... :5000,7000. 1)DC Rig adopts AC-SCR-DC drive mode, using DC motors to ... installation....... Parameter. Rig ModelZJ50DZJ70DNominal drilling depth, 127mm(5)DP,m50007000Max. hook load, kN(t)31503154500450dill ... .5, 25.5, 26.524.5, 25.5, 26.5SubstructureType DZ315/9-S DZ450/9(10.5)-SDrillfloor height99 (10.5)Clear ... manifold103mm (bore dia.) × 35MPaElectric drive modeAC-SCR-DC,one to one, or one to twoNumber ...