Power purification (voltage regulation) is useful, if not necessary, in many industries. Electrical noise or power anomalies (aka ‘unclean’ power) might be the reason you have equipment going offline, which cuts into productivity!
Does this apply to you? If your facility has powerful, motor driven processes you might want to protect your controls from the interference caused by your high-power equipment. When dealing with sensitive electronic equipment or delicate processes, you can ensure consistency and precision