Two Step Overvoltage Protection Ov2Ptov (59) - ABB RET670 Applications Manual

1MRK504116-UUS C
Name Values (Range)
BCrv2 0.50 - 100.00
CCrv2 0.0 - 1.0
DCrv2 0.000 - 60.000
PCrv2 0.000 - 3.000
CrvSat2 0 - 100
Table 125: UV2PTUV (27) Non group settings (basic)
Name Values (Range)
ConnType PhN DFT
PhPh RMS
PhN RMS
PhPh DFT
3.8.2
3.8.2.1
Application manual
Unit Step
- 0.01
- 0.1
- 0.001
- 0.001
% 1
Unit Step
- -

Two step overvoltage protection OV2PTOV (59)

Function description
Two step overvoltage protection
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
Default Description
1.00 Parameter B for customer programmable
curve for step 2
0.0 Parameter C for customer programmable
curve for step 2
0.000 Parameter D for customer programmable
curve for step 2
1.000 Parameter P for customer programmable
curve for step 2
0 Tuning param for prog. under voltage Inverse-
Time curve, step 2
Default Description
PhN DFT Group selector for connection type
IEC 61850 IEC 60617
identification identification
OV2PTOV
SYMBOL-C-2U-SMALLER-THAN
V2 EN
Section 3
IED application
ANSI/IEEE C37.2
device number
59
3U>
515