janitza UMG 96 RM-EL, Operating Instructions And Technical Data

Page: 23 / 92

23
UMG 96RM-EL
Direction of the current
The current direction can be individually corrected
on the device or via the serial interfaces for each phase.
In the case of incorrect connection, the current trans-
former does not need to be subsequently reconnected.
c
Current transformer connections!
The secondary connection of the current
transformer must be short-circuited on this
before the current feed to the UMG 96RM-
EL is disconnected!
If a test switch, which automatically short-
circuits the secondary wires of the current
transformer, is available then it is sufficient
to set this to the „Test“ position insofar as
the short-circuiting device has been che-
cked beforehand.
c
Open-circuit current transformers!
High voltage spikes that are dangerous
to touch can occur on current transformers
that are driven with open-circuit secondary
windings!
With “safe open-circuit current transform-
ers” the winding insulation is rated such
that the current transformer can be driven
open. However, even these current trans-
formers are dangerous to touch when they
are driven open-circuit.
c
Earthing of current transformers!
If a connection is provided for the earthing
of secondary windings then this must be
connected to the earth.