ABB RELION REF615R, Техническое руководство

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Timer
Once activated, the internal operating timer is started. The Timer characteristic is
according to DT. When Timer has reached the value of
Release delay time , the
RELEASE
output is activated. If a drop-off situation happens, that is, if the operating current moves
out of the operating sector or signal amplitudes drop below the minimum levels, before
Release delay time is exceeded, the Timer reset state is activated. If the drop-off continues
for more than Reset delay time , Timer is deactivated.
Blocking logic
The binary input
BLOCK
can be used to block the function. The activation of the
BLOCK
input deactivates
RELEASE
output and resets Timer.
4.4.2.5 Application
The ground directional power protection 32N improves the possibility to obtain selective
function of the overcurrent protection in meshed networks. 32N is used to block or release
other overcurrent protection functions.
4.4.2.6 Signals
Table 231: 32N Input signals
Name Type Default Description
V2 REAL 0 Negative sequence voltage
VG REAL 0 Measured residual voltage or Ground voltage
VN REAL 0 Calculated residual voltage or Neutral voltage
I2 REAL0 0 Negative sequence current
IG REAL 0 Measured residual current or Ground current
IN REAL 0 Calculated residual current or Neutral current
BLOCK BOOLEAN 0=False Block signal for activating the blocking mode
RCA_CTL BOOLEAN 0=False Relay characteristic angle control
Table 232: 32N Output signals
Name Type Description
RELEASE BOOLEAN direction signal
DIRECTION Enum Direction information
1MRS240050-IB C
Section 4
Protection functions
REF615R 293
Technical Manual