Eaton EDR 3000 Installation, Operation And Maintenance Manual page 585

Setting Group Parameters of the Current Transformer Supervision
Parameter Description
Function Permanent activation or deactivation of module/element. Inactive,
ExBlo Fc Activate (allow) or inactivate (disallow) blocking of the
module/element. This parameter is only effective if a
signal is assigned to the corresponding global protection
parameter. If the signal becomes true, those
modules/elements are blocked that are parameterized
"ExBlo Fc=active".
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 ground current
and the calculated value I0 is higher than the pick up
value ΔI, an pickup 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.
Pickup delay Pickup delay
Kd Dynamic correction factor for the evaluation of the
difference between calculated and measured ground
current. This correction factor allows transformer faults,
caused by higher currents, to be compensated.
EDR-3000
Setting range
Active
Inactive,
Active
0.10 - 1.00In
0.1 - 9999.0s
0.00 - 0.99
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IM02602003E
Default Menu path
Inactive [Protection Para
/<1..4>
/Supervision
/CTS]
Inactive [Protection Para
/<1..4>
/Supervision
/CTS]
0.50In [Protection Para
/<1..4>
/Supervision
/CTS]
1.0s [Protection Para
/<1..4>
/Supervision
/CTS]
0.00 [Protection Para
/<1..4>
/Supervision
/CTS]
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