Basler DECS-200 User Manual

DECS-200 Setup 6-19
OEL Test
Disable overexcitation limiting on the System Options tab of the BESTCOMS System
Configuration screen..................................................................................................................... ________
Set the three on-line, OEL current limits at 15% above the no-load field current, with
a 5 second time delay ................................................................................................................... ________
Using a chart recorder, prepare to check the OEL response time. If the response time is too slow,
increase the OEL gain (KI and Kg terms) and repeat the test.
Increase field excitation until the field current reaches 125% of the no load field current setting ________
Enable OEL................................................................................................................................... ________
Verify that the response time is within specified limits.................................................................. ________
Enter final OEL values .................................................................................................................. ________
UEL Test
Disable underexcitation limiting on the System Options tab of the BESTCOMS System
Configuration screen..................................................................................................................... ________
Set the UEL var limit for 5% vars into the generator..................................................................... ________
Adjust the var level into the generator for 15% at 25% load......................................................... ________
Perform a step response into the UEL limit by enabling underexcitation limiting on the System
Options tab of the BESTCOMS System Configuration screen..................................................... ________
Verify stable performance and speed of response ....................................................................... ________
If the response time is too slow, increase the UEL gain (KI and Kg terms) and repeat the test .. ________
Verify stable performance of the UEL by testing the machine from 25 through 100%
real-power loading, underexcited.................................................................................................. ________
Increase the excitation above the UEL limit.................................................................................. ________
Enter the final UEL values ............................................................................................................ ________
Var Test (If Applicable)
Verify that the var setpoint is nulled to the AVR setpoint.............................................................. ________
Verify that all null status indicators provide a null indication......................................................... ________
Verify that the var Pre-Position mode is disabled or the external pre-position contacts are open ________
In the following step, be prepared to transfer back to AVR if the excitation voltage increases suddenly.
Transfer to var mode..................................................................................................................... ________
Set the kilowatt level for 25% output............................................................................................. ________
Adjust the var level to 30% of rated .............................................................................................. ________
Monitor the exciter field voltage to determine performance while performing the following step.
Using BESTCOMS, perform 5% step response stability test ....................................................... ________
If necessary, increase the var gain, (KI and Kg terms) to decrease the response time.
Repeat the test..............................................................................................................................
Power Factor Test (If Applicable)
Verify that the PF mode setpoint is nulled to the var mode setpoint ............................................ ________
Verify that all null status indicators provide a null indication......................................................... ________
Verify that PF Pre-Position mode is disabled or external pre-position contacts are open............ ________
In the following step, be prepared to transfer back to AVR mode if the excitation voltage increases
suddenly.
Transfer to PF ............................................................................................................................... ________

Basler DECS-200 Specifications

General

Brand	Basler
Model	DECS-200
Category	Controller
Language	English