ABB ZS1 Instruction Manual page 24

• Align the panels on the foundation frame.
• Join the panels together with fastener material
from the „panel screws"bag group.
• Remove vertical intermediate wall 9 in front of the
busbar compartments by releasing the fastening
screws.
• Release the fastening screws and draw out hori-
zontal partition 20 below the withdrawable part
travel rails.
• Release and remove floor cover 17.
• Remove covers 43.1 and 43.3 in the circuit-
breaker compartment and covers 43.2 and 43.4
in the cable compartment.
• Align the panels on the foundation frame one
after another for correct position and vertical
alignment (deviations of the panel edges from
the vertical must not exceed 2 mm, particulary at
the front) and bolt the panels together. It is
advisable to start from the centre when
assembling switchgear with more than ten
panels.
• When bolting together panels without busbar
partionings, insert a shim 27 between the panels
above the busbar apertures.
• On switchgear with busbar partionings, also
install and screw bushing plates 28/28.2
externally to the right or left hand panel wall.
• When the switchgear has been properly
assembled, fasten the panels to the concrete
floor using dowels, or weld or adequately bolt
them to the foundation frame.
5.4 Installation of the busbars
(Figures 5/8 to 5/12)
• Clean all insulating parts prior to installation with
a soft dry cloth.
• Install bushings 29 and/or 29.4 (for switchgear
with busbar partioning only):
– Insert bushing 29 and/or 29.4 in bushing plate
28 and/or 28.2.
– Fasten the bushing 29 with the screw material
28.1 in bag group „panel partitions".
• Busbar connections:
– The silver plated surfaces of the connections are
to be cleaned with a metal free nonwoven
cleaning cloth and thinly and evenly coated with
Isoflex Topas NB 52 grease.
– The non-silver
connections are either to be brushed under
grease with a wire brush, preserving the grease
film, or cleaned with a metal-free non-woven
cleaning cloth and evenly greased with a thin
coat of Isoflex Topas NB 52.
ABB Power Distribution
plated surfaces of
• Prepare insulating covers 58 to suit the relevant
busbar and thread them onto the busbar.
• Install the busbars panel by panel. Screw on the
individual busbar elements one above the other
(depending on the system layout) and in line with
the flat tee-off conductor 2.
Follow the assignment of screw material 3.4 to
3.7 from the various „junction" bag groups to the
spacer plates 3.2 and 3.3.
For tightening torque see the table in section 5.3.
Use one dished washer for the head side and
one for the nut side.
• In end panels, also install supports 58.1 with
washers 58.6 and 58.7 to support the insulating
covers 58.
Also fit lid 58.5 in end panels for rated voltage
17.5 kV.
• Position insulating cover 58 over the relevant
bolted joint, and slide the lid onto the cover until
it clicks into place.
5.5 Installation of the top mounted boxes
Due to reasons of transport, attachments to the
panels are not usually completed at our works. As
far as possible however, they are pre-mounted.
5.5.1 Voltage transformer for busbar metering
(Figures 5/13 and 5/14)
• Top mounted box 79 with screwing material in
the group of bags „Top mounted box for
metering" is to be mounted on the busbar
compartment.
• Connecting bars 2.2 with the tee-off conductors
2 at the junction point are to be screwed
together according to figure 5/14. However, if
necessary, the additional spacer plate 3.2 and
threaded plate 3.8 as well as the screwing
material from the group of bags "top mounted
box for metering" are to be used.
• Insulating cover 58 is to be brought into position
as is described in section 5.4.
• Intermediate box 79.1 with the screwing material
from the group of bags „top mounted box for
metering" is to be mounted on the control
cabinet. The conduction tube 79.2 is to be
positioned and inserted into the reducer rings
79.3.
• Secondary circuits from the voltage trans-
formers are to be led to the terminal strips and
the
connected according to the cable core markings
and the circuit diagramm.
25