What is the voltage threshold for a power sag event to be recorded?

A power sag is recorded on an Innovolt PM/PP unit when a drop in operating voltage occurs between 2-cycles and 2-seconds, where the change in voltage is 86% or less from operating voltage.  US voltage (out of the wall socket) is at 60 Hz, which means that there are 60-cycles per second.

For example: 120V is the operating voltage. An immediate dip below 103 Volts (86%) for up to 2 seconds will be recorded as a sag.

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