ABB REL650 series, Technical Manual

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is longer than the time delay set on tR2 timer. It is possible to disable this condition
by connecting the logical 1 signal to the BLK_SS functional input.
• The INHIBIT internal signal is activated after the time delay, set on tR1 timer, if an
ground-fault appears during the power swing (input IOCHECK is high) and the
power swing has been detected before the ground-fault (activation of the signal
I0CHECK). It is possible to disable this condition by connecting the logical 1 signal
to the BLK_I0 functional input.
6.7.7 Technical data
Table 65: ZMRPSB (68) technical data
Function Range or value Accuracy
Reactive reach
(0.10-3000.00) W /phase
± 2.0% static accuracy
Conditions:
Voltage range: (0.1-1.1) x V
n
Current range: (0.5-30) x I
n
Angle: at 0 degrees and 85
degrees
Resistive reach
(0.10–1000.00) W /phase
Timers (0.000-60.000) s ± 0.5% ± 10 ms
Minimum operate current (5-30)% of IBase ± 1.0% of I
n
6.8 Automatic switch onto fault logic, voltage and current
based ZCVPSOF
6.8.1 Identification
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Automatic switch onto fault logic,
voltage and current based
ZCVPSOF - -
6.8.2 Functionality
Automatic switch onto fault logic, voltage and current based ZCVPSOF is a function that
gives an instantaneous trip at closing of breaker onto a fault. A dead line detection check
is provided to activate the function when the line is dead.
Mho distance protections can not operate for switch onto fault condition when the phase
voltages are close to zero. An additional logic based on VI Level shall be configured for
this purpose.
1MRK 506 335-UUS A
Section 6
Impedance protection
183
Technical manual