Abstract: This paper addresses parameters and setup of diagnostics for Z-pinch study on PTS. Experimental results of single and nested wire array Z-pinch implosion dynamics and radiation characteristics are presented, with wire number in a range from 132 to 300, wire diameter in a range from 5 to 10 m, wire array diameter in a range from 13 to 30 mm. Experimental results reveal that, stagnation time of W wire array Z-pinch agree with 0-D thin shell calculation, however implosion trajectories diverges. Acceleration inferred by trajectory starts at about 67% of implosion time, thus indicates an ablation dominated pinch. With increasing of load linear mass and initial radius, load current increases, implosion time increases correspondingly. Meanwhile, X-ray pulse width increases and peak power decreases. Comparing implosion images of single and nested array, better uniformity and simultaneity are produced with nested array implosion, with an enhancement of peak radiation power. Total radiation energies produced by single array and nested array are comparable, with an energy conversion ratio of 15%。Preliminary results of dynamic hohlraum study and a comparison to wire array Z-pinch experiment are presented.