Doc ID : ADR241B-DO_IM_01
Ref ID : ADR241B/IM/TC
Rev No.
: 06
Page No. : 266 of 272
ADR241B
Step 6:
Start the PC terminal emulation software and establish communication with the
relay.
Step 7:
Set the correct relay time and date by using either the front panel or serial port
commands
Step 8:
Verify the relay ac connections.
Step 9:
Connect the ac test source current to the appropriate relay terminals. Disconnect
the current transformer secondary from the relay prior to applying test source
quantities.
Step 10:
Apply rated current (1 A or 5 A).
Step 11:
If the relay is equipped with voltage inputs, apply rated voltage for your
application.
11.3
Check Relay Setting
The relay setting check ensures that all of application specific relay setting for the particular
installation have been correctly applied to the relay. Enter all setting manually via the relay
front panel interface.
The commissioning of following points:
a. Ensure over current and earth fault trip setting.
b. Ensure TMS setting of over current and Earth Fault are entered correctly as per
required time grading between feeder and incomer.
c. Ensure instantaneous HF setting done correctly and its definite time delay is applied
properly as per required time grading between feeder and incomer.
d. Ensure selection of extra annunciation duty contacts is as per required function.
e. Ensure measure of applied current is same as the current measure in CT secondary
Final Check
After completion of all relay functionality testing and relay setting check. 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 with the CT
connection are replaced in accordance with the relevant external connection or schemes
diagram. Ensure all fault & Annunciation contacts, trip contacts has been reset before
leaving relay.
If relay ADR241B is a newly installed or the CB has been just maintained the trip counter of
Relay should be zero. This counter can be reset by enabling Load Default Setting menu
.
Note: This will also clear all fault memory and the reset password.
Summary of Contents for ADR241B
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