SPEC 84021

3-Layer 25kV ACSR Tree Wire/Spacer Cable

An Alternative and Robust Design to Bare ACSR Conductors to Harden the Electrical Grids.
3-Layer 25kV ACSR Tree Wire Concentrically Stranded ACSR Track-Resistant Crosslinked Polyethylene.

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Construction:

  1. Conductor:Concentrically stranded ACSR
  2. Strand Shield:Semi-conducting cross linked polymer
  3. Inner Layer:Low-Density Crosslinked Polyethylene (LDXLPE)
  4. Outer Layer:High-Density Track-Resistant Crosslinked Polyethylene

Applications and Features:

Used for primary and secondary overhead distribution where limited space is available or desired for rights-of-way. Installed the same as bare conductors, however, covering is effective in preventing direct shorts and instantaneous flashovers should tree limbs or other objects contact conductors in such close proximity.
  • Tree Wire - Used for spans where trees crowd the right-of-way, such as in wooded residential areas, when a minimum of interference with the environment is desired. Covering minimizes power outages due to conductor contact with tree limbs, reducing the need for frequent or severe trimming.
  • Covering Rated 90°C Normal and 130°C Emergency Operation. Unless adequate knowledge of the thermal characteristics of the environment is known, the permissible conductor temperature should be reduced by 10°C or in accordance with available data.
  • Specifications:

  • ASTM B230 Aluminum, 1350-H19 Wire for Electrical Purposes
  • ASTM B232 Concentric-Lay-Stranded, Aluminum Conductors, Coated Steel Reinforced (ACSR)
  • ASTM B498 Zinc-Coated (Galvanized) Steel Core Wire for Aluminum Conductors, Steel Reinforced (ACSR)
  • ASTM B500 Metallic Coated Stranded Steel Core for use in overhead Electrical Conductors
  • ICEA S-121-733 Tree Wire and Messenger Supported Spacer Cable
  • Table 1 – Weights and Measurements
    Cond. SizeCond. StrandsDiameter Over ConductorConductor Shield ThicknessInner Layer ThicknessOuter Layer ThicknessApprox. ODApprox. WeightRated Strength
    AWG/Kcmil#inchmilmilmilinchlb/1000ftlb
    1/06/10.398151251250.9283854161
    2/06/10.447151251250.9774435045
    3/06/10.502151251251.0325136289
    4/06/10.563151251251.0936007933
    266.818/10.609151251251.1396086536
    266.826/70.642151251251.17269210735
    336.418/10.684151251251.2147148246
    336.426/70.720151251251.2581813395
    336.430/70.741151251251.271108616435
    397.518/10.743151251251.2738049443
    397.524/70.772151251251.30286313870
    397.526/70.783151251251.31392615485
    47724/70.846201251251.38699916340
    47726/70.858201251251.398107618525
    47730/70.877201251251.423145822610
    556.518/10.879201251251.419104513015
    556.524/70.914201251251.454112418810
    All dimensions are nominal and subject to normal manufacturing tolerances

    Revision: 3.0.00C