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TD_MRI1_06.05_GB 7
3.2 Relay output contacts
Figure 3.6
Contacts at
MRI1 :
To prevent that the C.B. trip coil circuit is interrupted
by the
MRI1 first, i.e. before interruption by the C.B.
auxiliary contact, a dwell time is fixed.
This setting ensures that the
MRI1 remains in self hold-
ing for 200ms after the fault current is interrupted.