Installation and Commissioning Guide for Three-Phase Asynchronous Motors
Pre-Installation Inspection
Insulation Resistance Test
1.Use a 500V megohmmeter to measure insulation resistance.
2.Minimum requirement: ≥0.5 MΩ for low-voltage motors.
3.If below standard, troubleshoot before installation to prevent short circuits.
Motor Specification Verification
1.Confirm power, speed, protection class (IP rating), and mounting type (horizontal/vertical).
2.Ensure the motor suits the operating environment (e.g., damp or dusty conditions).
Foundation Preparation
1.Structural Integrity
Use high-grade concrete with proper reinforcement to withstand dynamic loads.
2.Leveling Precision
Measure with a precision level; uneven bases cause vibration and bearing wear.
Motor Installation
1.Lifting & Positioning
Use certified lifting gear and attach to designated lifting points.
Secure with uniformly torqued foundation bolts (use a torque wrench).
2.Coupling Alignment
Align shafts within 0.05–0.1mm tolerance using dial indicators.
Maintain proper axial/radial clearance to prevent coupling damage.
Electrical Connection
1,Safety Measures
Verify power isolation with a voltage tester before wiring.
Wear insulated gloves and a helmet.
2.Phase Sequencing
Follow wiring diagrams strictly.
Label terminals (A/B/C or Yellow/Green/Red) to avoid reverse rotation.
Testing & Commissioning
1.No-Load Test (≥30 minutes)
Monitor speed, vibration, temperature, and noise.
Abnormal signs: Sudden temperature rise, excessive vibration → STOP & inspect.
2.Gradual Loading
Increase load incrementally to prevent winding damage