Siemens Sivacon S8 Planning Information

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SIVACON S8 Planning Principles – Circuit-breaker design
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3.2 Cubicles with up to three ACB
(3WL)
To allow space-saving installation, cubicles with up to three
circuit-breakers as incoming and/or outgoing circuit-break-
ers can be implemented for specific ACB types (3WL).
Cubicle dimensions and cable connection
In a cubicle with three circuit-breakers, the cables are
connected from the rear. A variant with cable connection
from the front does not offer any space advantages be-
cause of the required connection compartment. For this
application, cubicles with one circuit-breaker are used. The
three mounting slots can be designed independently of
each other either with a circuit-breaker, as device compart-
ment or as direct incoming feeder. Cubicle dimensions and
information about the cable connection are given in
Tab. 3/7 and Tab. 3/8. The number of connectible cables
may be restricted by the available roof/floor panel openings
and/or door installations.
Rated currents
The up to three circuit-breakers in the cubicle interact.
Dependent on the utilisation of the individual circuit-break-
ers and the current distribution within the cubicle, different
rated currents result for the individual circuit-breakers.
Tab. 3/9 states the maximum rated currents for three
concrete cases of current distribution in the cubicle:
• Variant A: same rated current for all three mounting slots
• Variant B: highest current for top mounting slot, lowest
current for bottom mounting slot
• Variant C: highest current for bottom mounting slot,
lowest current for top mounting slot
Information about an individual distribution of the rated
currents in the cubicle is available from your Siemens
contact.
Frame height for cubicles with up to three ACB is
2,200 mm.
Nominal
device
current
Cubicle
depth
Mounting
slot
Rated current at 35 °C ambient temperature
Variant A Variant B Variant C
Non-
ventilated
Ventilated
Non-
ventilated
Ventilated
Non-
ventilated
Ventilated
Up to
1,000 A
800 mm
Top 710 A 960 A 900 A 1,000 A 0 900 A
Center 710 A 955 A 905 A 1,000 A 980 A 1,000 A
Bottom 710 A 955 A 0 905 A 925 A 1,000 A
Up to
1,600 A
1,200 mm
Top 1,030 A 1,350 A 1,220 A 1,600 A 305 A 910 A
Center 1,030 A 1,350 A 1,230 A 1,600 A 1,200 A 1,440 A
Bottom 1,040 A 1,350 A 231 A 300 A 1,310 A 1,600 A
Tab. 3/7: Dimensions for cubicles with three ACB of type 3WL
Tab. 3/8: Cable connection in cubicles with up to three ACB
ACB type
Nominal
device
current
Cubicle width in mm
Cubicle
depth
in mm
3-pole 4-pole
3WL1106 630 A
600 600 800
3WL1108 800 A
600 600 800
3WL1110 1,000 A
600 600 800
3WL1112 1,250 A
600 600 1,200
1)
3WL1116 1,600 A
600 600 1,200
1)
1)
Main busbar up to 6,300 A
Tab. 3/9: Rated currents for special load cases of a circuit-breaker cubicle with three 3WL11 circuit-breakers in the cubicle
Cable lug DIN 46235
(240 mm
2
, M12)
1)
Max. number of cables connectible
per phase dependent on cubicle
depth
800 mm 1,200 mm
4 6
1)
It is possible to use 300 mm
2
cable lugs with a M12 screw,
but this cable lug is not in compliance with DIN 46235, although it
is supplied by some manufacturers.

Siemens Sivacon S8 Specifications

General

Brand	Siemens
Model	Sivacon S8
Category	Industrial Equipment
Language	English