AC Variable Frequency Drive Drilling Rig
AC variable frequency drive (VFD) drilling rigs offer enhanced safety and efficiency for drilling operations. Driven by AC motors, they provide wide rotation speed adjustment and significant torque output, suitable for drawworks, mud pumps, rotary tables, and top drive systems.



Technical Specifications
Product Overview
Advanced AC VFD Drilling Technology
The DBS series AC Variable Frequency Drive (VFD) drilling rig is engineered for high performance and economic efficiency in demanding oil and gas exploration. By utilizing AC motor drives, the system provides wide rotation speed adjustment and high torque output, significantly increasing drilling efficiency while reducing labor intensity. The integrated dynamic braking and zero-speed maximum torque capabilities ensure a safer operational environment compared to traditional mechanical or SCR rigs.
Key Advantages
Performance Features
- High transmission efficiency and improved power factor
- Reduced electricity power consumption
- Simplified mechanical transmission for easier maintenance
- Dynamic braking functionality
- Maximum torque output at zero rotation speed
- Explosion-proof area compatibility
Technical Specifications
Rig Model Specifications
| Model | Nom. Depth (m/ft) | Drawworks Power (HP) | Max Static Hook Load (mt/lbs) |
|---|---|---|---|
| ZJ30DBS | 3,000m / 9,840ft | 750 HP | 180mt / 396,832lbs |
| ZJ40DBS | 4,000m / 13,000ft | 1,000 HP | 225mt / 500,000lbs |
| ZJ50DBS | 5,000m / 16,400ft | 1,500 HP | 315mt / 700,000lbs |
| ZJ70DBS | 7,000m / 23,000ft | 2,000 HP | 450mt / 1,000,000lbs |
| ZJ80DBS | 8,000m / 26,200ft | 2,500 HP | 585mt / 1,300,000lbs |
| ZJ90DBS | 9,000m / 29,500ft | 3,000 HP | 675mt / 1,500,000lbs |
| ZJ120DBS | 12,000m / 39,400ft | 4,000 HP | 900mt / 2,000,000lbs |
| ZJ150DBS | 15,000m / 49,200ft | 6,000 HP | 1,125mt / 2,500,000lbs |
- Drive System
- AC Variable Frequency Drive (VFD)

Operational Metrics
Global Track Record
System Compatibility
- Driven Components
- DrawworksMud PumpRotary TableTop Drive System



