IEC 60287-3-1:2017 ED2

Electric cables - Calculation of the current rating - Part 3-1: Operating conditions - Site reference conditions IEC 60287-3-1:2017 ED2

Publication date:   Jun 8, 2017

General information

60.60 Standard published   Jun 8, 2017

IEC

TC 20

International Standard

29.060.20   Cables

Buying

Published

Language in which you want to receive the document.

Scope

IEC 60287-3-1:2017 is available as IEC 60287-3-1:2017 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 60287-3-1:2017 is applicable to the conditions of steady-state operation of cables at all voltages, buried directly in the ground, in ducts, troughs or in steel pipes, both with and without partial drying-out of the soil, as well as cables in air. The term "steady state" is intended to mean a continuous constant current (100 % load factor) just sufficient to produce asymptotically the maximum conductor temperature, the surrounding ambient conditions being assumed constant. This document defines site reference conditions, however the general values are superseded by specific national requirements. This edition includes the following significant technical changes with respect to the previous edition:
- the updated list of national laying conditions is now covered in Annex A;
- Clause 5 about the information required from the purchaser for the selection of the appropriate type of cable has been removed.

Life cycle

NOW

PUBLISHED
IEC 60287-3-1:2017 ED2
60.60 Standard published
Jun 8, 2017