Power Quality Monitoring
Power quality monitoring measures electrical supply conditions that may affect equipment performance, reliability, efficiency, and protection.
What this term means in maintenance
Power quality monitoring measures electrical supply conditions that may affect equipment performance, reliability, efficiency, and protection.
Parameters monitored
Power-quality review may include:
- Voltage
- Current
- Frequency
- Harmonics
- Voltage sag
- Voltage swell
- Transients
- Imbalance
- Flicker
- Power factor
Practical example
Repeated drive trips are investigated using power-quality data that identifies short voltage sags.
Maintenance use
Poor power quality can affect motors, drives, controls, transformers, and sensitive electronics.
Monitoring approach
Portable studies or permanent meters may be used depending on the problem and criticality.
Common mistake
Replacing failed electronic equipment without investigating supply disturbances can allow recurrence.
Related concepts
Related maintenance terms
Keep exploring connected CMMS, reliability, and maintenance planning terms.
Energy Monitoring
Energy monitoring is the measurement and review of electricity, fuel, steam, compressed air, water, or other utility consumption to identify cost, efficiency, and equipment-performance changes.
Transformer Maintenance
Transformer maintenance is the inspection, testing, servicing, and condition management used to preserve safe and reliable electrical transformation.
Equipment Downtime
Equipment downtime is the period when an asset is required or scheduled to operate but is unavailable or unable to perform its intended function.
Glossary FAQs
- What does power quality monitoring measure?
Voltage, current, frequency, harmonics, sags, swells, transients, imbalance, flicker, and power factor.
- What equipment can poor power quality affect?
Motors, drives, transformers, controls, protection, and sensitive electronics.
- When is permanent monitoring useful?
For critical systems or intermittent events that portable studies may miss.