Waveform Examples for Voltage Swell

Voltage Swell Event

A Voltage Swell (also known as Voltage Surge) Event will be triggered (and a waveform consequently captured) when the mains voltage RMS value rises to a higher than expected value, exceeding the triggering threshold. Common Voltages (phase to neutral) are 110V, 120V, 220V, 230V, 240V, and 277V. The typical range for the Voltage Swell trigger is +10% from nominal, as most electronic systems are designed to handle voltages up to this level of Swell, but may be disrupted or damaged with voltage swells that are too high.

An example of a Voltage Swell waveform signature is shown below.

Example of Voltage Swell Event, showing a slightly higher mains voltage on
Phases A & C than "normal", with some distortion on phases B & C.

How Do I Adjust The Trigger Thresholds?

To adjust the set-points of the event triggers, please refer to the Users Manual, section 3.6.

How Do I Eliminate These Kinds of Events?

To reduce or eliminate these kinds of power events, you may need to increase the level of your power conditioning to a Voltage Regulator or a UPS. For more information, visit our Additional Power Conditioning web-pages.

For a sampling of various Case Studies that describe various power quality issues and their causes, please visit our Case Studies webpage.

For more information, please contact the TEAL Marketing Department.