Functions
2.24 Protection for Single-phase Voltage Transformer Connection
SIPROTEC, 7SJ62/64, Manual
C53000-G1140-C207-2, Release date 01.2008
375
Figure 2-142 Connection example of a single-phase voltage transformer for 7SJ64
(phase-to-ground voltages)
If the phases of voltages V1 and V2 differ, phase displacement may be adjusted in address 6122 ANGLE
ADJUSTM..
(Sensitive) Ground Fault Detection (64, 50Ns, 67Ns)
The directional functionality and the displacement voltage element of this function cannot be applied since there
is no displacement voltage. Current elements of this function, however, can be operated in non-directional
mode
Except for the above-mentioned restriction the functional logic, scope of settings and information are described
in Section 2.12.
Fault Locator
If the device is connected to only one voltage transformer, this function is set to inactive and hidden.
Monitoring Functions
Voltage-measuring monitoring functions such as "Voltage symmetry" and "Fuse-Failure-Monitor" cannot be ap-
plied. They are set inactive and are hidden.
Operational Measured Values
Several operational measured values cannot be calculated. If whole groups of operational measured values
are concerned, they will be hidden. If only parts of a group are concerned, corresponding operational measured
values are set invalid (values are replaced by dashes) or reset.
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