Functional Diagrams For Control And Interlocking - ABB REU615 Applications Manual

Section 3
REU615 standard configurations
3.4.3.3
40

Functional diagrams for control and interlocking

GUID-4F3709BF-87AC-4EB7-86AE-0FD490AA925A V1 EN
Figure 19: Synchronism and energizing check
The synchronism and energizing check (SECRSYN) function is offered in the
standard configuration. It is used for interconnecting two separate power system
network parts. The standard configuration is implemented to be used as continuous
mode by default. The permission signal for circuit breaker closing is connected to
X100:PO2 and it can be used in series in circuit breaker closing circuit. The
information that systems are synchronous to be interconnected is connected to LED
8.
SECRSYN is blocked if primary voltage transformer fuse is blown (X130:BI1) or
if the miniature circuit breaker failure is detected from the line or bus-side
secondary voltage measuring circuit (X130:BI2 or X130:BI3).
1MRS757054 A
REU615
Application Manual