Eaton EDR 3000 User Manual

EDR-3000 IM02602003E
Time Current Curves (Ground Current)
The following characteristics are available:
NINV (IEC/XInv);
VINV (IEC/XInv);
LINV (IEC/XInv);
EINV (IEC/XInv);
MINV (ANSI/XInv);
VINV (ANSI/XInv);
EINV (ANSI/XInv);
Thermal Flat;
Therm Flat IT;
Therm Flat I2T; and
Therm Flat I4T.
Explanation:
The ground current can be measured either directly via a zero sequence transformer or detected by a residual
connection. The ground current can alternatively be calculated from the phase currents; but this is only possible if the
current transformers are Wye-connected.
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t = Tripping delay
t-multiplier = Time multiplier/tripping characteristic factor. The setting range
depends on the selected tripping curve.
IG = Fault current
Pickup = If the pickup value is exceeded, the module/element starts to time out to trip .

Eaton EDR 3000 Specifications

General

Brand	Eaton
Model	EDR 3000
Category	Relays
Language	English