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BS EN IEC 60331-1:2019

BS EN IEC 60331-1:2019

$167.15

Tests for electric cables under fire conditions. Circuit integrity – Test method for fire with shock at a temperature of at least 830°C for cables of rated voltage up to and including 0,6/1,0 kV and with an overall diameter exceeding 20 mm

Published By Publication Date Number of Pages
BSI 2019 34
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This part of IEC 60331 specifies the test method for cables which are required to maintain circuit integrity when subject to fire and mechanical shock under specified conditions.

This document is applicable to cables of rated voltage not exceeding 600 V/1 000 V, including those of rated voltage below 80 V, metallic data and telecom cables and optical fibre cables.

It is intended for use when testing cables of greater than 20 mm overall diameter.

Cables of smaller diameter are intended to be tested using the apparatus, procedure and requirements of IEC 60331-2.

This document includes details for the specific point of failure, continuity checking arrangement, test sample, test procedure and test report relevant to electric power and control cables with rated voltage up to and including 600 V/1 000 V. Details for the specific point of failure, continuity checking arrangement, test sample, test procedure and test report relevant to metallic data and telecom cables and optical fibre cables are not given by IEC 60331-1.

Although the scope is restricted to cables with rated voltage up to and including 0,6/1,0 kV, the procedure can be used, with the agreement of the manufacturer and the purchaser, for cables with rated voltage up to and including 1,8/3 (3,3) kV, provided that suitable fuses are used.

Annex A provides the method of verification of the burner and control system used for the test.

Requirements are stated for an identification that may optionally be marked on the cable to signify compliance with this document.

CAUTION – The test given in this standard may involve the use of dangerous voltages and temperatures. Suitable precautions should be taken against the risk of shock, burning, fire and explosion that may be involved, and against any noxious fumes that may be produced.

PDF Catalog

PDF Pages PDF Title
2 National foreword
7 English
CONTENTS
9 FOREWORD
11 INTRODUCTION
12 1 Scope
2 Normative references
13 3 Terms and definitions
4 Test environment
5 Test apparatus
5.1 Test equipment
15 Figures
Figure 1 – Schematic diagram of test configuration
16 Figure 2 – Plan view of fire test equipment
17 5.2 Test ladder and mounting
Figure 3 – End elevation of fire test equipment (not to scale)
18 5.3 Source of heat
5.3.1 Burner
Figure 4 – Typical rubber bush for supporting the test ladder
19 5.3.2 Flow meters and flow rates
Figure 5 – Burner face
20 5.3.3 Verification
5.4 Shock producing device
Figure 6 – Schematic diagram of an example of a burner control system
21 5.5 Positioning of source of heat
5.6 Continuity checking arrangements for electric power and control cables with rated voltage up to and including 600 V/1 000 V
5.7 Fuses
6 Test specimen (electric power and control cables with rated voltage up to and including 600 V/1 000 V)
6.1 Test specimen preparation
22 6.2 Test specimen mounting
6.2.1 Single core cables with concentric metal layer and multicore cables
Figure 7 – Example of method of mounting a larger diameter test specimen for test(with a bending radius between approximately 200 and 400 mm)
23 Figure 8 – Detailed section of adjustable position of vertical ladder elementsfor mounting a smaller diameter test specimen for test (with a maximumbending radius of approximately 200 mm)
24 6.2.2 Single core cables without concentric metal layer
Figure 9 – Example of method of mounting test specimen with a bending radiusin normal use larger than approximately 400 mm
25 7 Test procedure (electric power and control cables with rated voltage up to and including 600 V/1 000 V)
7.1 Test equipment and arrangement
7.2 Electrical connections
Figure 10 – Method of mounting test specimen of a single core cablewithout concentric metal layer
27 7.3 Flame and shock application
7.4 Electrification
Figure 11 – Basic circuit diagram – Electric power and control cableswith rated voltage up to and including 600 V/1 000 V
28 8 Performance requirements (electric power and control cables with rated voltage up to and including 600/1 000 V)
8.1 Flame application time
8.2 Acceptance criteria
9 Retest procedure
10 Test report (electric power and control cables with rated voltage up to and including 600 V/1 000 V)
11 Cable marking
29 Annex A (normative)Verification procedure for the source of heat
A.1 Measuring equipment
A.2 Procedure
Figure A.1 – Temperature measuring arrangement
30 A.3 Evaluation
A.4 Further verification
A.5 Verification report
31 Annex B (informative)Guidance on the choice of recommended test apparatus(burner and venturi)
32 Bibliography

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BS EN IEC 60331-1:2019
$167.15