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ASTM 35kV Aerial Overhead Aluminum Wire AAC 3-layer Track-resistant XLPE
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Application
The three MV phase conductors are held closely together by spacers in covered overhead MV (also known as spacer cables or tree wires). High-strength slings are used to suspend the spacers. The aluminum conductor of the encased overhead cable is shielded by a layer of track-resistant polyethylene.
Constructions
AAC conductor in a single cable with a 2-layer covering, a 3-layer extruded shield, and a shield made of an extruded semiconducting thermoset conductor.
Crosslinked polyethylene (XLPE) makes up the inner layer of the covering, and track-resistant crosslinked polyethylene (TK-XLPE) makes up the outside layer.
Each layer is joined by a bond.
Conductor:
AAC (1350-H19, compact stranded).
Conductor Shield:
Extruded semiconducting thermoplastic shield which is free stripping from the conductor and bonded to the covering.
Inner and Outer Covering:
2-layer crosslinked polyethylene covering (XLPE), where the outer layer is track-resistant (TK-XLPE). All layers are bonded together. The outer layer shall be black or gray, sunlight resistant and track resistant.
Standards
These cables are manufactured and tested to meet or exceed the following standards:
ASTM B230 – Aluminum 1350–H19 Wire for Electrical Purposes
ASTM B231 – Concentric-Lay-Stranded Aluminum 1350 Conductors
ASTM B400 – Compact Round Concentric-Lay-Stranded Conductors
ASTM D1248 – Polyethylene Plastics Extrusion Materials for Wire and Cable
ICEA S-121-733 – Tree Wire and Messenger Supported Spacer Cable
