ABB RELION REX640 Technical Manual page 1361

1MRS759142 F
OPEN_CB_EXE
CLOSE_CB_EXE
RST_CB_WEAR
PRES_ALM_IN
Figure 771: Functional module diagram
7.1.5.1 Circuit breaker status
The Circuit breaker status sub-function monitors the position of the circuit breaker,
that is, whether the breaker is in open, closed or invalid position. The operation of
the breaker status monitoring can be described by using a module diagram. All the
modules in the diagram are explained in the next sections.
REX640
Technical Manual
POSCLOSE
POSOPEN
I_A
I_B
I3P
I_C
BLOCK
RST_TRV_T
RST_IPOW
RST_SPR_T
SPR_CHR_ST
SPR_CHR
PRES_LO_IN
Condition monitoring functions
Circuit
breaker
status
Operation
monitoring
Breaker
contact
travel time
Operation
counter
Accumula-
ted energy
Breaker
life time
Spring
charge
indication
Gas
pressure
supervisio
n
OPENPOS
CLOSEPOS
INVALIDPOS
MON_ALM
TRV_T_OP_ALM
TRV_T_CL_ALM
OPR_ALM
OPR_LO
IPOW_ALM
IPOW_LO
CB_LIFE_ALM
SPR_CHR_ALM
PRES_ALM
PRES_LO
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