[beispiel-leistungvonr-150502-kn, 1, en_GB]
Hardware Modifications
General
A subsequent adaptation of hardware to the power system conditions can be necessary for example with
regard to the control voltage for binary inputs or termination of bus-capable interfaces. Follow the procedure
described in this section, whenever hardware modifications are carried out.
Auxiliary Voltage
There are different ranges of input voltage for the auxiliary voltage
A Ordering Information and Accessories
The power supplies of the variants for DC 60 V/110 V/125 V and DC 110 V/125 V/220 V/250 V and AC 115 V
are largely interchangeable by modifying the position of the jumpers. The assignment of these jumpers to the
nominal voltage ranges and their spatial arrangement on the PCB are described further below at “Processor
Board C-CPU-2” Location and ratings of the miniature fuse and the buffer battery are also shown. When the
device is delivered, these jumpers are set according to the name-plate sticker. Generally, they do not need to
be altered.
Life contact
The life contact of the device is a changeover contact from which either the NC contact or the NO contact can
be connected to the device terminals via a plug-in jumper (X40). Assignments of the jumpers to the contact
type and the spatial layout of the jumpers are described in the following Section at margin heading “Processor
Board C-CPU-2”.
Rated Currents
The input transformers of the device are set to a nominal current of 1 A or 5 A with jumpers. The position of
the jumpers are set according to the name-plate sticker. The assignments of the jumpers to the nominal
current and the spatial layout of the jumpers are described in the following section “Board C-I/O-2” or “Board C-
I/O-11”. All jumpers must be set for one nominal current, i.e. one jumper (X61 to X64) for each input trans-
former and additionally the common jumper X60.
i
i
NOTE
If in exceptional cases the current ratings are changed, you have to inform the device of these changes by
entering the new values in address 206
CT SECONDARY
in the Power System Data.
Control Voltage for Binary Inputs
When the device is delivered the binary inputs are set to operate with a voltage that corresponds to the
nominal voltage of the power supply. If the nominal values differ from the power system control voltage, it
may be necessary to change the switching threshold of the binary inputs.
A jumper position is changed to adjust the pickup voltage of a binary input. The assignment of the jumpers to
the binary inputs and the spatial layout of the jumpers is described in the following sections at “Processor
Board C-CPU-2”, “Board C-I/O-4” and “Board C-I/O-11”.
i
i
NOTE
If binary inputs are used for trip circuit supervision, please note that two binary inputs (or a binary input
and a bypass resistance) are connected in series. The switching threshold must lie clearly below half the
nominal control voltage.
3.1.2
3.1.2.1
Mounting and Commissioning
3.1 Mounting and Connections
182
SIPROTEC 4, 7VK61, Manual
C53000-G1176-C159-5, Edition 05.2018
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