Breaker Monitoring Sscbr - ABB RELION RET670 Applications Manual

1MRK 504 163-UUS A
18.4
18.4.1
18.4.2
Transformer protection RET670 2.2 ANSI
Application manual
tTempAlarm: This is used to set the time delay for a temperature alarm indication,
given in s.
tTempLockOut: This is used to set the time delay for a temperature lockout indication,
given in s.
tResetLevelAlm: This is used for the level alarm indication to reset after a set time
delay in s.
tResetLevelLO: This is used for the level lockout indication to reset after a set time
delay in s.
tResetTempLO: This is used for the temperature lockout indication to reset after a set
time delay in s.
tResetTempAlm: This is used for the temperature alarm indication to reset after a set
time delay in s.

Breaker monitoring SSCBR

Identification
Function description
Breaker monitoring
Application
The circuit breaker maintenance is usually based on regular time intervals or the
number of operations performed. This has some disadvantages because there could be
a number of abnormal operations or few operations with high-level currents within the
predetermined maintenance interval. Hence, condition-based maintenance scheduling
is an optimum solution in assessing the condition of circuit breakers.
Circuit breaker contact travel time
Auxiliary contacts provide information about the mechanical operation, opening time
and closing time of a breaker. Detecting an excessive traveling time is essential to
indicate the need for maintenance of the circuit breaker mechanism. The excessive
travel time can be due to problems in the driving mechanism or failures of the contacts.
IEC 61850 IEC 60617
identification identification
SSCBR -
Section 18
Monitoring
GUID-0FC081B2-0BC8-4EB8-9529-B941E51F18EE v7
ANSI/IEEE C37.2
device number
-
GUID-45572680-3A39-4B3C-8639-4E4C5A95AA26 v9
879