SPEC 84029

3-Layer 25kV AAC Tree Wire/Spacer Cable

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

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Construction:

  1. Conductor:Concentrically stranded AAC
  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.
  • Covered Aerial MV Cable (CAMV)/Spacer Cable - Installed with other Covered Aerial MV cables and a supporting messenger through a series of space-maintaining devices (spacers). The resulting close-proximity configuration minimizes the amount of space and hardware required for line installation, particularly useful in congested areas.
  • 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 B231 Standard Specification for Concentric-Lay-Stranded Aluminum 1350 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
    1/070.336151251250.8663091791
    2/070.376151251250.9063502259
    3/070.423151251250.9534002736
    4/070.475151251251.0054603447
    266.8190.537151251251.0675314473
    336.4190.603151251251.1336215535
    397.5190.659151251251.1896986399
    477190.722201251251.2628067524
    556.5370.78201251251.328998946
    636370.835201251251.37599510260
    All dimensions are nominal and subject to normal manufacturing tolerances

    Revision: 3.0.00C