GB/T 12706.1-2020 Translated English of Chinese Standard. (GBT 12706.1-2020, GB/T12706.1-2020, GBT12706.1-2020): Power Cables with Extruded Insulation and Their Accessories for Rated Voltages from 1 kV (Um = 1.2 kV) up to 35 kV (Um = 40.5 kV) - Part 1: Cables for Rated Voltage of 1 kV (Um = 1.2 kV) and 3 kV (Um = 3.6 kV)

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https://www.chinesestandard.net, 22 mai 2021 - 82 pages
This Part of GB/T 12706 specifies the structure, dimensions and test requirements for power cables with extruded insulation for rated voltage of 1 kV (Um = 1.2 kV) and 3 kV (Um = 3.6 kV). This Part is applicable to power cables with extruded insulation for rated voltage of 1 kV (Um = 1.2 kV) and 3 kV (Um = 3.6 kV) for fixed installations in distribution networks or industrial units.
 

Pages sélectionnées

Table des matières

Foreword
4
Scope
11
Terms and Definitions
14
Voltage Marking and Materials
15
Conductors
18
Cores Inner Coverings and Fillers of Multicore Cables
21
Metallic Layers for Singlecore or Multicore Cables
24
Concentric Conductor
25
Test Conditions
32
Sample Tests
34
Electrical Type Tests
41
Nonelectrical Type Tests
44
Electrical Tests after Installation
53
Appendix A normative Fictitious Calculation Method for Determination of Dimensions of Protective Coverings
61
Appendix B normative Roundingoff of Numerical Values
69
normative Measurement and Calculation of Overlap Rate and Clearance Rate
72

Lead Sheath
26
Oversheath
30
normative Determination of Hardness of HEPR Insulations
73
Appendix E normative Supplementary Clauses for Cable Products
76

Expressions et termes fréquents

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