RO
SR EN 60332-3-21:2010
Tests on electric and optical fibre cables under fire conditions -- Part 3-21: Test for vertical flame spread of vertically-mounted bunched wires or cables - Category A F/R
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. Has the status of a group safety publication in accordance with IEC Guide 104.
Status :
Withdrawn
Approval date : 6/30/2010
Publish date : 7/2/2010
Withdrawal date : 8/17/2021
Number of pages : 16
ICS : 13.220.40 Ignitability and burning behaviour of materials and products,29.020 Electrical engineering in general,29.060.20 Cables
Technical Committee : 159 - Electric cables
- Replaces SR EN 50266-2-1:2003
- Normative reference SR EN 60811-1-3:1996
- Normative reference SR EN 60332-3-10:2010
- Normative reference SR EN 60695-4:2007
- Replaced by SR EN IEC 60332-3-21:2019