Toshiba GR-200 Series Instruction Manual page 30

Abbreviation
Abbreviation Description
ADC Analog to digital converter
BCU Bay Control Unit
BI Binary Input module or circuit
BO Binary Output module or circuit
BIO Binary Input and Output module or circuit
CB Circuit Breaker
CPU Signal processing and communication module
CT Current Transformer
DS Disconnecting Switch
EF Earth Fault
ES Earthing Switch
EWS Engineering Workstation in the substation
GPS Global Positioning System
GR-TIEMS GR-series Toshiba IED Engineering and Monitoring Software
HMI Human Machine Interface
IED Intelligent Electronic Device
IDMT Inverse Definite Minimum Time
LCD Liquid Crystal Display for IED screen (standard LCD screen)
LCP Local Panel for Controlling
LED Light Emitting Diode
NA Not Applicable
N/C Normally Closed
N/O Normally Open
OWS Operator Workstation in the substation
PC Personal Computer for maintenance
PCB Printed circuit board
PLC Programmable Logic Controller
RCC Remote Control Centre
SAS Substation Automation System
SC Station Computer
TCP/IP Transmission Control Protocol/ Internet Protocol
UTC Coordinated Universal Time
SyncSrc Synchronization Source
VT Voltage Transformer
VCT Transformer module including VTs and CTs
43 Selector device or selector switch
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GRE200 (1,2)