Siemens SIPROTEC 4 7UT6 Series Manual page 325

Input/Output Board A-I/O-3 (only 7UT612)
The rated current settings of the input current transformers are checked on the A–I/O–3 module.
[aio3-bruecken-7ut612-021004-rei, 1, en_GB]
Figure 3-8
With default settings, all jumpers (X61 bis X70) are set to the same rated current (according to the order
number of the device). However, rated currents can be changed for each individual input transformer.
To do so, you have to change the location of the jumpers next to the transformers. Additionally, settings of
the common jumpers X68 to X70 must be changed correspondingly. The following table shows the assign-
ment of the jumpers to the current measuring inputs.
•
For three-phase applications and single-phase transformers:
There are 3 measuring inputs for each side. The jumpers belonging to one side must be plugged to the
same rated current. Furthermore, the corresponding common jumper (X68 for side 1 and X69 for side 2)
has to be plugged to the same rated current.
For measuring input Ι7, the individual and the common jumper are plugged to the same rated current.
SIPROTEC 4, 7UT6x, Manual
C53000-G1176-C230-5, Edition 09.2016
Input/output module A–I/O-3 with representation of the jumper settings required for the
module configuration
Mounting and Commissioning
3.1 Mounting and Connections
325