Brand NOV – National Oilwell Varco
Model CM628TUT
Part Number CM628TUT
Horsepower 1230 to 1350 HP
Voltage 560 to 640 VAC
Base Speed 830 to 910 RPM
Frequency 42 to 48 Hz
Protection Ex e II T3 (ATEX Certified)
Application: Designed for use with Variable Frequency Drive (VFD) – ideal for drilling operations
in oil and gas fields.
Main Technical Specifications
Power Output: 1150 to 1350 HP (varies according to voltage and frequency)
System Voltage: 600V / 690V
Rated Current: 1075 to 1180 A
Base Frequency: 42 Hz
Base Speed: 830–910 RPM
Maximum Speed: 3000 RPM
Base Torque: 7190–7700 lb-ft
Constant Power Range: 840–1400 RPM
Insulation Class: H
Cooling: 3200 SCFM (forced air through ducts)
Enclosure: Motor: IP44 with ducted air
Terminal Box: IP56
Connection: WYE (Star)
Total Weight: 6,000 lbs (approx. 2,720 kg)
Operating Temperature Range: -40°C to +55°C
ATEX Rating: Ex e II T3 (increased safety protection for explosive atmospheres)
Certifications and Compliance
ATEX (Europe)
CE, UL (USA)
Rated for use in hazardous locations Stahl enclosure and United Electric Controls (UE)
components
Condition: Equipment in excellent condition, stored on industrial pallets
Visually intact, no signs of severe use or wear.