25
E R E C T I O N O F T H E S W I T C H G E A R A T S I T E
In the interests of the best possible erection
sequence, and in order to ensurea high quality
standard of the panels, local installation of the
switchgear should only be carried out, or at least
responsibly managed and supervised, by specially
trained skilled personnel.
5.1 General site requirements
At the start of erection, the switchgear room at
site must be complete, fitted with lighting and
power for the erection work, lockable, dry, and
with good ventilation facilities. All necessary
provisions for laying of the power and control
cables such as openings, ducts, etc. must
already be in place.
Compliance with the conditions for indoor
switchgear to VDE 0670 Part 1000 and IEC
62271-1, including those for the " minus 5 indoor "
temperature class, must be ensured.
5.2 Fundamental notes on erection work
5.2.1 Tightening torques
DIN-bolts of tensile class 8.8 are to be used.
1) The rated tightening torques for fasteners without lubrication are
based on a coefficient of friction for the thread of 0.14 (the
actual values are subject to an unavoidable, partly not
inconsiderable, spread). Rated tightening torques for fasteners
with lubrication in accordance with DIN 43673.
2) Thread and head contact surface lubricated.
3) These values apply to welded studbolts only.
Any tightening torques which deviate from those in the general
table (e.g. for contact systems or device terminals) are to be
taken into account as stated in the detailed technical
documentation. It is recommended that the threads and head
contact surfaces of bolts should be lightly oiled or greased, so as
to achieve a precise rated tightening torque.
•
Remove any dirt from the surfaces in general and
from insulating material surfaces. Observe the
cleaning instructions in Section 7.2
•
When handling SF
6
, avoid any escape of gas into
the switchroom
-
Ventilate well if leakage occurs
5.2.2 Perform the following work to prepare
silicone insulating parts for assembly
•
Inspect the sillicone insulating parts
•
Clean soiled silicone insulating parts
•
Grease the insulating parts
•
Clean the sockets, the contact tubes and the
outer cone
Inspecting the silicone insulating parts
Only remove the relevant component from
its protective packaging immediately before
assembly.
Check the silicone insulating part for
damage prior to installation.
If you note any damage on the silicone
insulating part, only use the component
after this has been agreed with our service
department.
•
The silicone surface must be free of
-
Gas bubbles
-
Scoring
-
Damage
-
Abrasions
-
Foreign bodies
Cleaning of contaminated silicone insulating
parts
•
Remove surplus or dirty grease from the silicone
part with a soft, clean, non-fraying cloth
•
Clean the silicone insulating part using a soft,
clean, non fraying cloth and cable cleaner MAB
(GCE00910000P0100). Only moisten the cloth
slightly with cable cleaner. Apply only moderate
pressure when cleaning the black areas of the
silicone insulating parts on busbar connections.
Do not wipe from the black areas towards the
light insulating surfaces
•
After cleaning, wipe off surplus cleaner with
a dry cloth. As the cleaner causes the silicone
to swell slightly, it then has to dry for approx.
15 minutes in the air
Component
Insulating part in busbar connection
Sealing plug in busbar bushing,
silicone part of voltage transformer,
voltage sensor,surge arresters, test
bushings and blanking plugs
Quantity of assembly
paste to be used
20 g
10g
Greasing of insulating parts
•
Evenly grease the silicone parts with assembly
paste GCE009098P0101
•
Use the quantities set out in the table
Cleaning the sockets
•
Clean the mating piece of the silicone
part-the cable socket or busbar socket
with cable cleaner MAB as required and
allow it to dry. A light, clean film of
grease is permissible
5.2.3 Handling SF
6
•
As a rule, no gas work is necessary during
installation
Only have gas work performed by personnel
trained in the handling of SF
6
. Observe
instruction manual for details of handling
SF
6
.
•
Never discharge SF
6
into the atmosphere
5.3 Foundation frame
(Figures 5/9, 5/10, 5/11)
Switchgear on a foundation frame.
The relevant data for the order in hand can be
found in the ABB documentation.
The single or multiple panel foundation frame
can be supplied with the switchgear. It is as a rule
laid by site personnel and should be aligned
and inspected under the supervision of a
responsible specialist.
The specifications of DIN 43 661 are also to be
maintained when laying the foundation frame,
in particular the evenness and straightness
tolerances as a condition for perfect switchgear
assembly.
Tolerance conditions for laying of the
frame to DIN 43 661, version A:
•
Evenness tolerance: +/-1 mm per metre
•
Straightness tolerance: max. 1 mm per metre,
but max. 2 mm for the
entire length of the
frame
5.4 Erection and connection of the panels
(Figures 5/1 to 5/6)
Note
Do not walk on the top of the panels (rupture
point for pressure relief system!).
5.4.1 Preparatory work
•
Before joining up the panels, check the gas
pressure in each gas compartment witha
temperature compensated pressure gauge
(GCE0905091P101). The indication must be in
the green area of the scale on the measuring
instrument. If there is any deviation from the
specified pressure or if your site altitude is
greater than 1000 m, please contact us
•
Grease the upper surfaces of the foundation
frame (this facilitates erection and alignment
of the individual panels)
5.4.2 Erection of the switchgear
•
Erect the end panel of the switchgear at the
precise position specified on the foundation
frame
•
Remove the handling bracket (1.18)
•
Align the panel
•
Perform a final check on the aligned position
of the panel and fasten it to the foundation
frame
•
Remove the protective caps from the busbar
sockets (2.13)
•
Carefully check insulating parts (2.14) and
contact tubes (2.21) for any dirt, and clean if
necessary (see also section 5.2.2)
Note
Only prepare insulating parts and
contact tubes for the panel currently
being erected. Protect them from
contamination !
•
Evenly apply a thin coating of assembly paste
to the conical surfaces A of insulating parts
(2.14)
Note
Leave no ungreased areas on conical surface A.
•
Carefully insert bus connectors (2.21) and
insulating parts (2.14) into the busbar
sockets (2.13)
•
Slide the adjacent panel carefully and evenly
(without tipping) against the erected panel
in such a way that the bus connectors, insulating
parts and guide pins slide into the corresponding
bores without the use of force.
If necessary, align the panel.
•
As soon as the distance between the two panels
is so small that bolts (2.16) can be entered in
the bores in the erected panel, insert these,
each with nuts and dished washers respectively
•
Then join the two panels together by tightening
bolts (2.16) crosswise step by step
•
Completely bolt the panels together with bolts
(1.20), each with dished washers (1.22).
Bolt the aluminium sections of the subframes
of adjacent panels together at the specified
points with special parallel connectors (3.8).
•
When the panels have been completely
joined, check the second panel again for
correct alignment and fasten it to the
foundation frame (Figure 5/18b)
•
Dismantle connecting link (3.2) for the main
earthing bar (3.1) in the cable compartment
and lead it through to the adjacent panel.
Bolt the connecting link to the main earthing
bar with bolts (2.20) and one dished washer
at each of the bolt head and nut ends
•
Check the bolted connection between main
earthing bar (3.1) and the connecting link
(3.2) in the previously erected panel and
tighten bolt 2.20 if necessary
•
Erect the further panels by following the
same procedure
•
Assembly of the top pressure relief duct can
be effected during installation of the
individual panels or when all panels have
been joined together
•
Connect the systems main earthing bar to
the main station earth in accordance with the
earthing plan. It is recommended to connect
the main earthing bar of the switchgear
system to the main station earth as often as
possible (at the start and end of the
switchgear installation and at every second or
third panel)
Summary of Contents for ZX1.5-R
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