Rockwell Automation 1407-CGCM Combination Generator Control Module - Manual (Page 114)

114 Rockwell Automation Publication 1407-UM001G-EN-P - April 2013
Chapter 5 CGCM Unit Startup
Phase Rotation Error (47)
Follow these steps to test that the Phase Rotation Error function is working
properly.
1. Apply simulated generator voltage signals by using the test voltage source,
opposite to the configured phase rotation.
2. Adjust the simulated generator voltage to the rated generator voltage.
3. Verify that a phase rotation fault alarm is annunciated following the
expected delay.
Generator Over-current (51)
Follow these steps to test that the Generator Over-current function is working
properly.
1. Apply simulated generator voltage and current signals by using the test
current and voltage source.
2. Adjust the simulated generator voltage to rated generator voltage.
3. Adjust the current above the desired test trip time point on the selected
over-current curve.
4. Verify that a generator over-current alarm is annunciated following the
expected delay.
The delay is a function of the curve, time dial selections, voltage restraint
settings, and the simulated generator current and voltage applied.
5. Repeat as desired to verify various points on the characteristic curve
selected.
Reconnect All Permanent Connections
Following all static testing, reconnect all permanent connections that were
temporarily removed. These connections can include VT and CT input
connections, excitation power, and exciter field connections.
Refer to the system installation and wiring documentation.
Operational Testing of the CGCM Unit’s Functions
These tests can be performed to verify the applicable operational functions of the
CGCM unit. These tests are performed with the generator and prime mover
fully functional. These steps are assumed to be performed in order, so that the
conditions at the end of one step exist at the beginning of the next step.