The Voltage Definitions table defines the ranges of voltages that can be assigned to the Distribution Systems available in your project. Each voltage definition is specified as a range of voltages to allow for differing voltage ratings on devices from various manufacturers. For example, devices used on a 120V distribution system may carry ratings of anywhere from 110V to 130V.
You can create Voltage Definitions and you can delete definitions that are not currently in use with any distribution system.
Click Add and enter parameters to specify a new voltage definition. Click Delete to remove a selected voltage definition.