Woodward SEG HighPROTEC MRA4, Device Manual

Page: 470 / 510

VTS-Supervision Module - Voltage Transformer Supervision [ANSI 60FL]
Setting Group Parameters of the Voltage Transformer Module
Parameter Description Setting range Default Menu path
Function Permanent activation
or deactivation of
module/stage.
inactive,
active
inactive [Protection Para
/<n>
/Supervision
/VTS]
ExBlo Fc Activate (allow) or
inactivate (disallow)
blocking of the
module/stage. This
parameter is only
effective if a signal is
assigned to the
corresponding global
protection
parameter. If the
signal becomes true,
those
modules/stages are
blocked that are
parameterized
"ExBlo Fc=active".
inactive,
active
inactive [Protection Para
/<n>
/Supervision
/VTS]
ΔV In order to prevent
faulty tripping of
phase selective
protection functions
that use the voltage
as tripping criterion.
If the difference of
the residual voltage
and the calculated
value V0 is higher
than the pick up
value ΔV, an alarm
event effected after
the excitation time.
In such a case, the
existence of a fuse
failure, a broken wire
or a faulty measuring
circuit can be
assumed.
0.20 - 1.00Vn 0.50Vn [Protection Para
/<n>
/Supervision
/VTS]
Alarm delay Alarm delay 0.1 - 9999.0s 1.0s [Protection Para
/<n>
/Supervision
/VTS]
Page 470 EN MRA4 04/09