YAP-NJB-600/900 Series Direct-Drive Variable Frequency Motor for Oil Drilling Rig Mud Pumps and Drawworks

This series is a dedicated direct-drive variable frequency motor for oil drilling rig mud pumps and drawworks, with high-torque direct-drive design requiring no transmission structure. Compatible with drilling heavy-load impact and continuous operation conditions, it is the dedicated power model for oilfield core heavy-load equipment.

Core Technical Parameters:

  • Applicable Models: YAP-NJB-600, YAP-NJB-900
  • Rated Power: YAP-NJB-600: 600 kW; YAP-NJB-900: 900 kW
  • Rated Voltage: 600V
  • Rated Current: YAP-NJB-600 (51 Hz): 728 A; YAP-NJB-600 (63.2 Hz): 718 A; YAP-NJB-900: 1,094 A
  • Rated Frequency: YAP-NJB-600: 51 Hz, 63.2 Hz; YAP-NJB-900: 10.8 Hz
  • Rated Speed: YAP-NJB-600: 505 r/min, 628 r/min; YAP-NJB-900: 105 r/min
  • Rated Torque: YAP-NJB-600: 11,346 N·m, 9,124 N·m; YAP-NJB-900: 81,857 N·m
  • Pole Configuration: 12 poles
  • Duty Type: S1 continuous duty
  • Insulation Class: Class H
  • Main Unit Protection Class: IP44
  • Terminal Box Protection Class: IP55
  • Cooling Method: IC06
  • Fan Motor Parameters: YAP-NJB-600: 3 kW 380V 50 Hz, 11 kW 380V 50 Hz; YAP-NJB-900: 2×5.5 kW 380V 50 Hz
  • Explosion-Proof Rating: Compliant with Category II Zone 2 explosion-proof standards
  • Operating Altitude: ≤ 1,500 m
  • Operating Temperature: –25 °C to +55 °C (power derating required when ambient temperature exceeds 40 °C)
  • Relative Humidity: ≤ 90% (at ambient temperature +20 °C)

Product Features:

  • Ultra-large low-speed starting torque, perfectly compatible with mud pump and drawworks heavy-load starting and deep-well pulling operation requirements.
  • Direct-drive structure simplifies the transmission system, reducing mechanical failures and substantially improving equipment operational stability.
  • Precise and controllable variable frequency speed regulation, with smooth impact-free start-stop, compatible with drilling process fine operation requirements.
  • Dedicated dust-proof, sand-proof, and extreme high/low temperature design, withstanding oilfield remote extreme climate environments.
  • Strong overload and impact resistance, capable of withstanding drilling stall and sudden load changes without tripping.

Application Scenarios:

Land oil drilling rig mud pumps, drilling drawworks, and heavy-load pulling operation core equipment.

Note: The above are default parameters. Please contact the company for other special requirements.