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U n i G e a r Z S 1 I N S T A L L A T I O N , O P E R A T I O N A N D M A I N T E N A N C E
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5 Assembly of the switchgear on site
In order to obtain an optimum installation sequence
and ensure high quality standards, on-site
installation of the switchgear should only be
carried out by specially trained and skilled
personnel, or at least by personnel supervised
and monitored by responsible persons.
5.1 General
On commencement of installation on site, the
switch room must be completely finished. This
means it must be provided with lighting and an
electricity supply. In addition, it must be lockable,
dry and with facilities for ventilation. All the
necessary preparations, such as wall openings,
ducts, etc., for routing the power and control
cables up to the switchgear must already be
complete. The ceiling height must be sufficient
for the opening travel of the pressure relief plates
(Higher than 3 m).
The ceiling must be high enough for the assembly
of a pressure relief duct (Higher than 3 m).
Compliance with the conditions for indoor
switchgear according to IEC 62271-1, including
the conditions for the indoor temperature class
must be ensured.
5.2 Foundations
It is recommended that the switchgear is installed
on the base irons of a "C" profile shape set into
the concrete floor of switch room.
Further structural data guidelines enable a rough
calculation of the space required to be made and
the planning of the room design for a switchgear
project.
When the final construction documents are
compiled for the execution of a building, the
binding data supplied by ABB for a particular
case must always be taken into account!
Dimension chart of structural data (Also see figures 5/1 to 5/11)
Rated voltage
Panel width
Aisle width
1)
Switchgear room door width
Switchgear room door height
2)
Opening in ceiling if transported
through roof:
Width
Length
Ceiling load
3)
1) Pay attention to the appropriate national standards.
2) Applies to low-voltage compartments of standard height.
3) Approximate numbers depending on the type of panels.
5.2.1 Method of installation A – Installation of
the base irons
Due to different switchgear dimensions, one or
more parts make up the base irons. Their
installation is usually carried out by site personnel
and should, if possible, be performed under the
supervision of an ABB specialist.
Method of installation - Installation of the base
irons:
•
When base irons are composed of several parts,
connect them with a bolt in the required order
and position them horizontally
•
Lay the irons in the specified position on the
concrete floor as shown in the relevant foundation
drawing
•
Mark out holes for drilling. These holes are
for the anchoring bolts that will fix the base
irons in the floor
•
Put the plugs in the holes and use the bolts
to attach the base irons to the floor. Do not
tighten the bolts until the base irons have been
correctly leveled
•
Carefully level the base irons both longitudinally
and transversally over the entire length and
correct the height by using strips with a suitable
thickness and a levelling instrument. Usually
the top edge of floor frame should be 2 mm
above the finished floor surface (Fig. 26, 29)
Tolerances for laying the floor frame are:
•
Evenness tolerance: ±1 mm within a measuring
length of 1 m
•
Straightness tolerance: 1 mm per 1 m, but not
kV
12
FT
mm
500
G
mm
1300
mm
700/1200
mm
2400
mm
1000
mm
1500
kg/m
1200
2
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