Technicial Specifications
| Type of EX-Protection | Class 1 Division 2 Group A,B,C,D T3 (NEC or CEC) Class 1 Division 2 Group A,B,C,D T3 (NEC or CEC) |
| Mounting Designation | F1 or F2 F1 or F2 |
| Voltage/Frequency | 4000V & 4160V ± 10%/60 Hz 4000V & 4160V ± 10%/60 Hz |
| Full Load Speed | 894 rpm 894 rpm |
| Electric Motor Type | Squirrel Cage Induction Motor Squirrel Cage Induction Motor |
| Number of Poles | 8 8 |
| Maximum Ambient Temperature | 104 °F 40 °C |
| Full Load Current | 458 Amps 458 Amps |
| Shaft | 8.5 in 216 mm |
| Rated Torque | 20555 lb/ft 27869 N·m |
| Maximum Altitude - Before Derate | 3300 ft 1000 m |
| Locked Rotor Amps | 540% Code E 540% Code E |
| Connection of Stator Winding | Star Star |
| Standards | NEMA MG1 NEMA MG1 |
| Duty | Continuous Continuous |
| Enclosure Type/Method of Cooling | WP-II WP-II |
| Locked Rotor Torque | 60% 60% |
| Service Factor | 1.15 SF (1.0 VFD) 1.15 SF (1.0 VFD) |
| No Load Current | 137 Amps 137 Amps |
| Insulation | Class F Class F |
| Temperature Rise | Class B at rated load Class B at rated load |
Advantages and Features
Standard Equipment
-
Bearings
- Bearing RTDs for temperature monitoring
- Insulated non-drive end bearings to reduce bearing currents
- Anti-friction on 1500 hp (optional)
-
Rotors
- Designed for minimal vibration
- Dynamic balancing at full operational speed
- Fabricated copper squirrel cages
- Forged, keyless shaft
- AISI 4140/DIN42CrMo4 shaft
-
Stators
- Radial air ducts ensure uniform and efficient cooling
- Vacuum pressure impregnated with specially formulated epoxy resin
- 2X RTDS per Phase
- Space heater
- Welded and machined stator core retains its rigidity throughout motor life to ensure a sealed and homogeneous insulation system that results in high dielectric strength, excellent heat transfer and the elimination of hazardous internal partial discharges
