Doc ID : ADR111A_IM_01
Ref ID : ADR111A/IM/TC
Rev No. : 04
Page No. : 124 of 127
ADR111A /
ADR211A
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).
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:
•
Ensure over current trip setting.
•
Ensure TMS setting of over current function is entered correctly as per required time
grading.
•
Ensure instantaneous HF setting done correctly and its definite time delay is applied
properly as per required time grading.
•
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
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 & trip contacts have been reset before leaving relay.
If relay ADR111A/ ADR211A 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 loading Default Setting
.
Note: This will also clear all fault memory and the set password.
Post instillation / Commissioning observation
After successful installation confirm amount of existing load current. This can be confirmed
with Analogue/ Digital current meter available on panel with relay primary and secondary
current measurement window. In normal balanced load condition, the i.e. current should be
very low.
Summary of Contents for ADR111A
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