3.1 Mounting and Connections
363
7UT613/63x Manual
C53000-G1176-C160-2
The rated currents of the measured voltage inputs can be set for each input trans-
former by jumpers on the PCB. With default settings all jumpers are set to the same
rated current (according to the order number of the device).
• For 3-phase applications
and 1-phase transformers:
There are 3 measuring inputs for each of the three-phase measuring locations M3
and M4: I
L1M3
, I
L2M3
, I
L3M3
, I
L1M4
, I
L2M4
, I
L3M4
.
The jumpers belonging to measuring location M3 (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 M4 (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 auxiliary current input I
Z2
can be used for a fifth 3-phase measuring location
M5. In this case set the jumpers X64 and X83 both to the required rated secondary
current for M5: „1A“ or „5A“.
• For 1-phase
busbar protection:
There are 6 measuring inputs for 6 different measuring locations, i.e. the feeders 7
to 12: I
7
, I
8
, I
9
, I
10
, I
11
, I
12
. Each input can be set individually to „1A“ or „5A“ or „0.1A“
(X61, X62, X63, X65, X66, X67).
Only if measuring inputs I
7
to I
9
have the same rated current, will the common
jumper X82 be plugged to this current
Only if measuring inputs I
10
to I
12
have the same rated current, will the common
jumper X81 be plugged to this current.
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 measur-
ing inputs, including the common jumpers, are plugged to „0.1A“.
• For the single-phase auxiliary measuring input
I
Z2
:
Jumper X64 and X83 are both set to the required rated secondary current for this
single-phase current input: „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 single-phase auxiliary measuring input
I
X4
:
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“ single-phase current input, jumper X68 is
irrelevant. Set X84 to„1.6A“. Set X85 and X86 both to position 2-3.
Table 3-18 gives a summary of the jumpers for the rated currents on C–I/O-9.
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