Technical Data - ABB REC650 Technical Manual

Section 12
Monitoring
12.17.7
12.18
12.18.1
12.18.2
488
after a set time delay and indicate that maintenance of the circuit breaker is required.
Similarly, if the input signal LVL_LO is high, which indicate oil level in the circuit
breaker is below lockout level, the output signal LVL_LO, will be initiated after a time
delay. The two time delay settings, tLevelAlarm and tLevelLockOut, are included in
order not to initiate any alarm for short sudden changes in the oil level. If the oil level
in the circuit breaker goes below the levels for more than the set time delays the
corresponding signals, LVL_ALM, level below alarm level and LVL_LO, level
below lockout level alarm will be obtained.
The input signal BLK_ALM is used to block the two alarms levels. The input signal
BLOCK is used to block both the alarms and the function.

Technical data

Table 426: SSIMLTechnical data
Function
Timers
Circuit breaker condition monitoring SSCBR
Identification
Function description
Circuit breaker condition monitoring
Functionality
The circuit breaker condition monitoring function SSCBR is used to monitor different
parameters of the circuit breaker. The breaker requires maintenance when the number
of operations has reached a predefined value. The energy is calculated from the
measured input currents as a sum of I
calculated values exceed the threshold settings.
The function contains a block alarm functionality.
The supervised and presented breaker functions include
• breaker open and close travel time
• spring charging time
• number of breaker operations
•
Y
accumulated I t per phase with alarm and lockout
• remaining breaker life per phase
• breaker inactivity
Range or value
(0.000-60.000) s
IEC 61850 IEC 60617
identification identification
SSCBR -
y
t values. Alarms are generated when the
1MRK 511 287-UEN A
Accuracy
± 0.5% ± 110 ms
ANSI/IEEE C37.2
device number
-
Technical manual