Section 7 Calibrating injection based 100% stator
earth fault protection
7.1 Commissioning process
GUID-F7897190-70E1-4421-984B-8E0F06BB93CD v1
The commissioning process utilizes the commissioning tool ICT. The instructions for
the process cover installation, calibration, commissioning, monitoring and auditing for
the 100% stator earth fault STTIPHIZ (64S) function.
7.2 Commissioning tool ICT
GUID-06D3DD66-7D49-4D92-A175-AD1AE5ED19C3 v2
The 100% stator and rotor earth fault protection STTIPHIZ (64S) functions in IED
require a number of settings. The settings k1, k2 and the reference impedance require
measurements on the generator performed by the ICT (injection commissioning tool).
The factors are derived in connection to the calibration measurements during
commissioning. The ICT tool is an integrated part of the PCM600 tool.
Furthermore, ICT also assists the commissioning engineer to perform a successful
installation because of its structure and validating capabilities. During installation,
commissioning and calibration, ICT performs various tests to verify that the
installation is acceptable and the calibration successful. Besides carrying out the actual
tests, ICT also provides the commissioning engineer with tips if such are needed
during the commissioning.
When ICT is started, 100% stator earth fault protection is chosen.
There are five different parts of the ICT tool to be performed during commissioning
and operation:
1. Installing
2. Calibrating
3. Commissioning
4. Monitoring
5. Auditing
Before proceeding make sure that all necessary connections are in place.
1MRK 502 073-UUS A Section 7
Calibrating injection based 100% stator earth fault protection
Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062 79
Commissioning manual
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