ABB REB670 - Two Step Residual Overvoltage Protection ROV2 PTOV (59 N); Identification

ResetTypeCrvn: This parameter for inverse time characteristic can be set:
Instantaneous, Frozen time
, Linearly decreased. The default setting is Instantaneous.
tIResetn: Reset time for step n if inverse time delay is used, given in s. The default
value is 25 ms.
TDn: Time multiplier for inverse time characteristic. This parameter is used for co-
ordination between different inverse time delayed undervoltage protections.
ACrvn, BCrvn, CCrvn, DCrvn, PCrvn: Parameters to set to create programmable under
voltage inverse time characteristic. Description of this can be found in the technical
reference manual.
CrvSatn: When the denominator in the expression of the programmable curve is equal
to zero the time delay will be infinity. There will be an undesired discontinuity.
Therefore a tuning parameter CrvSatn is set to compensate for this phenomenon. In the
voltage interval Pickup> up to Pickup> · (1.0 + CrvSatn/100) the used voltage will be:
Pickup> · (1.0 + CrvSatn/100). If the programmable curve is used, this parameter must
be calculated so that:
0
100
CrvSatn
B C× - >
EQUATION1448 V1 EN-US (Equation 71)
HystAbsn: Absolute hysteresis set in % of VBase. The setting of this parameter is
highly dependent of the application. If the function is used as control for automatic
switching of reactive compensation devices the hysteresis must be set smaller than the
voltage change after switching of the compensation device.
8.3 Two step residual overvoltage protection ROV2PTOV
(59N)
IP14546-1 v4
8.3.1
Identification
SEMOD54295-2 v6
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Two step residual overvoltage
protection
ROV2PTOV
2(U0>)
IEC15000108 V1 EN-US
59N
Section 8 1MRK 505 370-UUS A
Voltage protection
250 Busbar protection REB670 2.2 ANSI
Application manual