Field Parameters
Field Parameters – Current Related
Parameter Description Setting range Default Menu path
CT pri Nominal current of the primary side of the
current transformers.
1 - 50000A 1000A [Field Para
/CT Ntrl]
CT sec Nominal current of the secondary side of the
current transformers.
1A,
5A
1A [Field Para
/CT Ntrl]
CT dir Protection functions with directional feature
can only work properly if the connection of
the current transformers is free of wiring
errors. If all current transformers are
connected to the device with an incorrect
polarity, the wiring error can be
compensated by this parameter. This
parameter turns the current vectors by 180
degrees.
0°,
180°
0° [Field Para
/CT Ntrl]
ECT pri This parameter defines the primary nominal
current of the connected earth current
transformer. If the earth current is
measured via the Holmgreen connection,
the primary value of the phase current
transformer must be entered here.
1 - 50000A 1000A [Field Para
/CT Ntrl]
ECT sec This parameter defines the secondary
nominal current of the connected earth
current transformer. If the earth current is
done via the Holmgreen connection, the
primary value of the phase current
transformer must be entered here.
1A,
5A
1A [Field Para
/CT Ntrl]
ECT dir Earth fault protection with directional
feature depends also on the correct wiring
of the earth current transformer. An
incorrect polarity/wiring can be corrected by
means of the settings "0°" or "180°". The
operator has the possibility of turning the
current vector by 180 degrees (change of
sign) without modification of the wiring. This
means, that - in terms of figures - the
determined current indicator was turned by
180° by the device.
0°,
180°
0° [Field Para
/CT Ntrl]
488 MCDGV4 DOK-HB-MCDGV4-2E
To Next Page
Loading...
