ITBs with high performance in time duration (4 seconds) were produced at JET in plasma discharges operating at the plasma current of 2.4 MA and toroidal magnetic field of 3.45T using Lower Hybrid (LH) radiofrequency power (2.3MW) for heating and current drive (CD) [1]. The coupling of the LH radiofrequency power started during the plasma current ramp-up and was maintained during the main heating phase (neutral beam injection (NBI) and ion cyclotron radiofrequency heating (ICRH) combined). The ITB's feature with longer time duration in shots performed by coupling LH power during the main heating phase was attributed to the low magnetic shear located in the outer half of plasma, as effect of the local LH current drive [2].