CEI 20-21/3-1 : 2007現行
ELECTRIC CABLES - CALCULATION OF THE CURRENT RATING - PART 3-1: SECTIONS ON OPERATING CONDITIONS - REFERENCE OPERATING CONDITIONS AND SELECTION OF CABLE TYPE
出版：Comitato Elettrotecnico Italiano
專家解讀視頻
基本信息
標準編號： CEI 20-21/3-1 : 2007
發布時間：2007/1/1 0:00:00
標準類別：Standard
出版單位：Comitato Elettrotecnico Italiano
標準頁數：22
標準簡介
Pertains 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.
本標準替代的舊標準
等同采用的國際標準
IEC 60287-3-1 : 2.0 - Identical
