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15
Numbering of
terminals
Terminal Contact
Function
group
interval
X0
1-2
Current I
L1
(5A). Overcurrent protection and measurement
1-3
Current I
L1
(1A). Overcurrent protection and measurement
4-5
Current I
L2
(5A). Overcurrent protection and measurement
4-6
Current I
L2
(1A). Overcurrent protection and measurement
7-8
Current I
L3
(5A). Overcurrent protection and measurement
7-9
Current I
L3
(1A). Overcurrent protection and measurement
13-14
Voltage U
12
(100 V). Measurement
13-15
Voltage U
12
(110 V). Measurement
16-17
Voltage U
23
(100 V). Measurement
16-18
Voltage U
23
(110 V). Measurement
19-20
Voltage U
31
(100 V). Measurement
19-21
Voltage U
31
(110 V). Measurement
25-26
Neutral current I
0
(5 A). Earth-fault protection
25-27
Neutral current I
0
(1 A). Earth-fault protection
28-29
Residual voltage U
0
(100 V). Earth-fault protection
28-30
Residual voltage U
0
(110 V). Earth-fault protection
X1
1-2
Auxiliary power supply. The positive pole of the dc supply is connected
to terminal 1
3-4
Operation signal (TRIP) of relay modules, stages I>, I>>, I
0
>, I
0
>>, I
ϕ
>, I
ϕ
>>
6-7
Signal "Final trip on overcurrent or earth-fault; I>, I>>, I
0
>, I
0
>>, I
ϕ
>,
I
ϕ
>>" or operation signal 2 (SIGNAL1)
8-9-10
Self-supervision signalling contact (IRF). Operates on the closed circuit
principle. Under normal conditions contact interval 8-9 is closed.
When the auxiliary power supply fails or an internal fault is detected,
the contact interval 9-10 is closed
11-12
Selection of operation characteristic, i.e. Isin
ϕ
/Icos
ϕ
for the directional
earth-fault module U2 (BACTRL)
X2
1-2-3
Signal "Final trip on earth-fault; I
ϕ
>, I
ϕ
>>" or signal "general protection
operation; I>, I>>, I
0
>, I
0
>>, I
ϕ
>, I
ϕ
>>" (SIGNAL 2)
4-5-6
Start or operation signal (I>, I>>, I
0
>, I
0
>>) from overcurrent and earth-
fault relay module (SIGNAL 3)
7-8-9
Start signal (I
ϕ
> ) from earth-fault relay module (SIGNAL 4)
10-11
External blocking signal 2 for protection relay modules (BS2)
11-12
External blocking signal 1 for protection relay modules (BS1)
X3
1-2
Input channel 1 of control module, open status (INPUT1/O). When e.g.
the circuit-breaker is open, voltage must be applied to the input
1-3
Input channel 1 of control module, closed status (INPUT1/I). When
e.g. the circuit-breaker is closed, voltage must be applied to the input
1-4
Input channel 2 of control module, open status (INPUT2/O)
1-5
Input channel 2 of control module, closed status (INPUT2/I)
6-7
Input channel 8 of control module (INPUT 8)
6-8
Input channel 9 of control module (INPUT 9)
9-10
Input channel 12 of control module (INPUT 12)
11-12
Open output 1 of control module (OPEN 1)
13-14
Close output 1 of control module (CLOSE 1)
15-16
Open output 2 of control module (OPEN 2)
17-18
Close output 2 of control module (CLOSE 2)