IEC 60332-3-21:2000 ED1

Tests on electric cables under fire conditions - Part 3-21: Test for vertical flame spread of vertically-mounted bunched wires or cables - Category A F/R

Publication date:   Oct 9, 2000

General information

99.60 Withdrawal effective   Jul 13, 2018

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IEC

TC 20

International Standard

13.220.40   Ignitability and burning behaviour of materials and products | 29.020   Electrical engineering in general | 29.060.20   Cables

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Scope

IEC 60332-3-21:2000 Specifies method of test for the assessment of vertical flame spread of vertically-mounted bunched wires or cables, electrical or optical, under defined conditions. The test is intended for type approval testing. The requirements for the selection of cables for testing are given. The flame spread is measured as the extent of damage of the cable sample. This procedure may be used to demonstrate the cable's ability to limit flame spread. Covers category A F/R and relates only to power cables of conductor cross-sectional area greater than 35 mm2 installed on the test ladder in a spaced configuration on the front and rear to achieve a nominal total volume of non-metallic material of 7 l/m of test sample. The flame application time is 40 min. This method of mounting is intended for special cable designs used in particular installations when required in the cable specification. Category A F/R is not intended for general use. A recommended performance requirement is also given.
It has the status of a horizontal standard in accordance with IEC Guide 104.

Life cycle

PREVIOUSLY

WITHDRAWN
IEC TS 60332-3:1992 ED2

NOW

WITHDRAWN
IEC 60332-3-21:2000 ED1
99.60 Withdrawal effective
Jul 13, 2018

REVISED BY

PUBLISHED
IEC 60332-3-21:2018 ED2