Eaton Power Xpert XGIS, Инструкция пользователя

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51
Instruction Booklet IB022018EN
Effective July 2020
Instructions for the installation and
commissioning of Power Xpert
TM
XGIS gas insulated switchgear
EATON
www.eaton.com
5.9.1 SSIS bus installation in XGIS gas insulated switchgear
SSIS type busbars are installed as main bus conductors on the XGIS
system.
The SSIS conductors and couplers consist of three concentric layers:
•
The live conductor
•
The insulating layer
•
The conductive shield outer layer
Figure 86 shows some example SSIS components and their
arrangement as bus sections and terminations. Bus sections start
at bushings coupled to end or cross bus joints, extend using SSIS
bus (solid sections), and terminate at bus connection bushings
connected to end or cross bus joints.
Figure 2 shows the relative arrangement of the incoming bus
connectors to the XGIS tank and its interior components.
See
Figure 60
for an example of the XGIS main bus compartment
and its bushing cones.
Note : All bushings without main busbar or cables installed shall have
a grounded SSIS cap.
The bushings are mounted on top of the gas tank and are connected
via bus to the switching components in the tank.
Figure 86. SSIS components and assemblies.
Nut and Lock Washer
Type C
End Bus Joint
Type C
Double Threaded Rod
Type C
Tank Bushing Cone
1250 A
Busbar
1250 A Busbar Conductor
Type C
Cross Bus Joint
Clamshell Halves
Clamshell
1250 A SSIS Busbar and Bus Joints
Grounded Outer Sheath
Inner Insulation
End Bus Joint
Disk
End Bus Joint
Disk
SSIS cross bus joints are used to extend the bus between the
adjacent vertical sections.
Figure 87. SSIS bus and bus joints installed on bus
connection bushings above the sealed tank.
Figure 61 shows how the SSIS bus shield grounds are connected to
XGIS bus connection bushings in the main bus compartment.