62 ZX2 GAS-INSULATED MEDIUM VOLTAGE SWITCHGEAR
cones
Important note
cones for damage. If there is damage to
the outer cones, please contact our
service department.
cones
Remove any surplus or dirty grease or soiling
from the cable sockets and/or the outer cones
with a soft, clean, non-fraying cloth. Use intensive
cleaner M.T.X. 60 forte for cleaning if necessary.
Fitting the cable connectors
Hazard warning
Heat shrinking procedures must no be
carried out within the cable compart-
ments due to safety concerns and
hazardous effects of heat inside the
cable compartments.
• Connect the cable connectors to the relevant
cable sockets or outer cones in accordance with
the manufacturer’s instructions.
Important note
Observe the tightening torques for screw
connections given in the cable connector
manufacturer’s instructions.
• Refit the floor plates. Press the cable bushings
into the openings provided in the floor plates.
Hazard warning
high voltage cables with the aid of the
cable clamps to the cable supports.
• Connect the grounding conductors of the cable
screens to the grounding bar in the panel.
• If window-type current transformers are used,
route the grounding conductors of the cable
screen back through the current transformers
and connect the grounding conductor to the
grounding bar in the panel.
• Refit covers of the cable compartment.
3.4. Connecting the main grounding bar
• Connect the main grounding bar to the station
ground.
• Details of the cross section and the number of
connections can be found in the grounding dia-
gram (not included in ABB’s scope of supply).
3.5. Connection of cables and wiring
3.5.1. Control cables and wiring
Carry out the laying and connection of external
control cables and the grounding of the cable
screens of external control cables in accordance
with the accepted EMC rules (EMC = electromag-
netic compatibility).
• Establish the panel to panel connections of the
control wiring. The panel to panel connections
are of the plug-in type or will be established via
screw type terminals. In case of screw type ter-
minals wire according the wiring diagrams.
• The secondary cable entry for external control
cables and wiring is located in the floor plate of
the low voltage compartment. Lead external
control cables and wiring through the floor
plate using reducer rings, and connect these in
accordance with the wiring diagram.
3.5.2. High voltage cables
The high voltage cables are to be installed after
high voltage testing.
• Dismantle the cable supports within the cable
compartment. Dismantle the floor plates of the
cable termination compartments. Remove the
cable bushings from the floor plates.
• Lay the high voltage cables to the panels in ac-
cordance with the project planning.
Important note
cables are correct!
• Slide the cable bushings over the cables.
• Connect the cable connectors to the cables in
accordance with the manufacturer’s instruc-
tions.
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