CLC/TS 50576:2016

European foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Extended application of test results (EXAP)
5 Specific EXAP with safety margin for power cables
6 General EXAP for power cables
7 Specific EXAP with safety margin for optical fibre
   cables
8 EXAP rule for EN 50399 test for flaming
   droplets/particles for power, control and
   communication (copper or optical fibre) cables
9 EXAP rule for EN 60332-1-2 test for classes B2[ca],C[ca],
   and D[ca] for power, control and
   communication (copper or optical fibre) cables
10 EXAP rule for EN 60332-1-2 test for class E[ca] for
   power, control and communication (copper or optical
   fibre) cables
11 EXAP rule for EN 61034-2 test for classes s1a and
   s1b for power, control and communication (copper or
   optical fibre) cables
Annex A (informative) - Flow chart and checklist for
        specific EXAP for power cables
Annex B (normative) - Rounding of numbers
Annex C (informative) - Background information on
        EN 60332-1-2 and EN 61034-2 testing
Bibliography

TThis Technical Specification gives the procedure and rules for extended application of results of tests carried out according to the test methods described in EN 50399, EN 60332 1 2 and EN 61034 2.The EXAP rules described apply to EN 50399 test results used for classification in classes B2ca,Cca and Dca, additional smoke production classes s1, s2 and s3 and flaming droplets/particles, to EN 60332 1 2 test results used for classification in classes B2ca,Cca, Dca and Eca and to EN 61034 2 test results used for classification in classes s1a and s1b.Cables of diameter 5,0 mm and less should be tested as bundles according to EN 50399 and are excluded from these rules. Bundled cables are not included in the EXAP rules applying to EN 50399 test results.The rules apply to circular and non-circular cables provided that they fall within the scope of the relevant test method.A specific EXAP rule has been developed for the most common generic power cable families and optical fibre cables. A general EXAP rule has been developed for any power cable families. The general EXAP rule is not applicable to communication or optical fibre cables.NOTE 1Multicore power cables with more than 5 cores are sometimes referred to as control cables with a rated voltage but for the purposes of this standard are considered as power cables.The general EXAP rule may be applied in the case of hybrid cables provided that the conditions of 6.1 are fulfilled.The use of the specific EXAP rule gives benefit in the lower number of cables to be tested for a range of cable constructions (product family).An EXAP is only possible when cables belong to a defined family as defined in this Technical Specification.NOTE 2No EXAP procedure and rules have been developed in respect of the results of tests carried out according to the test method described in EN 60754–2. As the parameters (pH and conductivity) for each cable in a family are determined based upon calculation using material test results, this is considered as a matter of direct application. Material test results taken from any one sample of finished cable from a family are sufficient to calculate the parameters for each cable in the family.