This standard specifies type, specification, symbol, code, product expression method, service characteristics, technical requirements, test, product acceptance rules, finished cable marking and cable packaging, transport and storage of underground electrical cable for airport lighting circuits.
This standard is applicable to manufacture, acceptance and delivery of underground electrical cable for main circuits of airport lighting and signal light system.
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this standard. However parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 2951.11-2008 Common Test Methods for Insulating and Sheathing Materials of Electric and Optical Cables - Part 11: Methods for General Application - Measurement of Thickness and Overall Dimensions - Tests for Determining the Mechanical Properties (IEC 60811-1-1.2001, IDT)
GB/T 2951.12-2008 Common Test Methods for Insulating and Sheathing Materials of Electric and Optical Cables - Part 12: Methods for General Application - Thermal Ageing Methods (IEC 60811-1-2:1985, IDT)
GB/T 2951.13-2008 Common Test Methods for Insulating and Sheathing Materials of Electric and Optical Cables - Part 13: Methods for General Application - Measurement for Determining the Density - Water Absorption Tests - Shrinkage Test (IEC 60811-1-3 2001, IDT)
GB/T 2951.14-2008 Common Test Methods for Insulating and Sheathing Materials of Electric and Optical Cables - Part 14: Methods for General Application - Test at Low Temperature (IEC 60811-1-4:1985, IDT)
GB/T 2951.21-2008 Common Test Methods for Insulating and Sheathing Materials of Electric and Optical Cables - Part 21: Methods Specific to Elastomeric Compounds - Ozone Resistance, Hot Set and Mineral Oil Immersion Tests (KEC 60811-2-1:2001, IDT)
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3 Terms and Definitions
For the purpose of this standard, the following terms and definitions apply.
3.1
nominal value
specified quantity value
Note: In this standard, as for the quantity value evolved from nominal value, generally the specified tolerance is considered, and it is inspected through measurement.
3.2
median value
the value in the middle of several values obtained from test which are arranged in increasing (or decreasing) order in case the number of values is odd, or the mean value of two values in the middle of such values arranged as above in case the number of values is even
