1.1 Scope
This Part of GB/T 5013 applies to rigid and flexible cables with insulation, and sheath if any, based on vulcanized rubber of rated voltages U0/U up to and including 450/750 V used in power installations of nominal voltage not exceeding 450/750 V a.c.
Note: For some types of flexible cables the term ‘cord’ is used.
The particular types of cables are specified in GB/T 5013.3, GB/T 5013.4, etc. The code designations of these types of cables are given in Appendix A.
The test methods specified in Parts 1 to 8 of GB/T 5013 are given in GB/T 5013.2, GB/T 18380.1 and in the relevant parts of GB/T 2951.
1.2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this Part of GB/T 5013. At the time of publication, the editions indicated were valid. All normative documents are subject to revision and parties to agreements based on this Part are encouraged to investigate the possibility of applying the most recent editions of the normative documents listed below.
GB/T 2951.1-1997 Common test methods for insulating and sheathing materials of electric cables — Part 1: Methods for general application — Section 1: Measurement of thickness and overall dimensions — Tests for determining the mechanical properties (idt IEC 60811-1-1:1993)
GB/T 2951.2-1997 Common test methods for insulating and sheathing materials of electric cables — Part 1: Methods for general application — Section 2: Thermal ageing methods (idt IEC 60811-1-2:1985)
GB/T 2951.4-1997 Common test methods for insulating and sheathing materials of electric cables — Part 1: Methods for general application —Section 4: Tests at low temperature (idt IEC 60811-1-4:1985)
GB/T 2951.5-1997 Common test methods for insulating and sheathing materials of electric cables — Part 2-1: Methods specific to elastomeric compounds — Ozone resistance, hot set andmineral oil immersion tests (idt IEC 60811-2-1:1985)
GB/T 2951.6-1997 Common test methods for insulating and sheathing materials of electric cables — Part 3: Methods specific to PVC compounds — Section 1: Pressure test at high temperature — Tests for resistance to cracking (idt IEC 60811-3-1:1985)
GB/T 3956 Conductors of insulated cables (GB/T 3956-1997, idt IEC 60228:1978)
GB/T 5013.2-2008 Rubber insulated cables — Rated voltages up to and including 450/750 V — Part 2: Test methods (IEC 60245-2:1998, IDT)
GB/T 5013.3 Rubber insulated cables — Rated voltages up to and including 450/750 V — Part 3: Heat resistant silicone insulated cables (GB/T 5013.3-2008, IEC 60245-3:1994, IDT)
GB/T 5013.4 Rubber insulated cables — Rated voltages up to and including 450/750 V — Part 4: Cords and flexible cables (GB/T 5013.4-2008, IEC 60245-4:2004, IDT)
GB/T 5013.7-2008 Rubber insulated cables — Rated voltages up to and including 450/750 V — Part 7: Heat resistant ethylene-vinyl-acetate rubber insulated cables (IEC 60245-7:1994, IDT)
GB/T 18380.1 Tests on electric cables under fire conditions — Part 1: Test on a single vertical insulated wire or cable (GB/T 18380.1-2001, IEC 60332-1:1993, IDT)
2 Terms and Definitions
For the purposes of each part of GB/T 5013, the following terms and definitions apply:
2.1 Definitions relating to insulating and sheathing materials
2.1.1
Type of compound
Category in which a compound is placed according to its properties, as determined by specific tests.
Note: The type designation is not directly related to the composition of the compound.
2.1.2
Rubber compound
Combination of materials suitably selected, proportioned, treated and vulcanized, of which the characteristic constituent is a rubber and/or synthetic elastomer.
Note: Vulcanization is defined as a post-application treatment taking place after the insulation and/or sheath has been applied in order to induce permanent cross-linking of the elastomer.
2.1.3
Polychloroprene compound (PCP) or other equivalent synthetic elastomer
Vulcanized compound in which the elastomer is polychloroprene or other equivalent synthetic elastomer providing a compound with properties similar to PCP.
2.1.4
Ethylene-vinyl acetate rubber compound (EVA) or other equivalent synthetic elastomer
Cross-linked compound in which the elastomer is ethylene-vinyl acetate or other equivalent synthetic elastomer providing a compound with properties similar to EVA.
2.1.5
