Trip Output Contacts; Trip Outputs To - ABB RELION REF615R Technical Manual

1MRS240050-IB C
3.10.1
3.10.1.1
REF615R
Technical Manual
protection relay to external annunciation equipment for indicating, signalling and
recording.
All output contacts, except IRF output, are trip duty rated (Trip Output) and are designated
as TRIP, OUT1, OUT2...OUT6. There are two types of these trip output contacts either
marked as TO for normal binary output contacts or HSTO for high-speed output contacts.
They can be used for controlling a breaker, such as, energizing the breaker trip and closing
coils.
The contacts can also be used for external signalling, recording and indicating functions,
but they can require a minimum current (burden) to ensure a guaranteed operation.
All contacts are freely programmable, except the internal fault output IRF.

Trip output contacts

Trip output contacts are normally used for energizing the breaker closing coil and trip coil,
external high burden lockout or trip relays.

Trip outputs TO

Trip output contacts are either dual NO contacts in series (Form A) or dual change-over
contacts (Form C) in parallel. When the latter is provided, typically provision is made
within the protection relay to change the connection to either NO (Form A) or NC (Form
B). See a typical connection diagram of some of the inputs in
Section 3
Basic functions
Figure 22.
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