blocked by the master trip TRPPTRC1 and TRPPTRC2 and the circuit breaker open
signal.
It is assumed that there is no external resistor in the circuit breaker
tripping coil circuit connected in parallel with the circuit breaker
normally open auxiliary contact.
TCSSCBR1
BLOCK ALARM
TCSSCBR2
BLOCK ALARM
OR
B1
B2
O
TCSSCBR1_ALARM
TCSSCBR1_ALARM
TCSSCBR2_ALARM
TCSSCBR2_ALARM
TCSSCBR_BLOCKING
TCSSCBR_BLOCKING
TCSSCBR_ALARM
GUID-24DC11D9-925E-4A66-B557-E98F24BBE186 V1 EN
Figure 473: Trip circuit supervision function
OR6
B1
B2
B3
B4
B5
B6
O
TRPPTRC2_TRIP
X130_BI3_CB_OPENED
TRPPTRC1_TRIP TCSSCBR_BLOCKING
GUID-6CBCCEE3-8358-4C86-A07B-3877DB98679B V1 EN
Figure 474: Logic for blocking trip circuit supervision
3.12.3.4 Functional diagrams for control and interlocking
The main purpose of the synchronism and energizing check SECRSYN is to provide
control over the closing of the circuit breakers in power networks to prevent the
closing if conditions for synchronism are not detected. The energizing function allows
closing, for example, when one side of the breaker is dead.
SECRSYN measures the bus and line voltages and compares them to set conditions.
When all the measured quantities are within set limits, the output SYNC_OK is
activated for allowing closing or closing the circuit breaker. The SYNC_OK output
signal of SECRSYN is connected to ENA_CLOSE input of CBXCBR through control
logic. The function is blocked in case of line side or bus side MCB is open.
1MRS756378 S Section 3
REF615 standard configurations
REF615 311
Application Manual
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