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sklademVydáno: 2020-04-03
BS IEC 60287-3-1:2017
Electric cables. Calculation of the current rating Operating conditions. Site reference conditions
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Označení normy: | BS IEC 60287-3-1:2017 |
Počet stran: | 28 |
Vydáno: | 2020-04-03 |
ISBN: | 978 0 539 13354 7 |
Status: | Standard |
DESCRIPTION
BS IEC 60287-3-1:2017
This standard BS IEC 60287-3-1:2017 Electric cables. Calculation of the current rating is classified in these ICS categories:
- 29.060.20 Cables
This part of IEC 60287-3 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This document defines site reference conditions, however the general values are superseded by specific national requirements.