• Model NO.：ZJ70DB-VFD
• Specification：VFD
• Trademark：TEDRI
• Origin：China
• HS Code：84314310
• Production Capacity：2000 Sets Per Year

Basic Info.

Model NO. ZJ70DB-VFD Specification VFD Trademark TEDRI Origin China HS Code 84314310 Production Capacity 2000 Sets Per Year

Product Description

Oil drilling electric drive automatic device
Oil drilling rig and oil drilling electric drive automatic device are used  in oil drilling system forl and, sea and desert, which can connect a variety of main drive motor(DC-excited motor, DCseries motor, AC asynchronousmotor), many drivemodes and configuration for diesel generator sets you can choose. Additionally, automaticfeed-drilling unctions, drawwork-position closed loop control functions drilling-down power monitoring functions, rotary table soft torque functions, energy consumption brake replacement assisted-braking and other functions. The device meets to GB3797, JB5878, JB/T7845,SYT6725.2009, IEC and IEEE standards. Among then, some devices installedin drilling rig such as master driller's electric control console,food switch etc. achieve explosion-proof certificate issued by China explosion-proof electrical products quality supervision and testing center. Offshore electric drive automatic devices are certified by the China Classification Society CCS and ABS certification.
Electric drive control system of ZJ60DS desert drillingrig " won the State science and technology progress first-class prize in 1997, the technical level is in the international advanced level; the electric drive control system of SS1H-70F offshore drill rig was developed  for No. 2 exploration oil-drilling platform subordinate the Shanghai Sea Bureau, which filled in the domestic gaps and was appraised by Union appraisal organized by State Bureau of Machinery Industries and SINOPEC Start Petroleum Co., Ltd, and won the Gansu science and technology progress Second-class prize, the technical level is in the international advanced level; the electric drive system of ZJ40DBS variable frequency drill rig was passed through the science and technology results appraisal organized by Gansu science and technology department, which filled in the domestic gaps again and won the Gansu science andtechnology progress First-class prize and China Mechanical Industry  federation science and technology progress Second-class prize; the electric drive system of ZJ50DBS variable frequency drill rig was passed through the  science and technology results appraisal organized by Gansu science and technology department, the technical level is in the international advanced level.SS-typedrilling rigelectric automatic device The type of deviceis for theDC drive system, that rectifying AC power on the ACbus into DC power with adjustable voltage through thyristor to adjust the speed of DC motor.SCR control systemhad been successfullyapplied on the electric drive oil drilling rigfor several decades,because of its proven, reliable, less investment advantages, achieve good graces by users. Main indicators Power system Frequency steady-state accuracy of: ≤ 1% Frequency adjustment time: ≤ 3s Voltage steady accuracy: ≤ 1% Voltage regulating time: ≤ 1.5s Active load imbalance degree: ≤ 5% Reactive load imbalance degree: ≤ 5% Drive system Output voltage: 0 ~ 750V adjustablecontinuously Output current: "one for on" drive 0 ~ 1400A (1600A 90 S)                                "Onefor two" drive 0 ~ 23 00 A (2 60 0A 90 S) Connecting DC motors DC-excited motor(adding excitation device) DC series motor Drive modes DC-excited motor using "one forone" mode DC series motor using "onefor one" or "onefor two" mode

SP-type drilling rig electric automatic device
The type of device is for the variable frequency drives ystem(VFD),that alternating the voltage on ACbus and current with constant frequency into AC power with adjustable frequency,to regulate the speed of AC asynchronous motor.VFD control system in the application of electric drive drilling rig time is not long,but because of its excellent performance(especially for the drawwork), it is developing rapidly in recent years.Main indicators Power system Frequency steady state accuracy: 1% Frequency adjustment time: ≤ 3s Voltage steady accuracy: ≤ 1% Voltage regulator time: ≤ 1.5s Active load imbalance degree: ≤ 5%Reactive load imbalance degree:≤ 5% Drive system Output frequency: 0 ~ 300HZ Output voltage: Max.to AC bus voltage Using variable frequency converter Variable frequency converter of independentproductionbasedvector control World-famousbrand Variable frequency converter Drive mode "onefor one" mode "Common DC bus" mode