Shandong 【quality rigs dedicated inverter manufacturing 
 Rig dedicated inverter production], Shandong Lee crown of Electronic Science and Technology Co., Ltd., Tel: 15953810777 Manager Cao, Features oil rig is one of the most well production equipment to its normal operation and work efficiency is directly related to the oil wells The rate of economic construction as well. Because of the particularity of the drilling process, along with the increase in drilling depth winch operations accounted for an increasing proportion of entire operating time, pressure and speed coupled with changes in geological conditions, need to be adjusted accordingly, in order to improve the rate of penetration and prevent sticking. Therefore a very high demand for drilling rig equipment. The inverter is a In traditional drilling electrical control system based on the use of today's advanced inverter technology successfully developed. The conventional oilfield drilling rig, wound induction motor, start-frequency direct control speed gear shifting with the clutch