Sheath Bonding Link Boxes

hvGrid-tech’s Type S link box is suitable for installation in underground locations such as manholes, joint bays, and handholes. It is IP68/NEMA 6P rated and has been independently tested under submersion at 7 metres equivalent depth for 2 hours.

The cover has a permanent seamless gasket with a closed cell internal structure. It is securely sealed with stainless steel fasteners. Covers with an inspection window can be supplied; these facilitate routine inspections without disturbing the enclosure seals.

Bond lead entrances are IP68/NEMA 6P rated. They are matched to the bond lead diameter and sealed with rubber grommet compression glands and heat shrink sleeves. Configurations are available for single core and coaxial (concentric) bonding leads. Link fasteners are readily accessible to facilitate sheath connection changes for cable system testing and to allow contact resistance measurements after testing.

Type S link boxes are available in 3 different sizes:

• Standard Type S link boxes can be configured for 3 or 6 phase direct grounding, single point bonding and cross bonding with SVLs up to 7.5 kV rated voltage.
• Large Type S link boxes are suitable for 3 or 6 conductor single point bonding and cross bonding applications with SVLs up to 18 kV rated voltage.
• Four Phase Type S link boxes are suitable for direct grounding and single point bonding applications where the circuit includes a spare cable.