Ashida ADR233B - Check Relay Settings

Doc ID : ADR233B_IM_01
Ref ID : ADR233B/IM/TC
Rev No. : 05
Page No. : 467 of 479
ADR233B
Step 4: Apply AC or DC control voltage to the relay. After the relay is energized, the front-
panel green ENABLED LED should illuminate.
Step 5: Use the appropriate serial cable (USB to serial Cable or equivalent) for connecting a
PC with the relay.
Step 6: Start the RTV2 software and establish communication with the relay.
Step 7: Set the correct Date and Time in the relay by using keypad at the front panel or
serial port commands
Step 8: Verify the relay Current Transformer and Potential Transformer connections.
Step 9: Connect the current or voltage AC test source to the appropriate relay terminals.
Disconnect the current transformer and voltage transformer (if present) secondary
from the relay prior to applying test source quantities.
Step 10: Apply rated current (1A or 5A)
Step 11: If the relay is equipped with voltage inputs, apply rated voltage for your application.
11.3 Check Relay Settings
The relay settings are required to verify and ensure that protection application is functioning
correctly. Enter all setting based on required protection application manually via the relay front
panel interface.
The commissioning of following points:
• Check the over current and earth fault trip settings.
• Ensure the Differential setting and Transformer data.
• Ensure TMS setting of over current and Earth Fault are entered correctly as per required
time grading between feeder and incomer.
• Ensure instantaneous high set setting done correctly and its definite time delay is applied
properly as per required time grading between feeder and incomer.
• Ensure selection of extra latching type annunciation duty contacts is as per required
function.
• Ensure the measurement of applied current is same as the current measured in CT
secondary
• Ensure measurement of applied voltage is same as the voltage measured in PT secondary
Final Check
After completion of functionality testing and verification of relay setting, remove all tests as
temporary shorting leads etc. if it is necessary to disconnect any of the external wiring from the
relay in order to perform the wiring verification test. It should be ensured that the CT
connections are replaced in accordance with the relevant external connections or schemes