ABB RELION REX640 - 5.9.7 Signals; 5.9.7.1 DSTPLAL Input signals; 5.9.7.2 DSTPLAL Output signals; 5.9.8 DSTPLAL Settings

the breaker at the remote end has been opened and the load flowing through has
therefore been disconnected. This current can be, for example, due to the charging
current of the phases or the load current of the tapped loads. The Minimum current
setting value is set below the Load current value setting. By default, the Minimum
current setting value is set to "0.05 pu".
The Minimum current time setting is used to provide the start delay for the loss of
load current detection to avoid an unwanted release of the function. The value of
Minimum current time is by default set to "0.2 s".
5.9.7 Signals
5.9.7.1 DSTPLAL Input signals
Table 1176: DSTPLAL Input signals
Name Type Default Description
I3P SIGNAL - Three-phase currents
BLOCK BOOLEAN 0=False Block signal for acti-
vating the blocking
mode
AR_READY BOOLEAN 0=False Autoreclosure ready,
releases function
used for fast trip
CB_CL_CMD BOOLEAN 0=False CB close command
EX_ACC BOOLEAN 0=False Connected to func-
tion used for tripping
at zone extension
LOSSLOAD_ACC BOOLEAN 0=False Connected to func-
tion used for tripping
at loss of load
NONDIR_ST BOOLEAN 0=False Non directional crite-
ria used to prevent in-
stantaneous trip
5.9.7.2 DSTPLAL Output signals
Table 1177: DSTPLAL Output signals
Name
Type Description
OPR_LOSSLOAD BOOLEAN Operate by loss of load
OPR_Z_EXTN BOOLEAN Operate by zone extension
5.9.8 DSTPLAL Settings
1MRS759142 F
Protection related functions
REX640
Technical Manual
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