ABB REF 54 Series Technical Reference Manual page 31

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Technical Reference Manual, General
The matching transformers and sensor inputs of the feeder terminal are designed so
as to allow either sensors or matching transformers to be used on the measuring
channels 2...5 and 7...10. Should a matching transformer be used on a channel, no
sensor is allowed to be used on the same channel or vice versa. On channel 1 only
sensors can be used and on channel 6 only a matching transformer.
X1.1
27
100V
25
24
100V
22
21
100V
19
18
100V
16
15
0,2A
14 1A
13
12
1A
11
5A
10
9
1A
8
5A
7
6
1A
5
5A
4
3
1A
2
5A
1
X2.1
DIFF
X2.2
DIFF
X2.3
DIFF
X2.4
DIFF
X2.5
DIFF
X2.6
DIFF
X2.7
DIFF
X2.8
DIFF
X2.9
DIFF
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Depending on whether sensors are included or not, REF 54_ feeder terminals have
9 (without sensors) or 10 (with sensors) physical analogue channels (see table
below). The number of channels used depends on the feeder terminal configuration
and the kind of matching transformers or sensor inputs used. Furthermore, the feeder
terminal includes virtual analogue channels (refer to section "Calculated analogue
channels" on page 36) for calculating the neutral current, phase-to-phase voltage
and residual voltage from phase currents and voltages.
Each analogue channel is separately configured with the Relay Confguration Tool.
Both the measuring unit for each analogue channel and the type of signal to be
measured are to be configured.
Ch 10, VT4
Ch 9, VT3
Ch 8, VT2
Ch 7, VT1
Ch 6, CT5
Ch 5, CT4
Ch 4, CT3
Ch 3, CT2
Ch 2, CT1
Ch 10, sensor
Ch 9, sensor
Ch 8, sensor
Ch 7, sensor
Ch 5, sensor
Ch 4, sensor
Ch 3, sensor
Ch 2, sensor
Ch 1, sensor
541osa9s
5() B
31