Eaton EMR-4000 Installation, Operation And Maintenance Manual page 620

Parameter Set Parameters of the Voltage 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 defines a minimum operating voltage
magnitude of either V1 or V2 for the 47 function to
operate, which ensures that the relay has a solid basis
for initiating a voltage unbalance trip. This is a
supervisory function and not a trip level. The meaning of
Vn: Phase to Phase: Vn = Main VT sec. Phase to
Ground: Vn = Main VT / SQRT(3).
Only available if: Device Planning: 47.Mode = Threshold
%(V2/V1) The %(V2/V1) setting is the unbalance trip pickup setting.
It is defined by the ratio of negative sequence voltage to
positive sequence voltage (% Unbalance=V2/V1). Phase
sequence will be taken into account automatically.
Only available if: %(V2/V1) = Use
t Tripping delay
EMR-4000
Setting range
Active
Inactive,
Active
Inactive,
Active
Inactive,
Active
0.01 - 1.30Vn
2 - 40%
0.00 - 300.00s
www.eaton.com
IM02602009E
Default Menu path
Inactive [Protection Para
/<1..4>
/Unbalance-Prot
/47[1]]
Inactive [Protection Para
/<1..4>
/Unbalance-Prot
/47[1]]
47[1]: Inactive [Protection Para
47[2]: Active /<1..4>
/Unbalance-Prot
/47[1]]
Inactive [Protection Para
/<1..4>
/Unbalance-Prot
/47[1]]
0.2Vn [Protection Para
/<1..4>
/Unbalance-Prot
/47[1]]
47[1]: 40% [Protection Para
47[2]: 20% /<1..4>
/Unbalance-Prot
/47[1]]
47[1]: 10.0s [Protection Para
47[2]: 20s /<1..4>
/Unbalance-Prot
/47[1]]
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