Power Output Contacts; Dual Single-Pole Power Outputs Po1 And Po2 - ABB RELION 620 Series Technical Manual

1MRS757644 F
3.12.1
3.12.1.1
620 series
Technical Manual
can also be used to energize an external trip relay, which in turn can be confiugred to
energize the breaker trip or close coils.
Using an external trip relay can require an external trip circuit
supervision relay. It can also require wiring a separate trip relay
contact back to the protection relay for breaker failure protection
function.
All contacts are freely programmable, except the internal fault output IRF.

Power output contacts

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

Dual single-pole power outputs PO1 and PO2

Dual (series-connected) single-pole (normally open/form A) power output contacts
PO1 and PO2 are rated for continuous current of 8 A. The contacts are normally used
for closing circuit breakers and energizing high burden trip relays. They can be
arranged to trip the circuit breakers when the trip circuit supervision is not available
or when external trip circuit supervision relay is provided.
The power outputs are included in slot X100 of the power supply module.
PO1
PO2
GUID-4E1E21B1-BEEC-4351-A7BE-9D2DBA451985 V1 EN
Figure 26: Dual single-pole power output contacts PO1 and PO2
X100
6
7
8
9
Section 3
Basic functions
107