Eaton EDR 3000 User Manual

EDR-3000 IM02602003E
51X INV Measured Ground Fault Protection
Elements
51X[1] ,51X[2]
All ground current elements are identically structured.
For each element 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;
•IT;
•I2T; and
•I4T.
For tripping curves please refer to the “Appendix/Time Current Curves (Ground Current)” section.
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. However, this is only possible
if the current transformers are Wye-connected.
www.eaton.com 431

Eaton EDR 3000 Specifications

General

Brand	Eaton
Model	EDR 3000
Category	Relays
Language	English