Human Machine Interface - ABB Protect IT REL 501 2.5 Series Operator's Manual

4
Introduction to the operator's manual
&6
&7
&97
'$5
'63
',3VZLWFK
'77
(+9 QHWZRUN
(,$
(0&
(0,
(6'
)2; 
)2; 
)2; 3OXV
*
*
*,
*,6
*36
+'/& SURWRFRO
+0,
+6$5
+9'&
,'%6
,(&
,(& 
,(& 
Carrier send
Current transformer
Capacitive voltage transformer
Delayed auto-reclosing
Digital signal processor
Small switch mounted on a printed circuit board
Direct transfer trip scheme
Extra high voltage network
Electronic Industries Association
Electro magnetic compatibility
Electro magnetic interference
Electrostatic discharge
Modular 20 channel telecommunication system for speech, data
and protection signals
Access multiplexer
Compact, time-division multiplexer for the transmission of up to
seven duplex channels of digital data over optical fibers
Electrical and functional description for digital lines used by local
telephone companies. Can be transported over balanced and un-
balanced lines
Standard for pulse code modulation of analog signals on digital
lines
General interrogation command
Gas insulated switchgear.
Global positioning system
High level data link control, protocol based on the HDLC standard
Human-Machine Interface
High-Speed Auto-Reclosing
High voltage direct current
Integrating dead-band supervision
International Electrical Committee
IEC Standard, Instrument transformers – Part 6: Requirements for
protective current transformers for transient performance
Communication standard for protective equipment. A serial master/
slave protocol for point-to-point communication
&KDSWHU 
,QWURGXFWLRQ