HVDC POWER CABLE MULTI-BRANCH JOINT ASSEMBLY

An HVDC power cable joint assembly (7) for jointing more than two power cables (9), comprising: a connection body comprising: a multi-branch conductor having at least two branches and a stem, a multi-branch conductor insulation system comprising: a connection body inner semiconducting layer arranged radially outside of the multi-branch conductor, a connection body insulation layer arranged radially outside the connection body inner semiconducting layer, a connection body outer semiconducting layer arranged radially outside the connection body insulation layer, N power cables (9), where N is the number of branches plus one, each power cable (9) having a conductor (9a), and a power cable insulation system surrounding the conductor (9a), N power cable joints (11), each connecting a branch or the stem (3c) to a respective power cable (9), wherein each power cable joint (11) comprises: a conductor joint (11a) between one of the branches, or the stem, and a conductor (9a) of one of the power cables (9a), a joint insulation system arranged around the conductor joint (11a), the joint insulation system comprising a deflector layer (11c), a field grading layer (nd), a joint insulation layer (ne) and a joint insulation system outer semiconducting layer (11f), and an outer cover housing (ng) the joint insulation system, and an external metal casing (13) accommodating the connection body.