ABB RELION REX640 Technical Manual page 164

Protection and control

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Table of Contents

Basic functions

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 POSP1 and POSP2

Dual (series-connected) single-pole (normally open/form A) power output contacts

POSP1 and POSP2 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 the power supply module in slot G.

Figure 59: Dual single-pole power outputs in power supply module

Double-pole power outputs PODP1, PODP2 and PODP3 with trip

circuit supervision

The power outputs PODP1, PODP2 and PODP3 are double-pole normally open/

form A power outputs with trip circuit supervision. The trip circuit supervision

hardware includes constant current generator to provide trip circuit supervision

(TCS) current and TCS input that can be connected to the TCS function with

Application Configuration in PCM600. See Trip circuit supervision TCSSCBR function

for TCS connections.

When the two poles of the contacts are connected in series, they have the same

technical specification as POSP1/POSP2 for breaking duty. Contacts PODP1, PODP2

and PODP3 are usually used for energizing the breaker trip coils.

The power outputs are included in the power supply module in slot G.

1MRS759142 F

Technical Manual