6.6
SEL-700G Relay
Instruction Manual
Date Code 20170814
Settings
Setting Entry Error Messages
Setting Entry Error Messages
As you enter relay settings, the relay checks the setting entered against the
range for the setting as published on the relay setting sheet. If any setting
entered falls outside the corresponding range for that setting, the relay
immediately responds
Out of Range
and prompts you to reenter the setting.
In addition to the immediate range check, several of the settings have
interdependency checks with other settings. The relay checks setting
interdependencies after you answer
Y
to the
Saves Settings?
prompt, but
before the settings are stored. If any of these checks fail, the relay issues a
self-explanatory error message and returns you to the settings list for a
correction. Table 6.6 shows the settings interdependency error messages that
require some additional explanation and guidance.
Table 6.6
Setting Interdependency Error Messages
Error Messages
Setting/Function
Correct the Condition
CTRm, TAPm setting
combination out of
range (m = X or Y)
Group settings, differen-
tial element autocalcula-
tion of TAPX and TAPY
Check:
0.1 * ImNOM < TAPm <6.2 *
ImNOM (ImNOM = 5 or 1 for 5 A
and 1 A phase CT based on
PARTNO).
Should either TAPm value violate
this requirement, adjust the affected
TAPm and /or CTRm to satisfy the
check. (m = X or Y).
Maximum to mini-
mum per unit tap-
ratio must be
< or = 7.5
Group settings, Differen-
tial Element autocalcula-
tion of TAPX and TAPY
Check:
[ MAX (TAPX / IXNOM, TAPY /
IYNOM) / MIN (TAPX / IXNOM,
TAPY / IYNOM) ] < or = 7.5.
Adjust TAPX or TAPY setting until
the check is satisfied.
Содержание SEL-700G Series
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