SPEC 81221

28kV AL 100% EPR Full Neutral LLDPE Primary UD

Single Conductor, 280 Mils Ethylene Propylene Rubber (EPR), 100% Insulation Level, Full Concentric Neutral, Linear Low Density Polyethylene (LLDPE) Jacket. Silicone Free

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Construction:

  1. Conductor:Moisture blocked class B compressed Aluminum ASTM B231 1350 ¾ hard H16/H26 ( Non Moisture Blocked Optional )
  2. Conductor Shield:Conventional Semi-conducting cross-linked copolymer; Supersmooth conductor shield optional; A conductor tape is used for cable size larger than or equal to 1500 Kcmil
  3. Insulation:280 Mils Ethylene Propylene Rubber (EPR) 100% insulation level
  4. Insulation Shield:Strippable semi-conducting cross-linked copolymer
  5. Concentric Neutral:Helically applied soft drawn bare copper full concentric neutral
  6. Overall Jacket:Linear Low Density Polyethylene (LLDPE) Jacket, black with red extruded stripes; PowerGlide® LLDPE jacket optional

Applications and Features:

Southwire's 28kV cables are suited for use in wet and dry areas, conduits, ducts, troughs, trays, direct burial, sunlight, and where superior electrical properties are desired. These cables are capable of operating continuously at the conductor temperature not in excess of 105°C for normal operation. 140°C for emergency overload, and 250°C for short circuit conditions. Jacket types available that can be installed in conduit without the aid of lubrication. Rated for 1000 lbs./FT maximum sidewall pressure.

Specifications:

  • ASTM B231 Standard Specification for Concentric-Lay-Stranded Aluminum 1350 Conductors
  • ASTM B609 Standard Specification for Aluminum 1350 Round Wire, Annealed and Intermediate Tempers, for Electrical Purposes
  • ICEA S-94-649 Standard for Concentric Neutral Cables Rated 5 - 46kV
  • AEIC CS-8 Specification for extruded dielectric shielded power cables rated for 5 through 46KV
  • UL 1072 Listed as MV 90 When Specified
  • Optional CSA: CSA 68.5 and -40C optional marking available upon request
  • Sample Print Legend:

    SOUTHWIRE HI-DRI(R) [CONDUCTOR SIZE] [AWG or KCMIL] AL 28000 VOLTS EPR INSULATION 280 MILS -- (NESC) -- SOUTHWIRE {MMM} {YYYY} NON-CONDUCTING JACKET
    Table 1 – Weights and Measurements
    Stock NumberCond. SizeDiameter Over ConductorDiameter Over InsulationInsul. ThicknessDiameter Over Insulation ShieldConcentric NeutralNeutral DC Resistance 25°CJacket ThicknessApprox. ODApprox. WeightMin Bending RadiusMax Pull Tension*
    AWG/KcmilinchinchmilinchNo. x AWGΩ/1000ftmilinchlb/1000ftinchlb
    TBA1 (1)0.2890.8862800.96613x140.202501.19472414.3502
    TBA1 (19)0.3220.9192800.99913x140.202501.22775814.7502
    TBA1/0 (1)0.3250.9222801.00216x140.164501.23080214.8634
    TBA1/0 (19)0.3520.9492801.02916x140.164501.25783115.1634
    TBA2/0 (19)0.3950.9922801.07213x120.128501.33296816.0799
    TBA3/0 (19)0.4431.0402801.12016x120.104501.380109116.61007
    TBA4/0 (19)0.4981.0952801.19513x100.080501.499132118.01270
    TBA250 (37)0.5581.1642801.26416x100.065501.568150918.81500
    TBA350 (37)0.6611.2672801.36716x90.052801.756190421.12100
    All dimensions are nominal and subject to normal manufacturing tolerances
    ◊ Cable marked with this symbol is a standard stock item
    * Pulling tension based on pulling eye directly connected to conductor
    Table 2 – Electrical and Engineering Data
    Cond. SizeDC Resistance @ 25°CAC Resistance @ 90°CCapacitive Reactance @ 60HzInductive Reactance @ 60HzCharging CurrentDielectric LossZero Sequence Impedance*Positive Sequence Impedance*Short Circuit Current @ 30 CycleAllowable Ampacity in Duct 90°C†Allowable Ampacity Directly Buried 90°C‡
    AWG/KcmilΩ/1000ftΩ/1000ftMΩ*1000ftΩ/1000ftA/1000ftW/1000ftΩ/1000ftΩ/1000ftAmpAmpAmp
    1 (1)0.2110.2650.0560.0520.28993.5210.456+j0.0950.267+j0.0514513.5140175
    1 (19)0.2110.2650.0530.0500.30899.4770.455+j0.0930.267+j0.0504513.5140175
    1/0 (1)0.1680.2110.0520.0500.309100.0150.371+j0.0750.213+j0.0495555.1155195
    1/0 (19)0.1680.2110.0500.0490.324104.8460.371+j0.0740.213+j0.0485555.1155195
    2/0 (19)0.1330.1670.0460.0480.348112.4800.295+j0.0600.170+j0.0477171.1180225
    3/0 (19)0.1050.1320.0430.0460.374120.9340.238+j0.0490.136+j0.0458825.9205250
    4/0 (19)0.08360.1050.0400.0450.404130.5490.186+j0.0430.110+j0.04411399.0235285
    250 (37)0.07070.0890.0370.0440.441142.5280.156+j0.0370.094+j0.04114029.6
    350 (37)0.05050.0640.0330.0430.496160.2820.117+j0.0330.071+j0.03917692.4305370
    * Calculations are based on three cables triplexed / concentric shield / Conductor temperature of 90°C / Shield temperature of 45°C / Earth resistivity of 100 ohms-meter
    † Ampacities are based on Figure 7 of ICEA T-117-734 (Single circuit trefoil, 100% load factor, 90°C conductor temperature, earth RHO 90, 36" burial depth)
    ‡ Ampacities are based on Figure 1 of ICEA T-117-734 (Single circuit trefoil, 100% load factor, 90°C conductor temperature, earth RHO 90, 36" burial depth)
    Table 3 – Weights and Measurements (Metric)
    Stock NumberCond. SizeDiameter Over ConductorDiameter Over InsulationInsul. ThicknessDiameter Over Insulation ShieldConcentric NeutralNeutral DC Resistance 25°CJacket ThicknessApprox. ODApprox. WeightMin Bending RadiusMax Pull Tension*
    AWG/KcmilmmmmmmmmNo. x AWGΩ/kmmmmmkg/kmmmnewton
    TBA1 (1)7.3422.507.1124.5413x140.661.2730.331077363.222234
    TBA1 (19)8.1823.347.1125.3713x140.661.2731.171128373.382234
    TBA1/0 (1)8.2523.427.1125.4516x140.541.2731.241194375.922821
    TBA1/0 (19)8.9424.107.1126.1416x140.541.2731.931237383.542821
    TBA2/0 (19)10.0325.207.1127.2313x120.421.2733.831441406.403556
    TBA3/0 (19)11.2526.427.1128.4516x120.341.2735.051624421.644481
    TBA4/0 (19)12.6527.817.1130.3513x100.261.2738.071966457.205652
    TBA250 (37)14.1729.577.1132.1116x100.211.2739.832246477.526675
    TBA350 (37)16.7932.187.1134.7216x90.172.0344.602833535.949345
    All dimensions are nominal and subject to normal manufacturing tolerances
    ◊ Cable marked with this symbol is a standard stock item
    * Pulling tension based on pulling eye directly connected to conductor
    Table 4 – Electrical and Engineering Data (Metric)
    Cond. SizeDC Resistance @ 25°CAC Resistance @ 90°CCapacitive Reactance @ 60HzInductive Reactance @ 60HzCharging CurrentDielectric LossZero Sequence Impedance*Positive Sequence Impedance*Short Circuit Current @ 30 CycleAllowable Ampacity in Duct 90°C†Allowable Ampacity Directly Buried 90°C‡
    AWG/KcmilΩ/kmΩ/kmMΩ*kmΩ/kmA/kmW/kmΩ/1000ftΩ/1000ftAmpAmpAmp
    1 (1)0.69230.870.01710.17060.948306.82740.456+j0.0950.267+j0.0514513.5140175
    1 (19)0.69230.870.01620.16401.010326.36810.455+j0.0930.267+j0.0504513.5140175
    1/0 (1)0.55120.690.01580.16401.014328.13320.371+j0.0750.213+j0.0495555.1155195
    1/0 (19)0.55120.690.01520.16081.063343.98290.371+j0.0740.213+j0.0485555.1155195
    2/0 (19)0.43640.550.01400.15751.142369.02890.295+j0.0600.170+j0.0477171.1180225
    3/0 (19)0.34450.430.01310.15091.227396.76510.238+j0.0490.136+j0.0458825.9205250
    4/0 (19)0.27430.340.01220.14761.325428.31040.186+j0.0430.110+j0.04411399.0235285
    250 (37)0.23200.290.01130.14441.447467.61150.156+j0.0370.094+j0.04114029.6
    350 (37)0.16570.210.01010.14111.627525.85960.117+j0.0330.071+j0.03917692.4305370
    * Calculations are based on three cables triplexed / concentric shield / Conductor temperature of 90°C / Shield temperature of 45°C / Earth resistivity of 100 ohms-meter
    † Ampacities are based on Figure 7 of ICEA T-117-734 (Single circuit trefoil, 100% load factor, 90°C conductor temperature, earth RHO 90, 36" burial depth)
    ‡ Ampacities are based on Figure 1 of ICEA T-117-734 (Single circuit trefoil, 100% load factor, 90°C conductor temperature, earth RHO 90, 36" burial depth)

    Revision: 3.0.00C