FANOX SIL-A A Series, Руководство пользователя, Страница: 51 / 112

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5 GENERAL SETTINGS
General settings establish some parameters that are necessary for the relay to operate. These settings
are defined as general because they affect the entire relay, and as a result they are not subject to a
change of table.
Any change to settings involves resetting the functions, regardless if they are active or not.
5.1 Measurements
Function Description Minimum Maximum Step Unit Default
Measurements
Frequency 50 60 50/60 Hz 50
Phase Nominal Current 1 5 1/5
(1)
A 1
Neutral Nominal Current 1 5 1/5
(1)
A 1
CT Phase Ratio 1.0 3000.0 0.1 - 100.0
CT Neutral Ratio 1.0 3000.0 0.1 - 100.0
IA Deadband 0.03 0.5 0.01 A 0.10
IB Deadband 0.03 0.5 0.01 A 0.10
IC Deadband 0.03 0.5 0.01 A 0.10
IN Deadband 0.03 0.5 0.01 A 0.10
(1)
The phase and neutral CT nominal current setting allows to choose between 1A or 5A if model
SILA00xxxxxxxx is selected. If the model is SILA11xxxxxxxx, the nominal current is fixed to 1A.
Frequency: Displays the device’s frequency. It is possible to change the rated frequency (50/60Hz).
The phase and neutral CT transformation ratio setting allows the measurements of the primary values
from the protection transformer to be showed.
5.2 DFR
Function Description Minimum Maximum Step Unit Default
DFR
Num. of Records - -
25x60, 5x260,
100x15, 50x30
cycles 25x60 cycles
Cycles Prefault 1 8 1 cycles 8