Alarm limit check
If the time taken by the spring to charge is more than the value set with the
SpChAlmTime
setting, the subfunction generates the
SPCHALM
alarm.
It is possible to block the
SPCHALM
alarm signal by activating the
BLKALM
binary
input.
14.4.7.8
Circuit breaker gas pressure indication
GUID-9D070D52-B499-4D45-9195-60181819184E v10
The circuit breaker gas pressure indication subfunction monitors the gas pressure
inside the arc chamber. The operation is described in figure
.
PRESLO
BLOCK
BLKALM
PRESALM
GPRESALM
GPRESLO
t
tDGasPresAlm
t
tDGasPresLO
AND
AND
IEC12000622 V3 EN-US
Figure 302:
Functional module diagram for circuit breaker gas pressure
indication
When the
PRESALM
binary input is activated, the
GPRESALM
output is activated
after a time delay set with the
tDGasPresAlm
setting. The
GPRESALM
alarm can be
blocked by activating the BLKALM input.
If the pressure drops further to a very low level, the
PRESLO
binary input goes
high, activating the lockout alarm
GPRESLO
after a time delay set with the
tDGasPresLO
setting. The
GPRESLO
alarm can be blocked by activating the
BLKALM
input.
The binary input
BLOCK
can be used to block the function. The activation of the
BLOCK
input deactivates all outputs and resets internal timers. The alarm signals
from the function can be blocked by activating the binary input
BLKALM
.
14.4.8
Technical data
GUID-B6799420-D726-460E-B02F-C7D4F1937432 v8
Table 417:
SSCBR Technical data
Function
Range or value
Accuracy
Alarm level for open and close
travel time
(0 – 200) ms
±3 ms
Alarm level for number of
operations
(0 – 9999)
-
Independent time delay for
spring charging time alarm
(0.00 – 60.00) s
±0.2% or ±30 ms whichever is
greater
Table continues on next page
Section 14
1MRK 506 382-UEN A
Monitoring
584
Line distance protection REL650 2.2 IEC
Technical manual
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