CEI 20-21/3-1 : 2007
Current
The latest, up-to-date edition.
ELECTRIC CABLES - CALCULATION OF THE CURRENT RATING - PART 3-1: SECTIONS ON OPERATING CONDITIONS - REFERENCE OPERATING CONDITIONS AND SELECTION OF CABLE TYPE
Hardcopy , PDF
English
01-01-2007
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FOREWORD
INTRODUCTION
1 Scope
2 Normative reference
3 Reference ambient temperatures and thermal resistivities
of soil in various countries
4 Values relating to the operating conditions in various
countries
5 Information required from the purchaser for the selection of
the appropriate type of cable
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.
| Committee |
CT 20
|
| DevelopmentNote |
Supersedes CEI 20-21. (05/2008)
|
| DocumentType |
Standard
|
| Pages |
22
|
| PublisherName |
Comitato Elettrotecnico Italiano
|
| Status |
Current
|
| SupersededBy | |
| Supersedes |
| Standards | Relationship |
| IEC 60287-3-1:2017 | Identical |
| IEC 60183:2015 | Guidance for the selection of high-voltage A.C. cable systems |
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