Basler Electric DECS-400 - Manual (Page 151)

9369700990 Rev R 139
Commissioning
This chapter provides generic procedures and information for testing the DECS-400 during excitation
system commissioning. These procedures do not account for the specific operating parameters of every
system; they are provided only as a guide.
Preparation
In these procedures, DECS-400 communication with a PC operating BESTCOMS is necessary to apply
DECS-400 settings and retrieve DECS-400 and system status information. Refer to the BESTCOMS
Software chapter for information about installing BESTCOMS and establishing communication between
BESTCOMS and the DECS-400.
Record System Parameters
Record the pertinent information for your system in the following spaces.
Generator Parameters
Vac
Hz
MW
Mvar
rpm
Main/Exciter Field Parameters
Vdc, full-load
Adc, full-load
Testing and Evaluation
The following procedures may be performed during system commissioning to verify DECS-400 settings
and performance.
Off-Line Tests—Turbine Not Spinning
For these tests, control of the machine is to be demonstrated via BESTCOMS, the DECS-400 front panel
human-machine interface (HMI), and user-supplied, remote switches. These tests will ensure that the
machine is not stressed because of incorrect wiring or faulty components. Recommended settings are
only temporary, initial settings.
Start/Stop Tests
Check the operation of the following start and stop switches.
•
Start/Stop from the Operation tab of the BESTCOMS Metering screen (see Figure 100
for illustration of Operation tab). ............................................................................................ ________
•
Start/Stop from the DECS-400 HMI....................................................................................... ________
•
Start/Stop from remote, user-supplied switch. ...................................................................... ________
Warning!
Field flashing current is used in the following steps. Even though the
turbine is not moving, serious injury could result from high, stator-
induced voltage. Verify that all personnel are clear of the machine
before performing the following steps. To ensure safety, the field
flashing fuses may be removed and only the unit start/stop capabilities
checked.
DECS-400 Commissioning