Application; Signals - ABB RELION 620 Series Technical Manual

Section 4
Protection functions
4.4.2.5
4.4.2.6
350
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.

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.

Signals

Table 287: 32N Input signals
Name Type
V2 REAL
VG REAL
VN REAL
I2 REAL0
IG REAL
IN REAL
BLOCK BOOLEAN
RCA_CTL BOOLEAN
Table 288: 32N Output signals
Name Type
RELEASE BOOLEAN
DIRECTION Enum
Default Description
0 Negative sequence voltage
0 Measured residual voltage or Ground voltage
0 Calculated residual voltage or Neutral voltage
0 Negative sequence current
0 Measured residual current or Ground current
0 Calculated residual current or Neutral current
0=False Block signal for activating the blocking mode
0=False Relay characteristic angle control
Description
direction signal
Direction information
1MAC504801-IB E
620 series ANSI
Technical Manual