Abstract. High density experiments were carried out in T-10 with strong gas-puffing under ECRH ( Pec = 1.2 MW) with both perpendicular and oblique HF power launch. Densities exceeding the Greenwald limit ( nGw) up to 1.8 times were achieved in regime with high safety factor value, q(a) = 10. Decrease of q(a) to value of 3 led to the reduction of the ratio nlim/nGw to 1. Confinement degradation with density growth was not essential up to the density limit. However, it was found that the typical for T-10 linear growth of the energy confinement time with density, n, saturates at ne = 0.6 . nlim. Saturated values exceeded the scaling L89P predictions up to 1.5 times and was close to the value predicted by H-mode scaling (H98,y2).