Siemens Sivacon S8 Planning Information

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SIVACON S8 Planning Principles – In-line design, plug-in
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5.1 In-line switch-disconnectors
3NJ62 with fuses
In-line switch-disconnectors 3NJ62 with fuses
(Fig. 5/2) provide single as well as double breaking as a
standard feature.
Rating data of the vertical 3NJ62 distribution busbar
The vertical distribution busbars with the phase conductors
L1, L2, L3 are arranged at the back of the cubicle. The PE, N
or PEN busbars are arranged in the cable connection com-
partment. In the case of 4-pole feeders, the N conductor is
allocated to the phase conductors L1, L2, L3 at the back of
the cubicle.
The vertical distribution busbar is covered test finger
proofed (IP2X). The rated data are stated in Tab. 5/2.
Rating data of the 3NJ62 cable feeders
Apart from the space requirements for additional built-in
elements (Tab. 5/3), the derating factor stated in Tab. 5/4 is
to be set for determining the permissible operating current
of a fuse link. The space requirements for the cable feeders
of the different in-line units depend on the nominal device
current (Tab. 5/5).
Distribution busbar cross section 60 x 10 mm
2
80 x 10 mm
2
Rated current at 35 °C ambient
temperature
1,560 A 2,100 A
Rated short-time withstand
current I
cw
(1 sec)
1)
50 kA 50 kA
1)
Rated conditional short-circuit current I
cc
= 100 kA
Tab. 5/2: Rating data of the vertical distribution busbar 3NJ62
Built-in elements Height in mm Version
Blanking cover for
empty slots
50
1)
Plastic
100, 200, 300 Metal
Device compartment
(mounting
plate with
compartment door)
200, 400, 600
Usable overall device
depth 180 mm
1)
Accessory 3NJ6900-4CB00
Tab. 5/3: Additional built-in elements for 3NJ62
Tab. 5/4: Derating factors for 3NJ62 fuse links
Tab. 5/5: Rating data of the 3NJ62 cable feeders
Nominal current of fuse link Derating factor F
I
n
< 630 A
0.8
I
n
≥ 630 A
0.79
Fig. 5/2: Pluggable in-line switch-disconnectors 3NJ62
Type
Nominal device
current
Space requirements of the in-line unit (height)
1)
Size
Rated current
1)
at 35 °C ambient temperature
3-pole 4-pole
3NJ6203 160 A
50 mm 100 mm 00 125 A
3NJ6213 250 A
100 mm 150 mm 1 200 A
3NJ6223 400 A
200 mm 250 mm 2 320 A
3NJ6233 630 A
200 mm 250 mm 3 500 A
1)
Rated current with fuse link = nominal device current
The configuration rules stated in the following are to be observed

Siemens Sivacon S8 Specifications

General

Brand	Siemens
Model	Sivacon S8
Category	Industrial Equipment
Language	English