Link Box

详情

Link Box is electrically and mechanically one of the integral accessories of HV underground and above ground cable bonding system, associated with HV XLPE power cable systems. Link boxes are used with cable joints and terminations to provide easy access to shield breaks for test purposes and to limit voltage build-up on the sheath.

Lightning, fault currents and switching operations can cause over voltages on the cable sheath. The link box optimizes loss management in the cable shield on cables grounded both sides. In HT Cable the bonding system is so designed that the cable sheaths are bonded and earthed or with SVL in such way as to eliminate or reduce the circulating sheath currents.

Link Boxes are used with cable joints and terminations to provide easy access to shield breaks for test purposes and to limit voltage build-up on the sheath. The link box is part of bonding system, which is essential of improving current carrying capacity and human protection. The various type of bonding methods using link boxes are categorized in the pdf file below....