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Up to 80% of all problems with power quality are caused by voltage dips or sags. When the system voltage falls below 90% or less of the nominal system voltage for a half-cycle to a minute, it is referred to as a dip or sag. Relay control issues, computer lockup, data (memory) loss on programmable controllers, incandescent light dimming if the dip lasts more than three cycles, and computer lockup are common symptoms of dips.
Because it might be impossible to foresee when sags will occur, detecting them can be tricky. Monitoring at the load where the dip symptoms initially appear is the first step towards troubleshooting any dip issues. A decline in both voltage and current typically signifies an upstream occurrence. A load or downstream about Electrical Lighting Supply. Visit: https://gulfbdgroup. com/electrical-lighting
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