Instantaneous Current Curves (Ground Current Measured) - Eaton EDR 3000 Installation, Operation And Maintenance Manual

Instantaneous Current Curves (Ground Current Measured)

The following characteristics is available:
DEFT (definite time).
Explanation:
t = Tripping delay
IX = Fault current
Pickup = If the pickup value is exceeded, the module /element starts to time out to trip .
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.
EDR-3000
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IM02602003E
690