Undervoltage occurs when the electrical voltage on an appliance is too low, for example due to a blocked wire or low amperage. Long-term problems that cause dip voltages lead to undervoltage. Overvoltage is the opposite of undervoltage.
These can cause overheating of electric motors and failure of non-linear loads such as computer power supplies. Constant undervoltage can indicate device faults, configuration problems or mains power problems. Undervoltage when switching on defective devices can lead to permanent damage to the IT infrastructure.
To cope with undervoltage, an uninterruptible power supply (UPS) with an inverter to regulate the voltage is recommended. The use of a UPS prevents undervoltage, supplies the PC for a limited time in the event of a power failure and protects against damage to the components.