ABB RELION REX640 Technical Manual page 897

1MRS759142 F
Figure 501: Operating curve of "OvExt IDMT Crv4" based on the specified
settings. The two dots marked on the curve are referred to in the text.
If the excitation level stays at 1.25, the operation occurs after 15.20 s. At the
excitation level of 1.42, the time to operation would be 5.90 s as per the two
dots in
does not limit the maximum operate time because the operate time at
value = 110% (1.1 pu) is approximately 75 s.
4.5.7.8 Signals
OEPVPH Input signals
Table 844: OEPVPH Input signals
Name
I3P
U3P
BLOCK
REX640
Technical Manual
Figure 501
. In this case, the setting
Type
SIGNAL
SIGNAL
BOOLEAN
Protection functions
Maximum operate time 3600 s
Default Description
- Three-phase currents
- Three-phase voltages
0=False Block signal
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