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| Products> Okken |
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Architecture> Typical
distribution fields
Okken switchboards are vertically divided into
one or more fields. A distribution field is
generally composed of:
  A basic
cubicle housing the power devices and the busbars
A
connection/auxiliary compartment
The basic cubicle has four fully partitioned
volumes:
Main
busbar – placed at the top of the
switchboard
Switching
units are arranged within modular volumes that
include the necessary space for proper operation,
safety perimeters and for connections
Distribution
busbar located at the rear of switching units
volume
Functional
plinth allowing cubicle handling, natural
ventilation and floor fixing
The connections/auxiliary compartment could be
attached:
At the
right/left side of the basic cubicle
At the
rear side of the basic cubicle
The compartment is factory equipped with all
necessary elements for cable connection and
fixing.
The Okken system has four types of fields (each
field having a typical design for the vertical
busbar):
230
– for the installation of high power air
circuit breakers (ACBs) Masterpact NW40b/50/63
(4000 to 6300A). These devices are normally used
as incoming or coupling units.
115
– for the installation of air circuit
breakers Masterpact NW08-40 (800-4000A),
Masterpact NT08-16 (800-1600A) and moulded case
circuit breakers (MCCBs) Compact NS630b –
1600(630 – 1600A). One, two or three CBs
could be located in fixed locations within the
basic cubicle, as incoming, outgoing, or coupling
units.
70
– for the installation of power CBs
Masterpact NT 08-16/compact NS630b – 1600
and for fixed/ disconnectable/ plug-in/
withdrawable units up to 630A. This type of field
is used generally for outgoing units.
185
– a particular design for the installation
of “in-line” fused switches type SASIL
– Jean Müller. Different fields could be
mixed to form the switchboard layout, according
to the system configuration rules. |
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