6.5.4 Analog channel configuration
SEQSPVC has two analog group inputs which all must be properly configured.
Table 1273: Analog inputs
Input Description
I3P Three-phase currents
U3P Three-phase voltages
See the preprocessing function blocks in this document for the possible
signal sources.
There are a few special conditions which must be noted with the configuration.
Table 1274: Special conditions
Condition Description
U3P connected to real measurements The function can work with any two voltage
channels connected but it is recommended
to connect all three voltage channels.
Improper analog channel configuration causes a validation error if the analog
channels are not completely configured or they do not match with certain settings.
For troubleshooting, check the contents of this chapter and also the preprocessing
blocks in this document. The configuration can be written to the protection relay
once the mismatch is corrected.
6.5.5 Operation principle
The function can be enabled and disabled with the
Operation
setting. The
corresponding parameter values are "On" and "Off".
The operation of SEQSPVC can be described with a module diagram. All the
modules in the diagram are explained in the next sections.
Supervision functions
1MRS759142 F
1332 REX640
Technical Manual
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