Some loads that cycle on or off can also cause surges, gradually degrading internal circuitry of sensitive electronic equipment.
Proper functionality of electronic devices requires voltage to flow at a consistent range. Power surges, sags, transients, and momentary interruptions cause voltage to fluctuate leading to the following issues:
- Data loss
- Products damaged during production
- Excess energy consumption
- Additional expense in maintenance, equipment repairs, and equipment replacement
The top five warning signs of power quality issues are:
Voltage dips and swells—typically caused by large loads starting up or shutting down; can damage computers, electronic controls, and lamps
Harmonic distortion—alteration in current frequency cycles; can cause heat-related problems in motors and transformers, plus problems with circuit breakers, fuses, and relays
Voltage unbalance—significant differences in phase voltages of more than 2 %; typically causes motors and transformers to overheat
Flicker—cyclic voltage dips; causes lights to flicker: more a threat to employee productivity than to equipment
Transients—brief, sharp voltage increases caused by equipment switching on or off, capacitor switching, and lightning; can lock up computers, burn out circuit boards, and damage electrical insulation
To help you identify them, fix them, and avoid them in the future through proper prevention and maintenance, consider the Fluke 1735 Three-Phase Power Quality Logger.
With the Fluke 1735 Three-Phase Power Quality Logger you can conduct voltage, current and power studies for determining existing loads. The Logger is also a general-purpose power quality investigative tool that reveals the quality of voltage supply at any point in a distribution network.
Related electrical test equipment available for rent from Protec: