Dead Bus Live Line (Dbll) - ABB REC 561 User Manual

1MRK 580 152-XEN
Page 5 - 26
4.3.2 Dead bus live line
(DBLL)
Synchronism and energizing
check for single circuit breaker
with voltage selection
1 Set these MMI settings:
Parameter
Operation
InputPhase
USelection
AutoEnerg
ManEnerg
UHigh
ULow
FreqDiff
PhaseDiff
UDiff
tAutoEnerg
tManEnerg
2 Apply a single-phase voltage 100% U
single-phase voltage 30% U
3 Check that the SYN1-AUTOOK and SYN1-MANOK outputs are
activated.
4 Increase the U-Line (UL1) to 60% U
to 100% U /sqr3. The outputs should not be activated.
r
5 The test can be repeated with different values on the U-Bus and the
U-Line.
The test should verify that the energizing function operates for a low volt-
age on the U-bus and for a high one on the U-line. This corresponds to an
energizing of a dead bus from a live line.
1 Change the MMI settings AutoEnerg and ManEnerg to DBLL.
2 Apply a single-phase voltage of 30% U
single-phase voltage of 100% U
3 Check that the SYN1-AUTOOK and SYN1-MANOK outputs are
activated.
4 Decrease the U-line to 60% U
U /sqr3.
r
The outputs should not be activated.
5 The test can be repeated with different values on the U-bus and the U-
line.
ABB Network Partner AB
Setting
On
UL1
SingleBus
DLLB
DLLB
80% U /sqr3
r
40% U /sqr3
r
0,05 Hz
45°
15%
0.5 s
0.5 s
/sqr3 to the U-bus (U5), and a
r
/sqr3 to the U-line (UL1).
r
/sqr3 and U-Bus(U5) to be equal
r
/sqr3 to the U-bus (U5) and a
r
/sqr3 to the U-line (UL1).
r
/sqr3 and keep the U-bus equal to 30%
r
Version 1.0-00