| ACD | Start/pickup status | |
| ACT |
1. Application Configuration tool in PCM600 2. Trip status in IEC 61850 |
|
| AI | Analog input | |
| DNP3 | A distributed network protocol originally developed by Westronic. The DNP3 Users Group has the ownership of the protocol and assumes responsibility for its evolution. | |
| DPC | Double-point control | |
| EMC | Electromagnetic compatibility | |
| EPA | Enhanced performance architecture | |
| Ethernet | A standard for connecting a family of frame-based computer networking technologies into a LAN | |
| HMI | Human-machine interface | |
| IEC | International Electrotechnical Commission | |
| IEC 60870-5 | IEC standard for telecontrol equipment and systems. Part 5 defines transmission protocols. | |
| IEC 61850 | International standard for substation communication and modeling | |
| IED | Intelligent electronic device | |
| IP | Internet protocol | |
| IP address | A set of four numbers between 0 and 255, separated by periods. Each server connected to the Internet is assigned a unique IP address that specifies the location for the TCP/IP protocol. | |
| ISO | International Standard Organization | |
| LHMI | Local human-machine interface | |
| OSI | Open systems interconnection | |
| PCM600 | Protection and Control IED Manager | |
| RTU | Remote terminal unit | |
| SBO | Select-before-operate | |
| SPC | Single-point status of a controllable object | |
| SPS | Single-point status | |
| TCP | Transmission Control Protocol | |
| TCP/IP | Transmission Control Protocol/Internet Protocol | |
| WHMI | Web human-machine interface |