7.5.4 Analog channel configuration
DGMGAPC has two analog group inputs which must be properly configured.
Table 1341: 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 1342: Special conditions
Condition Description
U3P connected real meas-
urements
The function can work with any two voltage channels connec-
ted but it is recommended to connect all three voltage chan-
nels.
Improper analog channel configuration causes a validation error if the analog
channels are not completely configured or they do not match with certain settings.
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.
7.5.5 Operation principle
The
Operation
setting is used to enable or disable the function. When selected "on"
the function is enabled and respectively "off" means function is disabled.
The operation of DGMGAPC can be described by using a module diagram (see
Figure 796
). All the modules in the diagram are explained in the next sections.
1MRS759142 F
Condition monitoring functions
REX640
Technical Manual
1405
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