Power cables with extruded insulation and their accessories for rated voltages from 1kV (Um=1.2kV) up to 35kV (Um=40.5kV) - Part 1: Cables for rated voltage of 1kV (Um=1.2kV) and 3kV (Um=3.6kV)
This part of GB/T 12706 specifies the construction, dimensions and test requirements of power cables with extruded insulation for rated voltages of 1kV (Um=1.2kV) and 3kV (Um=3.6kV) for fixed installations such as distribution networks or industrial installations.
This part includes flame-retardant, low-smoke and halogen-free cables.
Cables for special installation and service conditions are not included, for example, cables for overhead networks, the mining industry, nuclear power plants (in and around the containment area), submarine use or shipboard application.
Contents Foreword I 1 Scope 2 Normative References 3 Terms and Definitions 4 Voltage Designations and Materials 5 Conductors 6 Insulation 7 Assembly of Multicore Cables, Inner Coverings and Fillers 8 Metallic Layers for Single-core and Multicore Cables 9 Metallic Screen 10 Concentric Conductor 11 Lead Sheath 12 Metallic Armour 13 Oversheath 14 Test Conditions 15 Routine Tests 16 Sample Tests 17 Type Tests, Electrical 18 Type Tests, Non-electrical 19 Electrical Tests after Installation 20 Supplementary Provisions for Cable Products Annex A (Normative) Fictitious Calculation Method for Determination of Dimensions of Protective Coverings Annex B (Normative) Rounding of Numbers Annex C (Normative) Determination of Hardness of HEPR Insulations Annex D (Normative) Supplementary Provisions for Cable Products
