ABB RELION 620 Series Technical Manual page 569

1MAC504801-IB E
6.1.4.1
620 series ANSI
Technical Manual
A071103 V3 EN
Figure 277: Functional module diagram
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.
Section 6
Supervision functions
563