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IEC 60331-21 : 1.0

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IEC 60331-21 : 1.0

TESTS FOR ELECTRIC CABLES UNDER FIRE CONDITIONS - CIRCUIT INTEGRITY - PROCEDURES AND REQUIREMENTS - CABLES OF RATED VOLTAGE UP TO AND INCLUDING 0,6/1,0 KV

International Electrotechnical Committee

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Table of Contents

Foreword<br>Introduction<br>1 Scope<br>2 Normative references<br>3 Definition<br>4 Sample preparation<br>5 Continuity checking arrangements<br>6 Test procedure<br>7 Performance requirement<br>&nbsp;&nbsp;&nbsp;&nbsp;7.1 Flame application time<br>&nbsp;&nbsp;&nbsp;&nbsp;7.2 Acceptance criteria<br>8 Retest procedure<br>9 Test report<br>Annex A (normative) Fuse characteristic curve<br>Figure 1 - Basic circuit diagram

Abstract

Gives the test procedure and performance requirement which includes a recommended flame application time, for cables of rated voltages up to and including 0,6/1,0 kV needed to maintain circuit integrity when subjected to fire under specified conditions. Describes the means of continuity checking arrangements, electrical testing procedure, method of burning and gives requirements for evaluating test results. Meant to cover low voltage power cables and control cables with rated voltage.

General Product Information

Document Type Standard
Status Current
Publisher International Electrotechnical Committee
Committee TC 20
Supersedes
  • IEC 60331 : 1ED 70