GB/T 22577-2025Class 1E cables for nuclear power generating stations - General requirements (English PDF)

1 Scope

This document specifies the categories, general requirements, equipment qualification rules, test methods, and required documents for Class 1E cables used in nuclear power plants.

document.

This document applies to Class 1E cables used in nuclear power plants, including power cables, control cables, instrumentation (compensating) cables, coaxial cables, etc.

Class. For general requirements of other cables, refer to this document.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.

This document.

GB/T 2406.2 Determination of flammability of plastics by oxygen index method - Part 2.Room temperature test

GB/T 2406.3 Determination of flammability of plastics by oxygen index method - Part 3.High temperature test

GB/T 2900.10 Electrical Terminology - Cables

GB/T 11026.1 Electrical insulating materials - Heat resistance - Part 1.Aging procedures and evaluation of test results

GB/T 11026.2 Electrical insulating materials - Heat resistance - Part 2.Selection of test criteria

GB/T 11026.4 Heat resistance of electrical insulating materials - Part 4.Aging oven - Single-chamber oven

GB/T 12706.2-2020 Extruded Insulated Power Cables with Rated Voltages from 1kV (Um=1.2kV) to 35kV (Um=40.5kV)

And Annex Part 2.Cables with rated voltage of 6kV (Um=7.2kV) and 30kV (Um=36kV)

GB/T 12706.3-2020 Extruded Insulated Power Cables with Rated Voltages from 1kV (Um=1.2kV) to 35kV (Um=40.5kV)

And Annex Part 3.Cables with a rated voltage of 35kV (Um=40.5kV)

GB/T 12727-2023 Safety Assessment of Critical Electrical Equipment in Nuclear Power Plants

GB/T 17650.1 Test methods for gases released during combustion of materials taken from cables or optical fibers - Part 1.Total amount of halogen acid gases

Measurement

GB/T 17650.2 Test methods for gases released during combustion of materials derived from cables or optical fibers - Part 2.Acidity (measured by pH)

Measurement of quantity and conductivity

GB/T 18380.12-2022 Cables and optical fibers - Burning tests under flame conditions - Part 12.Single-strand insulated wires and cables

Vertical Flame Propagation Test Method for 1kW Premixed Flame

GB/T 18380.33-2022 Cables and optical fibers - Burning tests under flame conditions - Part 33.Vertically installed bundled wires

Cable flame vertical propagation test (Class A)

GB/T 18380.34-2022 Cables and optical fibers - Burning tests under flame conditions - Part 34.Vertically installed bundled wires

Cable flame vertical propagation test Class B

GB/T 18380.35-2022 Cables and optical fibers - Burning tests under flame conditions - Part 35.Vertically mounted bundled wires

Cable flame vertical propagation test Class C

GB/T 18380.36-2022 Cables and optical fibers - Burning tests under flame conditions - Part 36.Vertically mounted bundled wires

Cable flame vertical propagation test Class D

GB/T 19666 | GB/T 18890.1 | GB/T 18890.2 | GB/T 13849 | GB/T 13029.1 | […]