GB/T 18380.12-2008: Test on electric and optical fibre cables under fire conditions -- Part 12: Test for vertical flame propagation for a single insulated wire or cable -- Procedure for 1kW pre-mixed flame

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Scope

This Part of GB/T 18380 specifies the test method for the vertical flame propagation of
a single wire or cable under flame conditions. The test device is specified in GB/T
18380.11-2008.
NOTE 1: If necessary, the test in GB/T18380.12-2008 can be carried out simultaneously with
the test in GB/T18380.13-2008.
The recommended performance requirements are given in Appendix A.
This Part specifies the conventional usage of 1kW pre-mixed flame. It is not applicable
to testing small-sized single wires and cables with a total cross-section area of less
than 0.5 mm2, because the conductors shall be melted before the end of the test; and
it is neither applicable to the small optical cables, because the optical cable shall break
before the end of the test. In these cases, the test method can refer to GB/T 18380.22-
2008.
NOTE 2: The use of wires and cables that can delay the spread of flames and meet the
requirements of this Standard is not sufficient to ensure that the wires and cables can prevent
the spread of flames under all laying conditions. Therefore, in some occasions with high risk of
spreading, for example in long vertical runs of bunches of cable, special installation precautions
shall also be taken. It shall not be considered that the cable sample meets the performance
requirements specified in this Standard, and the bundled cable shall also show similar
performance (see GB/T18380.31~18380.36 series of standards).

Basic Data

Standard ID	GB/T 18380.12-2008 (GB/T18380.12-2008)
Description (Translated English)	Test on electric and optical fibre cables under fire conditions -- Part 12: Test for vertical flame propagation for a single insulated wire or cable -- Procedure for 1kW pre-mixed flame
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	K13
Classification of International Standard	29.060.20
Word Count Estimation	9,981
Date of Issue	2008-06-26
Date of Implementation	2009-04-01
Quoted Standard	GB/T 16499-1996; GB/T 18380.11-2008; IEC 60695-4-1993
Adopted Standard	IEC 60332-1-2-2004, IDT
Regulation (derived from)	Announcement of Newly Approved National Standards No. 10 of 2008 (total 123)
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This standard specifies under fire conditions, a single wire or fiber optic cable vertical flame spread test method. Test device in GB/T 8380. 11-2008 forth.