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This test evaluates the potential contribution of a cable to obscuration of vision when burning under static air conditions. The test is relevant for the classes 61^, 62^, C_ca and D_ca, in association with the additional classification s.

This test evaluates the potential contribution of burning cable materials to produce acidic gases. The test is relevant for the classes B1 _ca, B2_ca, and in association with the additional classification a.

6. Principles for specimen preparation

Before testing, product specimens shall be prepared and conditioned and, where relevant, mounted in accordance with the relevant test methods.

Cables tested according to EN 50399 are mounted on a cable ladder. The number of cables, their spacing and other mounting details vary according to the cable diameter as described in EN 50399. It should be noted that cables applying for class D^, or 62^ are all mounted in a similar way while for cables applying for Blca there is an additional requirement that a non-combustible calcium silicate board is mounted at the back of the cable ladder. Details are given in EN 50399.

7. Number of tests for classification

   1. Minimum number of tests

The minimum number of tests given in the appropriate test method is as follows:

1. the number of tests used for classification against EN 50399 is one;

2. the number of tests used for classification against EN 50267-2-3 is three;

3. the number of tests used for classification against EN 61034-2 is one;

4. the number of tests used for classification against EN 60332-1-2 is one;

5. the number of tests used for classification against EN ISO 1716 is three.

Two additional tests may be carried out only under the conditions given in 7.4 c), 7.4 d), 7.5, on request of the sponsor.

For a product to claim a particular classification all the relevant criteria, given in Table 1, shall comply with the stated requirements.

For each continuous parameter (PCS, FIGRA, THR_1200s, Peak HRR, FS, TSP_1200s, Peak SPR, transmittance, pH and conductivity) the selection of the class is based on the mean value (m) of the results of this parameter, (unless only one single test result is required), determined in accordance with the relevant test method, using the following procedure:

1. calculate the mean value (т’) of the results for this parameter using the minimum number of tests;

2. if m’ lies within the limits for an envisaged class, the value m used for classification is m’;

3. if m’ does not lie within the limits for an envisaged class, two additional tests may be carried out;

4. if two additional tests are carried out, the results for each parameter in these two tests shall be added to the results obtained in the minimum number of tests. The value m, used for classification, shall then be calculated as mean value using all results for each parameter.

For the discontinuous compliance parameter H and flaming droplets/particles, the selection of the class is based on the presence of a non-compliance result of this parameter, determined in accordance with the relevant test method, using the following procedure:

1. If the results for this parameter do not contain a non-compliance, the result “compliant” shall be used for classification. If the results for this parameter contain a non-compliant result, two additional tests may be carried out.

2. If the two additional tests are not carried out, then the result “non-compliant” shall be used for classification.

3. If the two additional tests are carried out, and a further “non-compliant” is recorded, the result “non- compliant” shall be used for classification. If no further non-compliance results are recorded, then a result “compliant” shall be used for classification.

8. Testing of electric cables (see Table 1)

   1. Class E_ca

A product applying for class E_ca shall be tested in accordance with EN 60332-1-2.

A product applying for class D_M, C_ca or 62^ shall be tested in accordance with EN 60332-1-2.

Products satisfying the EN 60332-1-2 criteria, shall additionally be tested in accordance with EN 50399 (20,5 kW flame source).

A product applying for class B1ca shall be tested in accordance with EN 60332-1-2.

Products satisfying the EN 60332-1-2 criteria, shall additionally be tested in accordance with EN 50399 (30 kW flame source).

A product applying for class Аса shall be tested in accordance with EN ISO 1716.

Classifications s1, s2 and s3 are deduced from the measured data obtained from testing in accordance with EN 50399.

Additional classifications within class D_a, С_и or B2_ca shall originate from the test with the 20,5 kW flame source.

Additional classifications within class B1ca shall originate from the test with the 30 kW flame source.

Classifications s1a and s1b are deduced from the measured data obtained from testing in accordance with EN 61034-2.

Classifications dO, d1 and d2 are deduced from observations of flaming droplets and particles obtained from testing in accordance with EN 50399.

Classifications a1, a2 and a3 are deduced from measurements obtained from testing in accordance with EN 50267-2-3.

9. Classification criteria for electric cables (see Table 1)

   1. General

Performance levels for each specific parameter are determined from the test methods.

a) continuous parameters

EN 50399 Flaming droplets/particles

EN 60332-1-2 H

No performance criteria.

Class Fca also applies if a product fails to obtain Class Eca when tested to EN 60332-1-2.

The product shall satisfy the following criterion:

EN 60332-1-2

Under conditions of surface flame attack, and with an exposure time in accordance with EN 60332-1-2:2004, Table 1, there shall be no flame spread (/-/) in excess of 425 mm before the test flame extinguishes.

The product shall satisfy all of the following criteria:

1. EN 60332-1-2

Under conditions of surface flame attack, and with an exposure time in accordance with EN 60332-1-2:2004, Table 1, there shall be no flame spread (/-/) in excess of 425 mm before the test flame extinguishes.

2. EN 50399 with 20,5 kW flame source

THR_1200s< 70 MJ

Peak HRR < 400 kW

FIGRA < 1 300 Ws'¹

The product shall satisfy all of the following criteria:

1. EN 60332-1-2

Under conditions of surface flame attack, and with an exposure time in accordance with EN 60332-1-2:2004, Table 1, there shall be no flame spread (H) in excess of 425 mm before the test flame extinguishes.

2. EN 50399 with 20,5 kW flame source

FS < 2,0 m

THR_1200s< 30 MJ

Peak HRR < 60 kW

FIGRA < 300 Ws'¹

The product shall satisfy all of the following criteria:

1. EN 60332-1-2

Under conditions of surface flame attack, and with an exposure time in accordance with EN 60332-1-2:2004, Table 1, there shall be no flame spread (H) in excess of 425 mm before the test flame extinguishes.

2. EN 50399 with 20,5 kW flame source

FS < 1,5 m

THR_1200s < 15 MJ

Peak HRR < 30 kW

FIGRA < 150 Ws'¹

The product shall satisfy all of the following criteria:

1. EN 60332-1-2

Under conditions of surface flame attack, and with an exposure time in accordance with EN 60332-1-2:2004, Table 1, there shall be no flame spread (/-/) in excess of 425 mm before the test flame extinguishes.

2. EN 50399 with 30 kW flame source

FS< 1,75 m

THR_1200s< 10 MJ

Peak HRR < 20 kW

FIG RA < 120 Ws’¹

The product as a whole, excluding metallic materials, and any external component (i.e. sheath) of the product, shall achieve the criteria given in

EN ISO 1716

PCS < 2,0 MJ/kg

Products classified Bica, B2_ca, C^, D_ca obtain an additional classification of s1, s1a, s1b, s2 or s3 regarding the smoke production.

The product shall satisfy both of the following criteria:

• TSP nogs - 50 m ;

• Peak SPR S 0,25 m²/s.

The product shall satisfy both of the following criteria:

• Compliance with s1;

• Transmittance > 80 %.

The product shall satisfy both of the following criteria:

• Compliance with s1;

• Transmittance > 60 % < 80 %.

The product shall satisfy both of the following criteria:

• TSPi2oos — 400 m :

• Peak SPR < 1,5 m²/s.

Products for which no performance is declared or which do not comply with the s1 and s2 criteria.

Products classified B1ca, B2ca, Cea, Dea obtain an additional classification of dO, d1 or d2 regarding the production of flaming droplets and/or particles:

• dO, if no flaming droplets/particles occur within 1 200 s;

• d1, if no flaming droplets/particles persisting longer than 10 s occur within 1 200 s;

• d2, products for which no performance is declared or which do not comply with the dO and d1 criteria.

9.11 Additional classifications a1, a2, a3 for acidity

Products classified 61«,, B2ca,Cca, Dea obtain an additional classification a1, a2, a3 regarding acidity:

• a1, if a conductivity of<2,5pS/mm and a pH >4,3 are obtained when tested in accordance with EN 50267-2-3;

• a2, if a conductivity of<10pS/mm and a pH >4,3 are obtained when tested in accordance with EN 50267-2-3;

• a3, if no performance is declared, or if the product does not comply with the a1 and a2 classification criteria in EN 50267-2-3

10. Presentation of classification

The following classes for cables are covered by this standard:

B1ca-s1,d0,a1

В1_и-51^0,а2

B1ca-s1,d0,a3

B1ca-s2,d0,a1

B1ca-s2,d0,a2

B1_ca-s2,d0,a3

B1ca-s1,d1,a1

B1ca-s1.d1.a2

B1ca-s1,d1,a3

B1ca-s2,d1,a1

B1ca-s2,d1,a2

B1ca-s2,d1,a3

B1ca-s1,d2,a1

B1ca-s1,d2,a2

B1ca-s1.d2,a3

B1ca-s2,d2,a1

Bica-s2,d2,a2

B1ca-s2,d2,a

3

E

ca

ca

NOTE 1 When a classification includes s3 and/or d2, this means that there is no limit set for smoke production and/or flaming droplets/particles.

NOTE 2 There is no obligation to declare a3 if acidity is not determined.

10. Field of application of the classification

The reaction to fire classification for electric cables is valid for the product as tested.

The reaction to fire classification may be valid for products within the same family, where family is defined as a range of products within defined limits of variability of its parameters, for which the reaction to fire classification is proven to be unchanged.

Extension of the field of application can only be done in accordance with the relevant extended application standard CLC/FprTS 50576.

10. Classification report

    1. General

The aim of the classification report is to provide a harmonized way of presenting the classification of a product, based on results obtained during tests in accordance with the reaction to fire test methods for electric cables.

A classification report is expected to detail the basis and the results of the classification process.

The classification report shall have the following content and format (see Annex A):

1. identification number and date of the classification report;

2. identification of the owner of the classification report;

3. identification of the organization issuing the classification report;

4. details of the nature and use of the product under classification, including its commercial name(s);

5. detailed description of the product;

Reference is made to a detailed description of the product as available in one of the test reports in support of this classification, or a detailed description is reproduced in this classification report. The detailed description shall include a full description and identification of all relevant components and the method of assembly etc. If generic products are used a general description is sufficient. It shall also include relevant product specifications applicable to the whole or parts of the classified product.