Eaton EMR-4000 Installation, Operation And Maintenance Manual page 578

Setting Group Parameters of the Current Unbalance Module
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".
Blo TripCmd Permanent blocking of the Trip Command of the
module/element.
ExBlo TripCmd 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 TripCmd Fc=active".
Threshold The Threshold setting defines a minimum operating
current magnitude of I2 for the 46 function to operate,
which ensures that the relay has a solid basis for
initiating a current unbalance trip. This is a supervisory
function and not a trip level.
Only available if: Device Planning: 51Q.Mode = 46
%(I2/I1) The %(I2/I1) setting is the unbalance trip pickup setting. It
is defined by the ratio of negative sequence current to
positive sequence current (% Unbalance=I2/I1). Phase
sequence will be taken into account automatically.
Only available if: %(I2/I1) = Use
t Tripping delay
Only available if: Characteristic = DEFT
EMR-4000
Setting range
Active
Inactive,
Active
Inactive,
Active
Inactive,
Active
0.01 - 4.00In
2 - 40%
0.00 - 300.00s
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IM02602009E
Default Menu path
Inactive [Protection Para
/<1..4>
/Unbalance-Prot
/46[1]]
Inactive [Protection Para
/<1..4>
/Unbalance-Prot
/46[1]]
46[1]: Inactive [Protection Para
46[2]: Active /<1..4>
/Unbalance-Prot
/46[1]]
Inactive [Protection Para
/<1..4>
/Unbalance-Prot
/46[1]]
0.3In [Protection Para
/<1..4>
/Unbalance-Prot
/46[1]]
46[1]: 40% [Protection Para
46[2]: 20% /<1..4>
/Unbalance-Prot
/46[1]]
46[1]: 2s [Protection Para
46[2]: 10s /<1..4>
/Unbalance-Prot
/46[1]]
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