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Medium voltage covered conductors are widely used in following conditions:
Covered Aerial MV 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.
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.
Spacer Cable
Installed with other spacer 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.
AAC, AAAC, ACSR Hard drawn Aluminum conductors & high die electric strength; Galvanized steel wire zinc coated & high impact/ abrasion resistant concentrically stranded insulated with Cross-linked polyethylene (XLPE)
Jacketed with weather, track & sunlight resistant High density polyethylene (HDPE)
● American Standard One Two Three Layer MV 5kv 15KV 25KV 35KV Overhead Covered Conductor.
● ASTM B230 Standard Specification for Aluminum 1350–H19 Wire for Electrical Purposes
● ASTM B231 Standard Specification for Concentric-Lay-Stranded Aluminum 1350 Conductors
● ASTM B232 Standard Specification for Concentric-Lay-Stranded Aluminum Conductors, Coated-Steel Reinforced (ACSR)
● ASTM B398 Standard Specification for Aluminum-Alloy 6201-T81 and 6201-T83 Wire for Electrical Purposes
● ASTM B399 Standard Specification for Concentric-Lay-Stranded Aluminum-Alloy 6201-T81 Conductors
● ASTM B400 Standard Specification for Compact Round Concentric-Lay-Stranded Conductors
● ASTM D2656 Standard Specification for Cross-linked Polyethylene Insulation for Wire and Cable Rated 2001 to 35 000 V
● ASTM D1248 Standard Specification for Polyethylene Plastics Extrusion Materials for Wire and Cable
● ICEA S-70-547 Standard Specification for Weather Resistant Polyethylene Covered Conductors
● The conductor shield shall be an extruded back semiconductor polymer meeting the physical requirements of ICEA S-61-402.
● Available with track-resistant high-density polyethylene (TR-HDPE) per ASTM D1248 or Track-Resistant Cross-linked Polyethylene (TK_XLPE) covering per ASTM D2656 and ICEA S-66-524
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