GCM Communication interface module with carrier of GPSreceiver moduleGDE Graphical display editor within PCM600GI General interrogation commandGIS Gas-insulated switchgearGOOSE Generic object-oriented substation eventGPS Global positioning systemGSAL Generic security applicationGSE Generic substation eventHDLC protocol High-level data link control, protocol based on the HDLCstandardHFBR connector type Plastic fiber connectorHMI Human-machine interfaceHSAR High speed autoreclosingHSR High-availability Seamless RedundancyHV High-voltageHVDC High-voltage direct currentIDBS Integrating deadband supervisionIEC International Electrical CommitteeIEC 60044-6 IEC Standard, Instrument transformers – Part 6:Requirements for protective current transformers fortransient performanceIEC 60870-5-103 Communication standard for protection equipment. Aserial master/slave protocol for point-to-pointcommunicationIEC 61850 Substation automation communication standardIEC 61850–8–1 Communication protocol standardIEEE Institute of Electrical and Electronics EngineersIEEE 802.12 A network technology standard that provides 100 Mbits/son twisted-pair or optical fiber cableIEEE P1386.1 PCI Mezzanine Card (PMC) standard for local busmodules. References the CMC (IEEE P1386, also knownas Common Mezzanine Card) standard for the mechanicsand the PCI specifications from the PCI SIG (SpecialInterest Group) for the electrical EMF (Electromotiveforce).IEEE 1686 Standard for Substation Intelligent Electronic Devices(IEDs) Cyber Security CapabilitiesSection 6 1MRK 511 394-UEN AGlossary66 670 series 2.2 IECCommunication protocol manual