Manual 7SJ45
Construction
C53000-K1174-C001-7
48
there is a dead time of 500 ms. The time can be prolonged for
extremely low fault currents.
•
Versions with relay output
These devices can be fitted in conventional types of switch-
gear. The auxiliary trip transformer in the current transformer
circuit or another power source can be used as power supply
source for the trip coil (see Figure 2-24 to Figure 2-26 and see
ordering data and accessories in chapter 2.11).
In case there is a fault tripping will be carried out for at least
500 ms. When a switching operation is carried out the trip
command remains in a waiting state until the circuit-breaker
trips.
Housing
The device is available for
•
Panel flush mounting and
•
Standard rail mounting
The housings of the 7SJ45 devices are dimensioned to fit into
most existing panel cutouts.
In the condensation-proof version, the module inside the device
is sealed with protective lacquer, so that the device can be used
even in very rough and extremely humid environmental
conditions.
Front view
Figure 2-1
Device front with indication and control elements
7SJ45
ERROR
ENTER
RUN
SIPROTEC
7SJ4
-
123456
ON
60 Hz
50 Hz
FREQ.
IE
I>>
MODE
N INV
V INV
E INV
IEC 51
DT O/C
50/51
123456
123456
123456
ON
123456
ON
ON
ON
1.6
0.8
0.4
0.2
0.1
0.05
3.2
1.6
0.8
0.4
0.2
0.1
TI>
MIN 0
MAX 6.3
TIp
MIN 0.05
MAX 3.15
*
: PULSE OUTPUT/CONTACT OUTPUT
[s]
3.2
1.6
0.8
0.4
0.2
0.1
3.2
1.6
0.8
0.4
0.2
0.1
I>
MIN 0.8/1.3
MAX 6.2/
*
Ip
MIN 0.8/1.3
MAX 4/
*
[I/I ]
N
0.8
0.4
0.2
0.1
0.05
0.025
TI>>
MIN 0
MAX 1.575
[s]
0.8
0.4
0.2
0.1
0.05
0.025
TI>>
MIN 0
MAX 1.575
16
8
4
2
1
0.5
I>>
MIN 2
MAX 20/
[I/I ]
N
16
8
4
2
1
0.5
I>>
MIN 2
MAX 20/
.
.
.
.
TRIP
8
8
8
8
SW1
SW2
SW3
SW4
SW5
2
3
4
1
