IEC 60287-1-1:2006
Electric cables - Calculation of the current rating - Part 1-1: Current rating equations (100 % load factor) and calculation of losses - General

Standard No.

IEC 60287-1-1:2006

Release Date

2006

Published By

International Electrotechnical Commission (IEC)

Status

Be replaced

Replace By

IEC 60287-1-1/COR1:2006

Latest

IEC 60287-1-1:2023 CMV

Replace

IEC 20/851/FDIS:2006 IEC 60287-1-1:1994 IEC 60287-1-1 AMD 1:1995 IEC 60287-1-1 AMD 2:2001 IEC 60287-1-1 Edition 1.2:2001 IEC 60287-1-1 Edition 1.2 Corrigendum 1:2006

Scope

This part of IEC 60287 is applicable to the conditions of steady-state operation of cables at all alternating voltages, and direct voltages up to 5 kV, 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 part provides formulae for current ratings and losses. The formulae given are essentially literal and designedly leave open the selection of certain important parameters. These may be divided into three groups: – parameters related to construction of a cable (for example, thermal resistivity of insulating material) for which representative values have been selected based on published work; – parameters related to the surrounding conditions, which may vary widely, the selection of which depends on the country in which the cables are used or are to be used; – parameters which result from an agreement between manufacturer and user and which involve a margin for security of service (for example, maximum conductor temperature).

IEC 60287-1-1:2006 history

• 0000 IEC 60287-1-1:2023 CMV
• 2014 IEC 60287-1-1:2006/AMD1:2014 Electric cables - Calculation of the current rating - Part 1-1: Current rating equations (100 % load factor) and calculation of losses - General
• 2014 IEC 60287-1-1:2014 Electric cables - Calculation of the current rating - Part 1-1: Current rating equations (100 % load factor) and calculation of losses - General
• 2006 IEC 60287-1-1/COR1:2006 Electric cables - Calculation of the current rating - Part 1-1: Current rating equations (100% load factor) and calculation of losses - General; Corrigendum 1
• 2006 IEC 60287-1-1:2006 Electric cables - Calculation of the current rating - Part 1-1: Current rating equations (100 % load factor) and calculation of losses - General
• 1970 IEC 60287-1-1:1994/AMD2:2001 Amendment 2 - Electric cables - Calculation of the current rating - Part 1: Current rating equations (100% load factor) and calculation of losses - Section 1: General
• 2001 IEC 60287-1-1:2001 Electric cables - Calculation of the current rating - Part 1-1: Current rating equations (100% load factor) and calculation of losses; General
• 1970 IEC 60287-1-1:1994/AMD1:1995 Amendment 1 - Electric cables - Calculation of the current rating - Part 1: Current rating equations (100% load factor) and calculation of losses - Section 1: General
• 1994 IEC 60287-1-1:1994 Electric cables - Calculation of the current rating - Part 1: Current rating equations (100% load factor) and calculation of losses; section 1: General