Application
PowerGuard®-XL cables are intended for use in wet or dry locations for distribution of single or three phase medium-voltage power. These cables may be installed in ducts or direct buried.

Construction
Single conductor cable with filled strand aluminum conductors, triple extruded dry cured insulation system consisting of a thermosetting semiconducting conductor shield, high dielectric strength PowerGuard®-XL TRXLPE insulation, thermosetting semiconducting insulation shield, copper concentric neutral wires, water blocking agents, black encapsulating cross-linked polyethylene jacket.

Conductor:  Class A or B Compressed concentric stranded aluminum alloy 1350 per ASTM B 231. Stranded conductors are water-blocked with conductor filling compound. Conductor Shield:  Extruded thermosetting semiconducting shield which is free stripping from the conductor and bonded to the insulation.
Insulation: Extruded, Tree-Retardant Cross-linked Polyethylene (TRXLPE) as defined in ANSI/ICEA S-94-649 - 100% insulation level.
Insulation Shield: extruded thermosetting semiconducting shield with controlled adhesion to the insulation providing the required balance between electrical integrity and ease of stripping.
Metallic Shield: Solid bare copper wires helically applied and uniformly spaced.
Water-blocking agents:  Applied over the insulation shield and around the neutral wires to resist longitudinal water penetration. Longitudinal water penetration shall be tested in accordance with the latest edition of ICEA T-34-664 except that the minimum requirement is 15 psig for 1 hour.
Outer jacket: An extruded-to-fill black non-conducting cross-linked polyethylene jacket, meeting the physical requirements of Table 1 when tested by the methods specified in ANSI/ICEA S-94-649. The jacket shall be free-stripping and not interfere with an intimate contact between the neutral wires and the underlying extruded insulation shield. The jacket shall contain a print legend marking, sequential length marking and three longitudinal extruded red stripes. Factory Warranty is 20 Years.

Options

• Copper Conductors

Physical Properties of Extruded-to-Fill XLPE Jacket

• Unaged Tensile Strength, min. (PSI)…...1500
• Aged* Tensile Strength, min. ret. (%)…......70
• Unaged Elongated, min. (%)...................1500
• Aged* Elongated, min. ret. (%) ..................70
• Heat Distortion 1 hr at 131 ºC, max. (%) ....30

* Aged for 168 hrs at 121 ºC

Insulation Temperature Rating
Normal:         105 ºC
Emergency*:  140 ºC
Short Circuit:  350 ºC
*Operation at the emergency overload temperature shall not exceed 1500 hours cumulative during the lifetime of the cable.

Standards

• ASTM B-231
• AEIC CS8
• ICEA S-94-649
• ICEA T-31-610
• ICEA T-34-664 as applicable for TRXLPE insulated concentric neutral cable
• UL 1072 MV-105
• CSA Standard C68.5-07 File # 257759 Primary Shielded and Concentric Neutral Cable for Distribution

NOTES

1. Extruded layer thicknesses and insulation and insulation shield diameters are in accordance with ANSI/ICEA S-94-649 for concentric neutral cables rated 5-46 kV and also meet the requirements of the latest revisions of AEIC CS8. Dimensions and weights not designated as minimum or maximum are nominal values and are subject to manufacturing tolerances.
2. Ampacities based on cables operating in a 3-phase installation with one cable per phase, flat spaced and touching, earth rho of 90ºC-cm/ W, earth ambient of 20ºC, neutral wires grounded at both ends, 75% load factor, conductor temperature of 105ºC, and 36" depth of burial.
3. Ampacities based on cables operating in a 3-phase installation with one cable per phase, flat spaced and touching, earth rho of 90ºC-cm/W, earth ambient of 20ºC, neutral wires grounded at both ends, 75% load factor, conductor temperature of 105ºC, and 36" depth of burial.
4. UL Type MV-105 PowerGuard®-XL is rated MV-105 in accordance with the UL 1072 Standard. It should be noted that utilizing a 105ºC normal operating conductor temperature will increase cable ampacity rating but will reduce the shield fault capability slightly. If the user plans on operating these cables at 105ºC conductor temperature for normal operation and 140ºC for emergency overload, please contact American Wire Group for the applicable cable ampacity and shield fault capability ratings. Another important consideration is that the migration of soil moisture away from the cable is more likely at the higher operating conductor temperature and can result in an increase in soil thermal resistivity, resulting in an increase in conductor and soil temperature.