any characteristic by setting the operate time for six different figures of overexcitation in
the range from 100% to 180% of rated V/Hz.
When configured to a single phase-to-phase voltage input, a corresponding phase-to-
phase current is calculated which has the same phase angle relative the phase-to-phase
voltage as the phase currents have relative the phase voltages in a symmetrical system.
The function should preferably be configured to use a three-phase voltage input if
available. It then uses the positive sequence quantities of voltages and currents.
Analog measurements shall not be taken from any winding where a load
tap changer is located.
Some different connection alternatives are shown in figure 291.
G
24
en05000208_ansi.vsd
24
24
ANSI05000208 V1 EN
Figure 291: Alternative connections of an Overexcitation protection OEXPVPH (24)
(Volt/Hertz)
10.4.3 Setting guidelines
10.4.3.1 Recommendations for input and output signals
Recommendations for Input signals
Please see the default factory configuration.
Section 10 1MRK 506 369-UUS -
Voltage protection
582 Line distance protection REL670 2.2 ANSI
Application manual
To Next Page
Loading...
