IEEE 635 : 2003

GUIDE FOR SELECTION AND DESIGN OF ALUMINUM SHEATHS FOR POWER CABLES

Institute of Electrical & Electronics Engineers

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1 Overview
   1.1 Purpose
   1.2 Scope
2 References
3 Definitions
4 Advantages and limitations of aluminium sheaths
   4.1 Advantages
   4.2 Limitations
5 Applications
   5.1 Background
   5.2 Products and installation conditions
6 Aluminium metals and alloys
   6.1 General
   6.2 Selection and application
7 Smooth and corrugated sheaths
   7.1 Smooth aluminium sheath
   7.2 Corrugated aluminium sheath
8 Selection of sheath thickness
   8.1 Mechanical factors
   8.2 Grounding and relaying considerations
   8.3 Thickness constraints
   8.4 Functional design considerations
9 Types of corrugation
   9.1 General
   9.2 Helical corrugations
   9.3 Annular corrugations
10 Methods of manufacture
   10.1 Direct extrusion process
   10.2 Seam welding
   10.3 DIDD or the "sinking" process
11 Parameters dictating bending radii
   11.1 Bending during installation
   11.2 Curves with cable firmly anchored or embedded in
        position
   11.3 Expansion loops, offsets in manholes
   11.4 Bending performance of aluminium sheaths
12 Fatigue characteristics of large-size corrugated-
   aluminium-sheathed cables installed in restricted
   manholes
13 Installation practices in shafts
   13.1 Self-contained oil-filled cables
   13.2 Cables with extruded insulations
14 Guidelines for splicing and terminating (including
   pulling eyes)
   14.1 Impregnated-paper-insulated and self-contained
        fluid-filled cables
   14.2 Polymeric-insulated cables
   14.3 Pulling eyes
Annex A (informative) Bibliography
Annex B (informative) Fatigue study of large-size helically
                      corrugated aluminium-sheathed cables
Annex C (informative) Recommended installation practices for
                      hand wipe and cast plumb mold technique
                      for sealing aluminium-sheathed cables