Siemens SIPROTEC 4 7UT6 Series Manual page 333

The rated currents of the measured current inputs can be determined for each analog input. With default
settings all jumpers are set to the same rated current (according to the order number of the device).
The measuring inputs available depend on the intended use and the device variant. For the above slots, the
following applies to all devices:
•
For 3-phase applications and 1-phase transformers:
There are 3 measuring inputs for each of the three-phase measuring locations M1 and M2: Ι
, Ι
Ι
L3M1 L1M2
The jumpers belonging to measuring location M1 (X61, X62, X63) must all be plugged to the rated
secondary current of the connected current transformers: "1A" or "5A"). Furthermore, the corresponding
common jumper (X82) has to be plugged to the same rated current.
The jumpers belonging to measuring location M2 (X65, X66, X67) must all be plugged to the rated
secondary current of the connected current transformers: "1A" or "5A"). Furthermore, the corresponding
common jumper (X81) has to be plugged to the same rated current.
•
For 3-phase applications in 7UT635:
The single-phase auxiliary current inputs Ι
tion M5. In this case set the jumpers X64, X68, X83 and X84 all to the required secondary rated current
for M5: "1A" or "5A".
Set X85 and X86 to position 1-2.
•
For 1-phase busbar protection:
There are 6 measuring inputs for 6 different measuring locations, i.e. the feeders 1 to 6: Ι
Each input can be set individually (X61, X62, X63, X65, X66, X67):"1A" or "5A" or "0.1A".
Only if the measuring inputs Ι
Only if the measuring inputs Ι
If different rated currents reign within the input groups, will the corresponding jumper be plugged to
"undef".
For interposed summation transformers with 100 mA output, jumpers of all measuring inputs, including
the common jumpers, are plugged to "0.1A".
•
For the 1-phase auxiliary measuring input Ι
Jumpers X64 and X83 are both set to the required rated current in accordance with the connected
current transformer: "1A" or "5A".
But: If in 7UT635 this input is used for a fifth three-phase measuring location M5, the jumpers must be
set (as mentioned above) to the secondary rated current of that measuring location.
•
For the 1-phase auxiliary measuring input Ι
If this input is used as a "normal" 1-phase current input, set jumpers X68 and X84 both to the required
rated secondary current: "1A" or "5A". Set X85 and X86 both to position 1-2.
If this input is used as a "high-sensitivity" current input, jumper X68 is irrelevant. Set X84 to "1.6A". Set
X85 and X86 both to position 2-3.
But: If in 7UT635 this input is used for a fifth 3-phase measuring location M5, set the jumpers to this
rated secondary current (see above). X85 and X86 must then be set to position 1-2.
The following table gives a summary of the jumpers for the rated currents on C–I/O-9.
Table 3-20
3-phase
Ι
L1M1
Ι
L2M1
Ι
L3M1
SIPROTEC 4, 7UT6x, Manual
C53000-G1176-C230-5, Edition 09.2016
, Ι , Ι .
L2M2 L3M2
to Ι have the same rated current is X81 plugged to this rated current.
1 3
to Ι have the same rated current is X82 plugged to this rated current.
4 6
Assignment of the jumpers for the Rated currents to the measured current inputs
Application
1-phase
Ι1
Ι2
Ι3
and Ι can be used for the fifth three-phase measuring loca-
Z1 Z3
:
Z1
:
Z3
Jumpers
individual
X61
X62
X63
Mounting and Commissioning
3.1 Mounting and Connections
, Ι
L1M1 L2M1
, Ι , Ι , Ι , Ι
1 2 3 4 5
common
X82
,
, Ι .
6
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