Circuit Breaker Gas Pressure Indication - ABB Relion 650 Series Technical Manual

Section 10
Monitoring
10.4.7.8
10.4.8
406
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.

Circuit breaker gas pressure indication

The circuit breaker gas pressure indication subfunction monitors the gas pressure
inside the arc chamber. The operation is described in figure 197.
PRESALM
BLOCK
BLKALM
PRESLO
IEC12000622 V3 EN-US
Figure 197: 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.
Technical data
Table 326: SSCBR Technical data
Function
Alarm level for open and close
travel time
Alarm level for number of
operations
Independent time delay for
spring charging time alarm
Table continues on next page
tDGasPresAlm
AND
t
tDGasPresLO
AND
t
Range or value
(0 – 200) ms
(0 – 9999)
(0.00 – 60.00) s
1MRK 511 424-UEN B
GUID-9D070D52-B499-4D45-9195-60181819184E v10
GPRESALM
GPRESLO
GUID-B6799420-D726-460E-B02F-C7D4F1937432 v9
Accuracy
±3 ms
-
±0.2% or ±30 ms whichever is
greater
Bay control REC650 2.2 IEC
Technical manual