IEC 60332-1-1-2015 pdf download.Tests on electric and optical fibre cables under fire conditions – Part 1-1: Test for vertical flame propagation for a single insulated wire or cable – Apparatus.
This part of IEC 60332 specifies the test apparatus for testing the resistance to vertical flame propagation for a single vertical electrical insulated conductor or cable, or optical fibre cable, under fire conditions.
The procedure, together with an informative annex of recommended requirements for performance, is given in IEC 60332-1 -2.
2 Normative references
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 60695-4, Fire hazard testing – Part 4: Terminology concerning fire tests
IEC 60695-1 1 -2, Fire hazard testing – Part 11-2: Test flames – 1 kW nominal pre-mixed flame – Apparatus, confirmatory test arrangement and guidance
IEC Guide 1 04, The preparation of safety publications and the use of basic safety publications and group safety publications
3 Terms and definitions
For the purposes of this document, the following definition applies. The definition is taken from IEC 60695-4.
3.1 ignition source
source of energy that initiates combustion
4 Test apparatus
4.1 Components
The test apparatus shall comprise the following:
a) a metal enclosure (4.2);
b) an ignition source (4.3);
c) a suitable chamber (4.4).
4.2 Metal enclosure
A metal enclosure (1 200 ± 25) mm high, (300 ± 25) mm wide and (450 ± 25) mm deep with open front and closed top and bottom, (see Figure 1 ), shall be used, in order to protect the test sample from draughts. It shall be constructed of rigid sheet metal.
4.3 Ignition source
The ignition source shall comply with IEC 60695-1 1 -2, which includes a method of confirmation of the test flame, except that the laboratory fumehood/chamber shall comply with 4.4.
4.4 Chamber
The metal enclosure and ignition source shall be contained within a suitable chamber, substantially free from draughts during the test duration, but with facilities for disposing of noxious gases resulting from burning. The chamber shall be maintained at a temperature of (23 ± 1 0) °C.
NOTE 1 If the requirement for the draught-free closed area is met by the use of a standard fume cupboard, it must be capable of independent operator-control of the extractor fan such as to permit operation with the extractor “OFF”. Some fume cupboards may not be supplied with this facility.
NOTE 2 If a fume cupboard is used as the draught-free test area, the following safe operating practice is recommended:
a) turn off extractor fan, seal the outlet;
b) pull down front door of fume cupboard to leave a gap sufficient to manipulate burner into position;
c) ensure operator is protected;
d) do not move the door of the fume cupboard during the test;
e) at the end of the test evacuate the fume cupboard fully before opening the door.IEC 60332-1-1 pdf download.