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Operator’s Manual
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Indication messages (priorities 1-3) automatically give an overview of protection
and condition monitoring operations and internal relay faults. The indications are
shown in a priority order in the assisting window and will remain active until
acknowledged by pressing [C] for two seconds.
When an indication message is displayed in the assisting window, no help
messages are displayed until the window has been cleared.
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When one of the protection functions of the terminal starts, the name of the
corresponding protection function block and the text “:START” are displayed in the
assisting window and the yellow LED indicator is lit. In the case of three-phase and
two-phase protection functions, the faulted phases are also displayed.
When the started protection function is blocked, the name of the corresponding
function block and the text “:BLOCK” are displayed in the assisting window and the
yellow LED indicator is blinking.
When the protection function trips, the name of the function block and the text
“:TRIP” are displayed in the assisting window and the red LED indicator is lit. In
the case of three-phase and two-phase protection functions, the faulted phases are
also displayed.
When the protection function has tripped but the fault has not disappeared, the
protection function delivers a delayed trip signal for CBFP, circuit-breaker failure
protection. CBFP is indicated by the red, blinking LED indicator. The name of the
tripped function block and the text “:TRIP” also remain in the assisting window.
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assistar
N O C 3 L o w : S T A R T
L 1 , L 2 , L 3
assiblok
N O C 3 L o w : B L O C K
assitrip
N O C 3 L o w : T R I P
L 1 , L 2 , L 3
assitrip
N O C 3 L o w : T R I P
L 1 , L 2 , L 3
Summary of Contents for REF 54 Series
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