1 2 3 4 A - SIPROTEC

SIPROTEC, 7UT6x, Manual
C53000-G1176-C230-2, Release date 06.2012
Mounting and Commissioning
3.1 Mounting and Connections
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 assignment 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 I7, the individual and the common jumper are plugged to the same rated current.
• For single-phase busbar protection:
Each input can be set individually. Only if measuring inputs I 1 toI 3 have the same rated current, X68 is
plugged to the same rated current. Only if measuring inputs I 4 toI 6 have the same rated current, X69 is
plugged to the same rated current.
If different rated currents are reigning within the input groups, the corresponding common jumper is plugged
to „undef“.
For interposed summation transformers with 100 mA output, jumpers of all measuring inputs, including the
common jumpers, are plugged to 0.1 A.
Table 3-11 Assignment of jumpers for the rated current to the measuring inputs
Application Jumpers
3-phase 1-phase Individual Common
I L1S1 I 1 X61
I L2S1 I 2 X62
I L3S1 I 3 X63
I L1S2 I 4 X65
I L2S2 I 5 X66
I L3S2 I 6 X67
I X1 I 7 X64 X70
I X3 I 8 – –
X68
X69
377