication CODE |
Title |
| IEC 60794-1-111:2023 (2023-09) |
OPTICAL FIBRE CABLES - PART 1-111: GENERIC SPECIFICATION - BASIC OPTICAL CABLE TEST PROCEDURES - MECHANICAL TESTS METHODS - BEND, METHOD E11 |
| |
| Price Excl. VAT |
Total number of pages, tables and drawings |
|
122.00 €
|
37. |
Description
IEC 60794-1-111: 2023 defines the test procedure to determine the ability of an optical fibre cable to withstand bending around a test mandrel. The primary purpose of this procedure is to measure the change in attenuation when the cable is bent around a test mandrel. A secondary purpose is to assess whether the cable has been physically damaged by bending. NOTE 1'This test can be utilized at any specified temperature, including the low or high temperature limits for the cable. NOTE 2'The bend test procedure for cable elements is specified in IEC 60794-1-301, method G1. This document partially cancels and replaces IEC 60794-1-21:2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to IEC 60794'1'21:2015:
a) the nominal sample length was newly specified as 10 m between the cable element fixing points at both ends, unless otherwise specified;
b) the number of turns on the mandrel in Figure 1 for the single-helix configuration were corrected to match the number of turns shown in the figure for the two-helix configuration;
c) requirements on the turnaround loop were added for method E11A, two-helix configuration;
d) the turnaround loop with the same diameter as the mandrel was taken into account for calculation of the number of turns of each helix for method E11A, two-helix configuration;
e) added a formula for calculation of the number of revolutions in each helix for method E11A, two-helix configuration;
f) added a description for the procedure when the turnaround loop diameter is larger than the mandrel diameter for method E11A, two-helix configuration;
g) all the figures were updated and the different components labelled;
h) added the attenuation monitoring equipment in 4.2 for the apparatus and the description to measure the change in attenuation in the test methods E11A and E11B;
i) added Clause 9 for details to be reported;
j) added Annex A showing an example of a special mandrel to perform the bend test according to method E11A, two-helix configuration;
k) added Annex B providing the rationale for the options of method E11A, two-helix configuration.
|
| Class |
C990
(IEC PUBLICATIONS IEC PUBLICATIONS)
|
| Committee |
TC 86/SC 86A
FIBRES AND CABLES (optical)
|
| Responsible |
Monsieur POLART Jules, Ingénieur
Chaussée de Brunehault, 380
7140
MORLANWELZ
Phone: 064 / 45 16 83
Fax: 064 / 45 16 83
E-mail: jules.polart@ceb-bec.be
|
| BEC Approval |
2023-09-19 |
| ICS-Code (International Standards Classification) |
33.180.10
|
| NBN Status |
New |
|
| IEC publication date |
2023-09-19 |
| IEC stability date |
2026-12-31 |
| IEC file modification date |
2023-09-19 |
| IEC last modification date |
2023-09-19 |
|
