Why surge testing is so important
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Learn how electric motor surge testing can predict failures. Understand the procedures and standards your motor shops should follow.
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Why surge testing is so important
- 1. Electrical Equipment Company - eecoonline.com Electric Motor Surge Testing Why surge testing helps detect motor failures. Things you need to tell your motor shops.
- 2. Surge Testing Predicts Electric Motor Failure Electrical Equipment Company - eecoonline.com Electric motor surge testing helps identify a shorted motor conductor turn and is a predictor of future motor failure due to turn-to-turn shorting.
- 3. Root Causes of Failure Electrical Equipment Company - eecoonline.com Electric Motor Insulation as Root Cause of Failure Failure of electric motor conductor insulation is a first sign that motor is going to fail. Root cause of failure is often insufficient insulation on windings, especially at turns.
- 4. Motor Insulation Damage Chemical deposits on motor windings break down electric motor insulation. Movement of winding during start-ups causes excess wear on insulation. Electrical Equipment Company - eecoonline.com
- 5. Electric Motor Surge Testing Essentials Electrical Equipment Company - eecoonline.com
- 6. 80% of electric motor failures start out as turn-to-turn faults. Motor Surge Testing needs to be part of a comprehensive maintenance program. Electrical Equipment Company - eecoonline.com Surge Testing Can Lower Failures
- 7. Electrical Equipment Company - eecoonline.com SKF Power Packs Baker PP30, Baker PP40 and Baker PP85 A surge test is conducted with a Baker type testing machine, following accepted procedures. Baker-Type Surge Testing
- 8. Motor technician connects a Baker-type test machine to load side of motor starter. A voltage pulse is placed across two of the three electric motor winding conductors. Electrical Equipment Company - eecoonline.com Testing Procedure
- 9. Electrical Equipment Company - eecoonline.com . Motor Testing Procedure Test is then repeated for all three pairs of motor windings to enable comparison. Common problem is motor shops not understanding proper voltage levels.
- 10. Electrical Equipment Company - eecoonline.com Understanding Correct Electric Motor Testing Standard
- 11. Know the Proper Standard Test is for the dielectric strength of motor insulation separating the turns within a form wound coil. Electrical Equipment Company - eecoonline.com
- 12. To calculate motor voltage, define the type or condition of motor coils, as shown below. Electrical Equipment Company - eecoonline.com Common Motor Testing Standards Correct Motor Voltages Will Vary
- 13. IEEE 522 Levels Ensure that your motor shops use proper voltages for surge testing. Voltages below are per IEEE 522. Electrical Equipment Company - eecoonline.com Applying Correct Voltage Levels
- 14. Waveforms Confirm Successful Test Uniform Oscilloscope WaveForm Electrical Equipment Company - eecoonline.com An ideal motor surge test on an oscilloscope will display a uniform waveform. All three sets of windings must be acceptable.
- 15. Electrical Equipment Company - eecoonline.com Ask Questions, Avoid Failures Ask your motor shop which standard they use for surge tests. Low and Medium Voltage Motor Repair Service Center (Shop) Selection Guide
- 16. Visit our website for the motor testing standards guide. Ensure that your motor shop follows the proper standard. For assistance or a consult contact EECOMotorTeam@eeco-net.com or call 800.993.3326 Electrical Equipment Company - eecoonline.com