Abstract: A method of repairing or replacing a joint for high voltage polymer cables or a high voltage polymer cable (1c), comprises the steps of: a) removing a section to be replaced of the joint or the high voltage polymer cable (1c) such that two cable ends (1a, 1b) result, whereby the two cable ends (1a, 1b) are oriented toward each other and whereby the two cable ends (1a, 1b) are positioned in a separation distance (20) from each other and whereby each cable end (1a, 1b) comprises a cable conductor (10a, 10b), b) preparing the two cable ends (1a, 1b) by exposing the cable conductors (10a, 10b) of both cable ends (1a, 1b) over a first length c) connecting the two cable conductors (10a, 10b) with a connection piece (3) which comprises two receiving sections (31a, 31b) and a centre section (30) and which is electrically conducting, whereby a length of the centre section (30d) corresponds to the separation distance (20) and whereby the cable conductors (10a, 10b) are mounted in such a way to the receiving sections (3