Alstom MiCOM P846, Technical Manual

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P846/EN TS/D Troubleshooting
(TS) 12-6
MiCOM P846
TS
5. OUT OF SERVICE LED ILLUMINATED ON POWER UP
Test Check Action
1
Using the relay menu confirm
whether the Commission Test/Test
Mode setting is Enabled.
Otherwise proceed to test 2. If the setting is Enabled then disable the test
mode and, verify that the Out of Service LED
is
extinguished.
2
Select and view the last
maintenance record from the menu
(in the View Records). Check for H/W Verify Fail this indicates a
discrepancy between the relay model
number and the hardware; examine the
“Maint. Data”, this indicates the causes of the
failure using bit fields:
Bit Meaning
0 The application type field in the
model number does not match
the software ID
1 The application field in the model
number does not match the software
ID
2 The variant 1 field in the model
number does not match the software
ID
3 The variant 2 field in the model
number does not match the software
ID
4 The protocol field in the model
number does not match the software
ID
5 The language field in the model
number does not match the software
ID
6 The VT type field in the model
number is incorrect (110V VTs fitted)
7 The VT type field in the model
number is incorrect (440V VTs fitted)
8 The VT type field in the model
number is incorrect (no VTs fitted)
Table 4: Out of service LED illuminated