|static power converter (SPC)(see Note 1)
device that converts DC electricity into AC electricity. Equipment that converts direct current from the array field to alternating current. The electric equipment used to convert electrical power into a form or forms of electrical power suitable for subsequent use by the electric utility
NOTE 1 Any static power converter with control, protection, and filtering functions used to interface an electric energy source with an electric utility system. Sometimes referred to as power conditioning subsystems, power conversion systems, solid-state converters, or power conditioning units
NOTE 2 Because of its integrated nature, the inverter is only required to be totally disconnected from the utility for service or maintenance. At all other times, whether the inverter is transferring PV energy to the utility or not, the control circuits remain connected to the utility to monitor utility conditions. The phrase, “cease to energize the utility line” is used throughout this document. This is to acknowledge that the inverter does not become totally disconnected from the utility when a trip function occurs, such as an overvoltage trip. The inverter can be completely disconnected from the utility for inverter maintenance by opening a utility AC-disconnect switch.