RVV cable is a common type of cable, and its quality and safety are strictly regulated by national standards. This paper will deeply interpret the national standard implementation standard of RVV cable, and discuss the key links of its testing process.

First, the national standard implementation standard of RVV cable

According to the national standard GB/T 5023.5-2008 "Rated voltage 450/750V and below PVC insulated wire and cable" and industry standard JB/T 8734.2012 "Rated voltage 450/750V and below PVC insulated flexible wire", The performance specifications of RVV cables include conductor DC resistance, insulation resistance, insulation voltage resistance, and bending resistance. These indicators are the basis to ensure the normal operation of the cable, but also the key to the implementation of the national standard.

Second, RVV cable detection process

The inspection process of RVV cable covers many aspects such as conductor, insulation layer, sheath layer and the whole cable. Specific test items include:

1. Conductor: Test conductor material, structure, DC resistance, AC resistance, etc.

2. Insulation layer: Test the material, thickness, color, insulation resistance, insulation voltage resistance, thermal aging performance, etc.

3. Sheath layer: Test the material, thickness, color, bending resistance, wear resistance, oil resistance and so on.

4. Cable as a whole: test the appearance, size, weight, length, mark, mechanical strength, burning performance and so on.

Iii. National Standard testing standards for RVV cables According to the relevant national standards, the testing standards for RVV cables include:

5. Conductor resistance: meet the requirements specified in GB/T3956-2008 "Conductor of Cable".

6. Insulation resistance: meet the requirements specified in GB/T3048.5-2007 "Electrical performance test methods for wire and cable Part 5 Insulation resistance Test".

7. Voltage test: in line with GB/T5013.4-2008 "Rated voltage 450/750V and below rubber insulated cable Part 4: Flexible wire and flexible cable" requirements.

8. Insulation thickness: meet the requirements specified in GB/T5023.3-2008 "Rated voltage 450/750V and below polyvinyl chloride insulated cables Part 3: Flexible wires and cables for connection".

9. Sheath thickness: meet the requirements specified in GB/T5023.3-2008 "Rated voltage 450/750V and below polyvinyl chloride insulated cables Part 3: Flexible wires and cables for connection".

In addition, the RVV national standard cable also needs to carry out appearance inspection, mark inspection, outer diameter and size inspection. Specific testing standards can be referred to GB/T5023.2-2008 "Rated voltage 450/750V and below polyvinyl chloride insulated cables Part 2: Test methods".

Four, RVV cable national standard cable testing standard reference file

1.GB/T 5023.5-2008 "Rated voltage 450/750V and below PVC insulated wire and cable"

2.JB/T 8734.2012 "Rated voltage 450/750V and below PVC insulated flexible wire"

3.GB/T 2951.1-2008 "General Test method Part 1: Environmental Test method"

4.GB/T 2951.2-2008 "General Test methods Part 2: Mechanical test methods"

5.GB/T 2951.3-2008 "General test methods Part 3: Electrical test methods"

6.GB/T 2951.4-2008 "General test methods Part 4: Fire test methods"

Through the in-depth analysis of the national standard implementation standards and testing processes of RVV cables, we can better understand the quality and safety safeguards, provide a reference for relevant technical personnel, and ensure the safe operation of the power system.

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