Product Information

Specification

About:

This high-voltage (HV) cable is equipped with Ethylene Propylene Rubber (EPR) insulation, which is known for its excellent dielectric strength and thermal aging characteristics, making it ideal for high-voltage applications. The conductor is typically made from bare copper or aluminum, providing flexibility in terms of weight and conductivity. The cable includes a shield layer made of copper or aluminum to protect against external electromagnetic interference and enhance the overall reliability of power transmission. The outer jacket is made of Polyvinyl Chloride (PVC), commonly referred to as Okoseal, which offers additional protection against environmental threats like chemical exposure and physical abrasion. It is designed to operate effectively at voltage levels of 115KV to 138KV.

Also Known As:

• 115/138KV EPR Insulated HV Cable
• High Voltage Okoseal Cable
• Bare Copper/Aluminum Shielded EPR Cable

Application:

• Okoguard HV cables are designed for use in primary circuits in both electrical utilities and industrial installations where they provide maximum circuit security and economical installation. Rated for continuous operation with a 105°C conductor temperature,
• Okoguard HV cables may be installed in wet or dry locations, indoors or outdoors
(exposed to sunlight) in underground ducts, tunnels, directional bores, road bores or direct burial.

Standards:

• IEEE 48 and IEEE 404: Standards that specify the testing and installation procedures for cable terminations and joints in shielded power cables.
• ICEA S-93-639/NEMA WC 74: Specifies the performance requirements for 5-46KV shielded power cables, which also generally apply in principles to higher voltage levels.
• UL 1072: For medium and high voltage power cables, ensuring the cable's performance under specified electrical stresses.

Construction:

• Conductor: Uncoated copper sizes 750 through 1000 kcmil are compact round
strand per ASTM B496. Uncoated copper sizes larger than 1000 kcmil are compressed round Class B strand per ASTM B3 and ASTM B8. Aluminum sizes are compressed round Class B strand per ASTM B231 and ASTM B609.
• Strand Screen: Thermoset, semiconducting EPR strand screen meets or exceeds the
physical and electrical requirements of AEIC CS9 and ICEA S-108-720.
• Insulation: Wet or dry rated thermoset, low loss EPR insulation meets or exceeds the requirements of AEIC CS9 and ICEA S-108-720.
• Insulation Screen: Thermoset bonded semiconducting EPR insulation screen
meets or exceeds the physical and electrical requirements of AEIC CS9 and ICEA S-108-720.
• Shield: 5 mil thick uncoated copper tape, helically applied with 25% nominal
overlap. Optional shields include concentric wires, a combination of copper tape and concentric wires or a longitudinal corrugated copper tape. Aluminum CLX armor covering is also available. 
• Jacket: Okoseal PVC meets or exceeds the physical and electrical requirements of ICEA S-108-720 for polyvinyl chloride jackets. Optional jackets include an insulating red OKOLENE jacket with a black semiconducting jacket when field jacket integrity testing is required.

Features:

• Triple tandem extruded, all EPR system.
• Okoguard cables meet or exceed recognized industry standards (AEIC and ICEA).
• 105 C continuous operating ° temperature.
• 140 C emergency rating. °
• 250 C short circuit rating. °
• Excellent corona resistance.
• Exceptional resistance to “treeing”.
• Moisture resistant.
• Resistant to most oils, acids, and alkalies.
• Sunlight resistant.
• Improved temperature rating. Production testing and associated frequency to be performed in accordance with ICEA S-108-720, latest edition.
• 550 or 650kV BIL, respectively.

*Data provided on this page is subject to change based on different manufacturers' variances

** Images are for display purposes only refer to Product Technical Details for accurate information on the product.