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)
1 Scope
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
