Recommended Start-Up Procedure - Allen-Bradley 1407-CGCM User Manual

An appropriately calibrated 3-phase voltage and 3-phase current source is
recommended to simulate generator and system power conditions at known
operating points of interest. These can be connected to the CGCM VT and CT
input terminals in place of system VT and CT instruments.
primary current applied. Wiring between the CTs and the CGCM unit must
include a shorting terminal block in the CT secondary circuit. Shorting the
secondary with primary current present lets you remove other connections
if needed. An open CT secondary with primary current applied produces a
hazardous voltage, which can lead to personal injury, death, property
damage or economic loss.
Perform the static and dynamic redundancy tests described below.
Perform recommended start-up procedures on each unit when commissioning
redundant CGCM systems. Remove control power from the other CGCM unit
prior to start-up procedures.
Follow these steps to perform the initial checkout.
1. Inspect physical installation of the CGCM unit and associated hardware.
2. Inspect all related CGCM unit wiring interconnections.
3. Verify that grounding wiring is correctly installed and that CT wiring has
been correctly installed by using shorting terminal blocks or test switches
you provided.
4. Verify that all safety related measures have been properly taken; such as
locking and tagging out power interconnections and prime mover
capability.
Follow these steps to apply power to the CGCM unit.
1. Apply control power (24V DC) to the unit.
2. Verify that following the CGCM unit's initial power self test, the
ControlNet media status indicators flash and then become solid green.
Rockwell Automation Publication 1407-UM001H-EN-P - November 2014
Never open a current transformer (CT) secondary circuit with
CGCM Unit Startup