3-Phase Motor Not Starting
Separate control, supply, motor and load symptoms.
Read guide āELECTRICAL DOCTOR
Tell us what happened.
Find the next step.
Choose your equipment and describe the problem. Answer guided questions and review the information still needed.
BEFORE WORKING ON EQUIPMENT
Check safety first
- Do not touch exposed electrical parts.
- Do not repeatedly reset a tripping device without identifying the cause.
- Do not bypass interlocks or protection.
- Only authorised personnel may inspect or test under approved site procedures.
- For 11kV/33kV faults, obtain qualified site engineering support.
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PRELIMINARY FAULT SUMMARY
Your fault assessment
What the answers suggest
Additional information from your answers
Priority review areas
Recorded measurement findings
Points to verify
Priority review areas
Recorded measurement findings
Points to verify
Priority review areas
Recorded transformer data
Points to verify
Priority review areas
Recorded generator data
Points to verify
Priority review areas
Existing record findings
Points to verify
Priority review areas
Recorded data findings
Points to verify
Possible areas to review
Information still needed
Recommended safe next step
Need someone to inspect or maintain the equipment? View electrical maintenance services.
TECHNICAL GUIDES
Start with a common fault
Read clear troubleshooting notes on motors, drives, breakers and power factor panels.
Motor Overload Trips
Understand delayed tripping and the evidence needed.
Read guide āStar-Delta Changeover Problem
Review sequence, timer, interlocks and indications.
Read guide ā