When Does Poor Power Quality Cause Electronics Failures?

摘要

Even though a 2-cycle power outage can damage electronic equipment, sometimes a 3-cycle outage causes no problems. To many of us, the utility power grid is a vast system of unknowns. Its performance can make unprotected electronic equipment useless. Why? Because grid voltage values, higher or lower than guaranteed nominal values, have an effect on electronic intelligence processing equipment. Incoming grid power "sees" the equipment's DC power supply, which bears the brunt of any AC grid voltage variation.