Woodward HighPROtec MCDLV4, Manual

Page: 1077 / 1275

Supervision
Setting Group Parameters of the Current Transformer Supervision
Parameter Description Setting range Default Menu path
Function Permanent activation or deactivation of
module/stage.
inactive,
active
inactive [Protection
Para
/<1..4>
/Supervision
/CTS]
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
/<1..4>
/Supervision
/CTS]
ΔI In order to prevent faulty tripping of phase
selective protection functions that use the
current as tripping criterion. If the difference
of the measured earth current and the
calculated value I0 is higher than the pick
up value ΔI, an alarm event is generated
after expiring of the excitation time. In such
a case, a fuse failure, a broken wire or a
faulty measuring circuit can be assumed.
0.10 - 1.00In 0.50In [Protection
Para
/<1..4>
/Supervision
/CTS]
Alarm delay Alarm delay 0.0 - 9999.0s 1.0s [Protection
Para
/<1..4>
/Supervision
/CTS]
Kd Dynamic correction factor for the evaluation
of the difference between calculated and
measured earth current. This correction
factor allows transformer faults, caused by
higher currents, to be compensated.
0.00 - 0.99 0.00 [Protection
Para
/<1..4>
/Supervision
/CTS]
1077 MCDLV4 DOK-HB-MCDLV4-2E