ABB RELION REX640 Technical Manual page 1284

Protection and control

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Protection related functions

below the minimum level before

state is activated. If the drop-off continues for more than

deactivated.

Blocking logic

The binary input BLOCK can be used to block the function. The activation of the

BLOCK input deactivates the RELEASE output and resets Timer.

The three-phase power directional element function DPSRDIR improves the

possibility to obtain a selective function of the overcurrent protection in meshed

networks. DPSRDIR is used to block or release other overcurrent protection

DPSRDIR Input signals

Table 1213: DPSRDIR Input signals

DPSRDIR Output signals

Table 1214: DPSRDIR Output signals

DPSRDIR Settings

Table 1215: DPSRDIR Group settings (Basic)

Values (Range)

Release delay time

Characteristic an-

Table continues on the next page

Release delay time is exceeded, the Timer reset

Reset delay time , Timer is

Three-phase currents

Three-phase voltages

Block signal for acti-

vating the blocking

Release signal if direction cri-

teria is satisified

Direction information

1MRS759142 F

Release delay time

Characteristic an-

Technical Manual