Internal transients are created from within a given facility, business or home. They can be either Impulse or RingWave type surges.
Impulse surges are caused by changes in voltage while RingWave surges are caused by changes in frequency.
Internally generated surges account for 80% or more of surge related electronics & electrical damage within a facility, business or home. Primarily, these surge types are RingWaves.
These surges are the most overlooked and misdiagnosed power quality problem today.
Internal transients are created by everyday operations of electrical and electronic equipment inside a given facility, business or home.
Abruptly changing the current flowing through an electrical circuit produces surges. The simple act of switching on a light, motor, copy machine or other electrical device creates the abrupt change in current flow on the circuit.
Internally generated transients can be either repetitive or random. Switching on a light or copier tends to be random. The operation of variable frequency drives, inverters and HVAC equipment produce repetitive surges.
Typically, switching larger load currents produces larger transients with larger surge energies. Some examples of larger transients producing equipment include electric welders, HVAC compressors, motors and even portable heaters.
Internal surges can occur hundreds to thousands of times a day in a residential setting. They can occur hundreds of thousands to millions of times a day in a busy industrial or commercial environment.
Quietly Damaging... Even at low levels, surges occurring thousands to millions of times per day are causing damage. Slowly these surges are chipping away on sensitive and critical circuits and systems.
The quiet, repetitive damage causes deterioration over time. The deterioration leads to system disrupts, timing issues, erratic computer performance and even light flicker. These symptoms lead to the inevitable. Hard Failure. Most of the time, its premature failure which can be prevented.
Internal transients can produce immediate damage. Power quality monitoring equipment has shown surge activity as high as 6000+ volts right at the outlet. Yes... the outlet.
The simple, normal, everyday operation of electrical and electronic equipment creates electrical transients.
These voltage and frequency surges will vary in magnitude and duration, so in correlation, will produce varying degrees of damage with each event.
Regardless, these repetitive surges will damage and are damaging electrical systems and electronic equipment.
Note: Not all SPDs protect effectively against both Impulse and RingWave transients. Ours Do.
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