FPGA Field-programmable gate array
GOOSE Generic Object-Oriented Substation Event
GPS Global Positioning System
HMI Human-machine interface
HSR High-availability seamless redundancy
HV High voltage
HW Hardware
IDMT Inverse definite minimum time
IEC International Electrotechnical Commission
IEC 60870-5-103 1. Communication standard for protective equipment
2. A serial master/slave protocol for point-to-point
communication
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
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.
IRF 1. Internal fault
2. Internal relay fault
IRIG-B Inter-Range Instrumentation Group's time code format
B
LAN Local area network
LC Connector type for glass fibre cable
LCD Liquid crystal display
LED Light-emitting diode
LHMI Local human-machine interface
LV Low voltage
Modbus A serial communication protocol developed by the
Modicon company in 1979. Originally used for
communication in PLCs and RTU devices.
MV Medium voltage
PC 1. Personal computer
Section 17 1YHT530004D05 D
Glossary
884 615 series
Technical Manual
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