Function Block; Functionality; Analog Channel Configuration - ABB RELION REX640 Technical Manual

1MRS759142 C
4.5.10.2
4.5.10.3
4.5.10.4
REX640
Technical Manual

Function block

GUID-960385C8-204E-468B-BB95-5EDDFBF4ECA6 V1 EN
Figure 452: Function block

Functionality

The three-phase overvoltage variation protection function PHVPTOV monitors the
quality of the voltages. The function evaluates the power quality in the voltage by
calculating the average RMS value of the voltage over a set period. The function
includes a settable limit for the detection of overvoltage in a single phase, two phases
or three phases.
The function starts when the average RMS value of the voltage exceeds the set limit.
PHVPTOV operates with the definite time (DT) characteristics.
The function contains a blocking functionality. It is possible to block function outputs,
the definite timer or the function itself.

Analog channel configuration

PHVPTOV has one analog group input which must be properly configured.
Table 794: Analog inputs
Input
U3P
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 795: Special conditions
Condition
U3P connected to real measurements
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
Protection functions
Description
Three-phase voltages
Description
The function can work with one voltage channel
connected if Num of start phases is set to "1 out of
3". Otherwise, all three voltage channels must be
connected.
Section 4
831