ABB REG670 Commissioning Manual page 94

Section 7
Calibrating injection based 100% stator earth fault protection
88
impedance reference is not described here but in a separate application note
1MRG005030 Application example for injection based 100% Stator EF and Sensitive
Rotor EF protection.
The injection commissioning tool (ICT) helps the commissioning engineer to acquire
additional references for different conditions of the generator. The below description
assumes that reference 1 was set during calibration and that a second reference must be
set now.
If the second reference impedance shall be defined and the logic to switch from the
first impedance to the second one is already active in the configuration, then set the
second reference impedance equal to the first reference impedance before starting the
procedure in the Commissioning tab. The trip of the function should be blocked, as
advised by the pop-up window of ICT.
A similar approach is advised for the other available reference impedances.
1. Ensure that the generator is in a state where the reference must be set (for
example normal operation).
2. To start, select the Commissioning tab.
3. In the Reference impedance selection drop-down menu. select Reference 2.
4. To start reading the measurements, click the Start reading values from IED
button in the ICT toolbar.
ICT starts to read the selected viewed quantity from IED and plots values on the
X/Y graph.
Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062
1MRK 502 073-UUS A
Commissioning manual