Name Values (Range) Unit Step Default Description
BCrv2 0.50 - 100.00 - 0.01 1.00 Parameter B for customer programmable
curve for step 2
CCrv2 0.0 - 1.0 - 0.1 0.0 Parameter C for customer programmable
curve for step 2
DCrv2 0.000 - 60.000 - 0.001 0.000 Parameter D for customer programmable
curve for step 2
PCrv2 0.000 - 3.000 - 0.001 1.000 Parameter P for customer programmable
curve for step 2
CrvSat2 0 - 100 % 1 0 Tuning param for prog. under voltage Inverse-
Time curve, step 2
Table 125: UV2PTUV (27) Non group settings (basic)
Name Values (Range) Unit Step Default Description
ConnType PhN DFT
PhPh RMS
PhN RMS
PhPh DFT
- - PhN DFT Group selector for connection type
3.8.2 Two step overvoltage protection OV2PTOV (59)
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Two step overvoltage protection OV2PTOV
SYMBOL-C-2U-SMALLER-THAN
V2 EN
59
3.8.2.1 Application
Two step overvoltage protection OV2PTOV (59) is applicable in all situations, where
reliable detection of high voltage is necessary. OV2PTOV (59) is used for supervision
and detection of abnormal conditions, which, in combination with other protection
functions, increase the security of a complete protection system.
High overvoltage conditions are caused by abnormal situations in the power system.
OV2PTOV (59) is applied to power system elements, such as generators, transformers,
motors and power lines in order to detect high voltage conditions. OV2PTOV (59) is
used in combination with low current signals, to identify a transmission line, open in
the remote end. In addition to that, OV2PTOV (59) is also used to initiate voltage
correction measures, like insertion of shunt reactors, to compensate for low load, and
1MRK504116-UUS C Section 3
IED application
515
Application manual
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