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ASTM 25kV Aerial Tree Wire Cable AAC 3-layer Track-resistant PE
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Overview
(Tree wire and spacer cable) 25kV aerial cable Compact AAC A tree wire or spacer cable that has been produced, tested, and designated in compliance with ICEA S-121-733, the standard for Tree Wire and Messenger Supported Spacer Cable, has three layers of track-resistant PE.
The first layer of this three-layer structure is a conductor shield, which is followed by layers #2 and #3 of the covering.
Application
In order to avoid contact faults or in situations where there is a lack of space, aerial cable (tree wire and spacer cable) is frequently used in overhead primary and secondary distribution systems rated 25 kV (nominal).
In the event of contact with trees or other wildlife, the track resistant 3-layer structure eliminates short circuits and flashovers. This system can effectively stop system failures, damage, or fires caused by falling trees or branches when it is placed properly.
Construction
Conductor:
AAC conductor.
Conductor Shield:
Extruded semiconducting thermoplastic shield which is free stripping from the conductor and bonded to the covering.
Inner and Outer Covering:
2-layer low-, medium- or high-density polyethylene covering (LDPE, MDPE or HDPE), where the outer layer is track-resistant (TK-MDPE or TK-HDPE). All layers are bonded together. The outer layer shall be black or gray, sunlight resistant and track resistant.
Specifications
ASTM B230 Standard
ASTM B231 Standard
ASTM B400 Standard
ASTM D1248 Standard
ICEA S-121-733 Standard
