Micom P634 - Main Functions of the P634 (Function Group MAIN); Conditioning of the Measured Values

3.12 Main Functions of the P634 (Function Group MAIN)
3.12.1 Conditioning of the Measured Values
The secondary phase currents of the system transformers are fed to the P634.
Furthermore, there is the option of connecting a measuring voltage. The
measured values are – electrically isolated – converted to normalized electronics
levels. The analog quantities are digitized and are thus available for further
processing.
The P634 has the following measuring inputs:
●
Current inputs (three phases) for the processing of measured values for 4
winding ends of the transformer.
●
Current inputs for up to three neutral-point-to-ground connections (see
Fig. 3-39, (p. 3-64)) or, alternatively, for looping into ground connections
of the phase current transformers or for connection to a Holmgreen group.
●
One voltage input.
3 Operation P634
P634/EN M/R-42-A // P634‑311‑653 3-63