Standard Three Phase Motor
Balanced, constant-torque power for heavy industrial loads.
Standard Three Phase Motor
WhatsApp for 15-min engineer call
Warranty
1 Year Standard
Service
Covered by Warranty
Certified
ISO 9001:2015
Experience
24 Years
Product Overview
The Sun Star three-phase induction motor generates a rotating magnetic field from the balanced three-phase supply, eliminating the need for starting mechanisms required by single-phase motors. This inherent self-starting capability makes three-phase motors more reliable and lower-maintenance than single-phase alternatives.
Key Features
Technical Specifications
| Power Range | 0.5 HP to 20 HP |
| Voltage | 415V 3-Phase |
| Speed | 2880 / 1440 / 960 / 750 RPM |
| Efficiency | High Performance |
| Insulation | Class F |
| Protection | IP55 |
Common Applications
Industries Served
Textile & Garments
Powers spinning frames, looms, winding machines, and finishing equipment in textile mills.
Plastics & Rubber
Injection moulding machines, extruders, granulators, and blowers in plastic processing plants.
Hydraulic Systems
Hydraulic power pack pump motors for press machines, die casting, and metal forming equipment.
Paper & Printing
Paper machine drives, pulper motors, and printing press auxiliaries in paper and printing plants.
Food & Beverage
Mixers, conveyors, packaging machines, and refrigeration compressors in food processing facilities.
Key Benefits
- Self-starting design eliminates capacitors and centrifugal switches — fewer components mean fewer failure points
- Balanced three-phase current reduces electrical stress on supply transformers and distribution panels
- Constant torque output without pulsation ensures smooth operation of sensitive machinery like textile looms
Why Choose Our Motors
- Available in all four pole configurations (2, 4, 6, 8 pole) from 0.5 HP to 20 HP — comprehensive range from a single source
- Class F insulation with double-dip VPI for superior moisture and chemical resistance
- IP55 protection as standard — no upcharge for dust and water protection
Manufacturing & Quality
Manufacturing Process
Three-phase motor production follows our standard 12-step manufacturing process with precision stator winding, double-dip VPI, dynamic rotor balancing, and comprehensive testing.
Quality Standards
- Phase impedance balance verified to within 2% across all three windings
- 100% insulation resistance and high-voltage testing
- Dynamic balancing to ISO 1940 G2.5 grade
- No-load current and power factor verification
- Vibration measurement to IS 12075 limits
Certifications
Selection Guide
Three-phase motors should be your first choice for any application above 2 HP where three-phase supply is available. For textile machinery requiring precise speed, use 4-pole (1440 RPM) motors.
Comparison With Similar Motors
| Feature | Sun Star Motors™ | Typical Market Motor |
|---|---|---|
| Starting Method | Self-starting — no capacitors or switches | Same for all three-phase motors |
| Efficiency | High-grade CRGO laminations for optimised efficiency | Standard grade laminations |
| Phase Balance | Impedance balanced to within 2% | Not specifically verified |
| Insulation | Class F with double-dip VPI | Class B or F with single-dip |
| Protection | IP55 as standard | IP55 (same for most manufacturers) |
Installation Guidelines
- Verify that the supply is 415V three-phase, 50 Hz before connecting — single-phase connection will not start the motor
- Mount on a flat, rigid baseplate and align with driven equipment within 0.05mm
- Verify phase sequence for correct rotation direction — swap any two phase connections to reverse rotation
Maintenance Tips
- Grease bearings every 3,000–5,000 operating hours with lithium EP2 grease
- Verify voltage balance across all three phases annually — imbalance above 2% causes derating and overheating
- Clean fan cover and cooling fins quarterly
Troubleshooting Guide
| Issue | Possible Cause | Solution |
|---|---|---|
| Motor does not start on three-phase supply | One phase missing (single-phasing), blown fuse, or tripped overload | Check all three phases at motor terminals with multimeter. Replace blown fuse. Reset overload relay. |
| Motor runs in wrong direction | Phase sequence reversed | Swap any two of the three phase connections at the motor terminal box. |
Warranty Information
All Sun Star Motors™ three-phase induction motors carry a 12-month warranty from the date of dispatch, covering manufacturing defects under normal operating conditions.
Quality Assurance • Sun Star Motors™