Functional Diagrams For Control And Interlocking - ABB RED615 Applications Manual

Line differential protection and control

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Section 3

RED615 standard configurations

3.4.3.3

GUID-E87263FE-32FF-415C-89F0-AEFC537D076C V1 EN

Figure 16:

Trip circuit supervision

Two separate trip circuit supervision functions are included, TCSSCBR1 for PO3

(X100:15-19) and TCSSCBR2 for PO4 (X100:20-24). Both functions are blocked

by the Master Trip (TRPPTRC1 and TRPPTRC2) and the circuit breaker open

signal. The TCS alarm indication is connected to LED 9.

By default it is expected that there is no external resistor in the

circuit breaker tripping coil circuit connected parallel with circuit

breaker normally open auxiliary contact.

Functional diagrams for control and interlocking

GUID-DA0317C8-79B8-4892-9BBD-C05240236D08 V1 EN

Figure 17:

Master Trip

The operate signals from the protections are connected to the two trip output

contacts PO3 (X100:15-19) and PO4 (X100:20-24) via the corresponding Master

Trips TRPPTRC1 and TRPPTRC2. Open control commands to the circuit breaker

from local or remote CBXCBR1-exe_op is connected directly to the output PO3

(X100:15-19).

1MRS756498 D

RED615

Application Manual

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