Eaton Power Xpert XGIS, Instruction Booklet

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34
Instruction Booklet IB022018EN
Effective July 2020
Instructions for the installation and
commissioning of Power Xpert
TM
XGIS gas insulated switchgear
EATON
www.eaton.com
Bus joints are characterized by their bus size and by the bushing
cones they can accommodate.
•
A Type C bus joint has a top throat suitable for a Type C plug and a
bottom throat suitable for a 1250 A bushing cone.
•
A Type F bus joint has a top throat suitable for a Type C plug and a
bottom throat suitable for a 2500 A bushing cone.
•
Each bus joint uses a threaded rod to connect the bus with the
tank cone. Type C and Type F bus joint rods are different.
•
End bus joints use a cylindrical insert to balance the clamshell
clamping force.
End bus joints use a cylindrical insert to balance the clamshell
clamping force. See Figure 62 , which shows the differences
between Type C and Type F bus joints.
Figure 62.
1250A SSIS Bus Joints
2500A SSIS Bus Joints
Nut and Lock Washer
Type C
End Bus Joint
Type C
Double Threaded Rod
Type C
Tank Bushing Cone
Type C
Plug
1250 A
Busbar
Type C
Cross Bus Joint
Clamshell
Type F
Double Threaded Rod
Type F
Tank Bushing Cone
Type C
Plug
Cap
Cap
Nut and Lock Washer
Type F
End Bus Joint
2500 A
Busbar
Type F
Cross Bus Joint
Clamshell
Bus joint differences.
1.6.2 Power cable conductors in XGIS switchgear
The customer’s power cables terminate in XGIS by fitting separable
cable connectors onto the XGIS tank bushings located in the power
cable compartment. The installed cables are clamped in place using
cable cleats mounted on the cable compartment cable brackets (see
Figure 63 ).
The maximum number of cable connectors possible depends on the
XGIS rating. Multiple connectors per phase are configured using tee
or elbow type separable connectors ( Figure 65) . A surge arrester
can be connected as the last connected device.
Figure 63.
Separable cable connectors
Cable cleats
1250A cable connectors in cable compartments.
The separable connector design will change depending upon the
output cable dimensions. In every case, a maximum of three output
connections per phase can be made: up to one tee connector
and two coupling connectors, or one tee connector, one coupling
connector and a surge arrester (see Figure 64 ).
The 2000 A and 2500 A XGIS designs use dual cable bushings per
phase for cable connections (see Figure 65 ).