ABB RELION 670 Series Technical Manual page 1065

1MRK 502 066-UUS B
Alarm limit check
If the time taken by the spring to charge is more than the value set with the
the subfunction generates the SPCHALM alarm.
It is possible to block the SPCHALM alarm signal by activating the BLKALM binary input.
16.4.7.8 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
PRESALM
BLOCK
BLKALM
PRESLO
ANSI12000622 V1 EN-US
Figure 554: 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
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
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.
16.4.8 Technical data
Table 769: 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
Independent time delay for gas
pressure alarm
Independent time delay for gas
pressure lockout
Table continues on next page
Technical manual
tDGasPresAlm setting. The GPRESALM alarm can be blocked by activating the BLKALM
Range or value
(0 – 200) ms
(0 – 9999)
(0.00 – 60.00) s
(0.00 – 60.00) s
(0.00 – 60.00) s
Figure 554.
tDGasPresAlm
AND
0
tDGasPresLO
AND
0
tDGasPresLO setting. The GPRESLO alarm
Monitoring
SpChAlmTime setting,
GUID-9D070D52-B499-4D45-9195-60181819184E v9
GPRESALM
GPRESLO
GUID-B6799420-D726-460E-B02F-C7D4F1937432 v9
Accuracy
±3 ms
-
±0.2% or ±30 ms whichever is
greater
±0.2% or ±30 ms whichever is
greater
±0.2% or ±30 ms whichever is
greater
Section 16
1059