Section 6 Calibrating injection based sensitive rotor
earth fault protection
6.1 Commissioning process
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The commissioning process utilizes the commissioning tool ICT. The instructions for
the process cover installation, calibration, commissioning, monitoring and auditing for
the sensitive rotor earth fault ROTIPHIZ (64R) function.
6.2 Commissioning tool ICT
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The sensitive rotor earth fault protection function in IED requires 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. ICT 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 needed during the
commissioning.
When ICT is started, rotor earth fault protection is chosen.
There are five different parts of the ICT tool to be performed at 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 6
Calibrating injection based sensitive rotor earth fault protection
Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062 63
Commissioning manual
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