ABB REF 610 Operator's Manual page 42

REF 610 REF 610
42
Feeder Protection Relay
Operator's Manual - ANSI Version
When a protection element trips, the text TRIP appears on the display along with
the name of the function. Additionally, the name of the energizing input(s) which
caused the fault are displayed (except for the thermal protection and phase
discontinuity protection). The red target is lit.
TRIP
50P-1
Fig. 4.3.2.1.-2 Trip target
In case of an alarm from the thermal overload protection, the text ALARM appears on
the display along with the function symbol and the yellow target LED is lit.
ALARM
49
Fig. 4.3.2.1.-3 Alarm target
If the auto-reclose function has generated the definite trip alarm signal, the text
DEF. TRIP ALARM will appear on the display to indicate that the CB has been left
in the open position and that no more auto-reclosures are being generated.
If a pickup or trip target for the element that initiated an ongoing auto-reclose shot is
cleared, the text Shot Due appears on the display to indicate that a shot is ongoing
and that the CB will be closed after expiration of the dead time.
In case the CB reclosing failed or it is disabled, this is indicated on the display with
the text RECLOSING FAILED.
If the auto-reclose function has generated the lockout signal, the text LOCKOUT will
appear on the display to indicate that the whole auto-reclose function is temporarily
disabled.
DEF. TRIP ALARM
79
Fig. 4.3.2.1.-4 Definite Trip-alarm target
la/lb
1MRS755539
A070075
A040274
A040276