4.3.2.4 Operation principle
The function can be enabled and disabled with the
Operation
setting. The
corresponding parameter values are "On" and "Off".
The operation of TR2PTDF can be described by using a module diagram. All the
modules in the diagram are explained in the next sections.
Figure 267: Functional module diagram
Differential calculation
TR2PTDF operates phase-wise on a difference of incoming and outgoing currents.
The positive direction of the currents is towards the protected object.
Protection functions
1MRS757644 H
520 620 series
Technical Manual
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