Analog Channel Configuration; Operation Principle - ABB RELION REX640 Technical Manual

1MRS759142 C
4.3.3.4
4.3.3.5
REX640
Technical Manual

Analog channel configuration

TR3PTDF has three analog group inputs which must be properly configured.
Table 590: Analog inputs
Input
I3P1
I3P2
1)
I3P3
1) Can be connected to GRPOFF if
See the preprocessing function blocks in this document for the
possible signal sources. The GRPOFF signal is available in the
function block called Protection.
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.

Operation principle

The function can be enabled and disabled with the Operation setting. The
corresponding parameter values are "on" and "off".
The operation of TR3PTDF can be described with a module diagram. All the modules
in the diagram are explained in the next sections.
Description
Three-phase currents
Three-phase currents
Three-phase currents
Necessary when
than "Not in use"
Current group 3 type is set to "Not in use"
Section 4
Protection functions
Current group 3 type is other
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