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9.
Inrush threshold [%]: If the ratio of second harmonics versus fundamental harmonics is exceeded the device prevents the
tripping operation. Range [10-40].
10.
Reset Time [s]: Time in seconds to reset the fault counts, if no fault condition are met. Range [10-300].
11.
Dead Line Threshold [mA]: Value in mA RMS below which the line is considered deenergized. Range [200-700].
12.
Enable status Led: If set in configuration, the LED will blink in case of primary current flow beyond Dead current threshold
every 10s.
13.
Allow partial trip: If set in the configuration, the tripping operation can be done according to the rules in three-phase conditions,
if set by flag
Here, below four scenario, which should get confidence on the setting parameters.
C.4.4.4.1.
Compatibility among tools and firmware revisions
The new settings functionalities introduced in the firmware has required software changes in the windows tab and changes in configuration
parameters.
Here in below the compatibility matrix from WiACT tool and Firmware revision level
FW <1.3
FW 1.3
WiACT 1.0
OK
No compatible
WiACT 1.3
OK
OK
No problem with configuration files compatibility:
The new WiACT 1.3 can read configuration files generated by the old 1.0. By default, the new Status LED enabled and Partial Trip
Allowed features, not contained in the old configuration, are disabled. By saving the file from WiACT 1.3, the file is converted to the new
format which also contains the two new parameters.
The old WiACT 1.0 can read the configuration files generated by the new 1.3. The Status LED enabled and Partial Trip Allowed
parameters are simply ignored. By saving the file from WiACT 1.0, the file is converted to the old format which does not contain the two
new parameters.
C.4.4.4.2.
Scenario_1: Three-Phase standard operation
In the case, for example to configure the wiAutoLink for tripping only on permanent faults at 2 counts in a 50 Hz grid of a nominal
current of 50A in three phase mode with 30 seconds to reset the fault counts, enable Status LED is enable, and allowed partial trip is disable.
Pickup current shall be at least set 20% lower than the minimum pick up threshold of the recloser protection.
The dead line threshold shall be configured according to the current when the recloser is open (e.g. 200mA).
In the normal condition the LED flashing every 10s.
The inrush threshold shall be configured to distinguish between line energizing and fault conditions. The inrush threshold also
helps to detect faults on overhead lines affected by long decay dc component (>100ms). If that is a foreseen case, the inrush threshold shall
be set at maximum (40%).
The tripping operation will be followed on all three-phase apparatus when the tripping counting overload conditions are achieved.
To download parameters into wiAutolink, please refer to the configuration wizard instruction section:
Network Pin: 1234
Pickup Current: 60A.
Inrush threshold: 40%
Device Type: Three phase.
Frequency Setting: 50 Hz.
Reset Time: 30 s.
Count settings: 2.
Zero Current Threshold: 200 mA
Enable Status LED: yes
Allow partial trip: no
