1 Scope
This Part of GB/T 9330 specifies the technical requirements of polyvinyl chloride insulated and sheathed control cable with rated voltage≤450/750V.
This Part is applicable to the polyvinyl chloride insulated and sheathed control cables with rated voltage≤450/750V applied in the control and monitoring loops as well as in the protective lines.
All the cables shall be in accordance with the corresponding requirements specified in GB/T 9330.1-2008 and all models of cables shall be respectively in accordance with the special requirement specified in this Part.
2 Normative References
The following standards contain provisions which, through reference in this Part of GB/T 9330, constitute provisions of this standard. For dated reference, subsequent amendments to or revisions of, any of these publications (excluding correction content) do not apply. However, the parties whose enter into agreement according to this Standard are encouraged to research whether the latest editions of these documents are applied or not. For undated references, the latest edition of the normative document is applicable to this standard.
" 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" (GB/T 2951.11-2008) (IEC 60811-1-1: 2001, IDT).
"Common Test Methods for Insulating and Sheathing Materials of Electric and Optical Cables-Part 12: Methods for General Application-Thermal Ageing Methods" (GB/T 2951.12-2008) (IEC 60811-1-2: 1985, IDT)
"Common Test Methods for Insulating and Sheathing Materials of Electric and Optical Cables—Part 14:Methods for General Application—Test at Low Temperature (GB/T 2951.14-2008) (IEC 60811-1-4:1985, IDT)
"Common Test Methods for Insulating and Sheathing Materials of Electric and Optical Cables-Part 31: Methods Specific to PVC Compounds-Pressure Test at High Temperature-Test for Resistance to Cracking" (GB/T 2951.31-2008) (IEC 60811-3-1:1985, IDT)
"Common Test Methods for Insulating and Sheathing Materials of Electric and Optical Cables-Part 31: Methods Specific to PVC Compounds-Loss of Mass Test—Thermal Stability Test" (GB/T 2951.32-2008) (IEC 60811-3-2: 1985, IDT)
"Protective coverings for electric cables; Part 1:General" (GB/T 2952.1-1989 )
" Test Methods for Electrical Properties of Electric Cables and Wires—Part 4:Test of DC Resistance of Conductors" (GB/T 3048.4-2007)
"Test Methods for Electrical Properties of Electric Cables and Wires-Part 5:Test of Insulation Resistance" (GB/T 3048.5-2007)
"Test Methods for Electrical Properties of Electric Cables and Wires—Part 8:AC voltage test" (GB/T 3048.8-2007)
"Plastic Insulated Control Cables - Part 1: General Requirements" (GB/T 9330.1 - 2008)
"Flame Retardant and Fire Resistant Wires and Cables General" (GB/T 19666-2005)
3 Operating Characteristics
3.1 Rated voltage
Rated voltage U0/U is 450/750 V.
3.2 Operating temperature of cable
Long-term allowable operating temperature of cable conductors is 70℃.
3.3 Laying temperature of cable
Laying temperature of cable shall not be less than 0℃.
3.4 Allowable bending diameter of cable
——For the cable without armor layer, it shall not be less than 6 times of the outside diameter of cable;
——For the cable with armor or in copper tape shield structure, it shall not be less than 12 times of the outside diameter of cable;
——For the cable without armor layer, it shall not be less than 6 times of the outside diameter of cable;
