| AD | Active Directory |
| BDEW | Bundesverband der Energie- und Wasserwirtschaft |
| CA | Certification Authority |
| CAL | Central Activity Logging |
| CAM | Centralized Account Management |
| DAA | HTTP Digest Access Authentication |
| 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. |
| DOM | Binary output module, four channels |
| DPC | Double-Point Control |
| EMC | Electromagnetic Compatibility |
| Ethernet | A standard for connecting a family of frame-based computer networking technologies into a LAN |
| FIFO | First In, First Out |
| FTP | File Transfer Protocol |
| FTPS | FTP Secure |
| GOOSE | Generic Object Oriented Substation Event |
| HMI | Human-Machine Interface |
| HTML | Hypertext Markup Language |
| HTTPS | Hypertext Transfer Protocol Secure |
| IEC | International Electrotechnical Commission |
| IEC 60870-5-104 | Network access for IEC 60870-5-104 (IEC 104) |
| IEC 61850 | International standard for substation communication and modeling |
| IEC 61850-8-1 | A communication protocol based on the IEC 61850 standard series |
| IED | Intelligent Electronic Device (protection and control device) |
| IEEE | Institute of Electrical and Electronics Engineers, Inc. |
| IEEE 1588 v2 | Standard for a Precision Clock Synchronization Protocol for networked measurement and control systems |
| IEEE 1686 | Standard for Substation Intelligent Electronic Devices' (IEDs') Cyber Security Capabilities |
| 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 |
| MMS |
1. Manufacturing message specification 2. Metering management system |
| NERC CIP | North American Electric Reliability Corporation - Critical Infrastructure Protection |
| PCM600 | Protection and Control IED Manager |
| PRP | Parallel Redundancy Protocol |
| PTP | Precision Time Protocol |
| R-GOOSE | Routable GOOSE |
| RJ-45 | Galvanic connector type |
| SDM600 | A software solution for automatic management of service and cyber security relevant data across substations |
| SMV | Sampled Measured Values |
| SNTP | Simple Network Time Protocol |
| TCP | Transmission Control Protocol |
| TCP/IP | Transmission Control Protocol/Internet Protocol |
| UDP | User Datagram Protocol |
| VPN | Virtual Private Network |
| WHMI | Web Human-Machine interface |