Eaton Power Xpert XGIS, Instruction Booklet

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Instruction Booklet IB022018EN
Effective July 2020
Instructions for the installation and
commissioning of Power Xpert
TM
XGIS gas insulated switchgear
EATON
www.eaton.com
Figure 18. 3PDS (manual operation).
The 3PDS mechanical status display uses symbols to indicate
switch position. The display windows show the switch in its proper
positions only when the symbols are in the center of their windows.
See Figure 17. Refer to Table 1 for disconnect position associated
with I and O symbols displayed in the status windows.
Table 1. 3PDS status display table
3PDS position
Ground 1 0
Open 0 0
Closed 0 1
The 3PDS comes standard with locking means to prevent closing
the switch or grounding the switch. These locking features consist
of brackets for padlocks and Kirk lock fittings. Each bracket, whether
for preventing closing or for preventing grounding, is labeled with its
function. They are spring loaded so that the bracket tooth must be
pushed into its 3PDS port before a padlock hasp or Kirk lock bolt can
be inserted to secure the switch mechanism. See Figure 19 .
Figure 19. 3PDS locking features - standard.
Circuit breaker
m CAUTION
THIS DEVICE MAY EMIT X-RAYS IF VOLTAGE HIGHER THAN RATED
MAXIMUM IS APPLIED ACROSS THE OPEN CONTACTS, OR IF CONTACTS
ARE SPACED LESS THAN RATED STROKE. IN SUCH A CASE PERSONNEL
MUST BE PROTECTED WITH APPROPRIATE SHIELDING.
m CAUTION
THIS SYSTEM INCLUDES A STORED ENERGY OPERATING MECHANISM,
ACCESSIBLE BEHIND A COVER PLATE.
BE SURE TO DISCHARGE ANY STORED ENERGY IN THE BREAKER
MECHANISM PRIOR TO REMOVING THE ACCESS COVER PLATE. FAILURE
TO DO SO CAN RESULT IN INJURY TO THE OPERATOR.
The circuit breaker assembly consists of three vacuum interrupters,
one per phase, each housed in a molded frame. Input power
connections from the 3PDS couple to top center input terminals
mounted on each vacuum interrupter frame. The breaker outputs are
bused to cable compartment bushings.
The circuit breaker vacuum interrupter poles are actuated by a
stored-energy spring system, mounted in the breaker operating
mechanism. Under normal conditions, an electric motor drive
charges the springs with close and opening energy. For manual
operation, the mechanism is charged using a lever with gear
reduction. The charging lever is located on front of the circuit breaker
operating mechanism.
The circuit breaker can be electrically or manually charged, and
electrically or manually opened or closed.
Push buttons (I, O) provided on the circuit breaker front panel are
used to trigger mechanical opening and closing of the breaker.
Electrical charging, opening and closing can be initiated either locally
or remotely via electrical controls as required for a given application.
The molded vacuum interrupter frame is attached to its operating
mechanism. The operating mechanism is located outside the sealed
tank. The molded vacuum interrupter frame assembly is located
inside the sealed tank. The interrupter operating shafts are attached
to the operating mechanism using sealed metal bellows that permit
shaft travel without compromising the tank gas seal. See Figure 20 .
The vacuum interrupter frame contains three vacuum interrupter
poles, one for each phase. Each pole is a ceramic bottle with metal
bellows and two pole pieces. One pole piece is fixed in the bottle,
while the other pole is free to move. The movable pole is welded
to the metal bellows so that the pole can move while retaining the
necessary vacuum inside the bottle. See Figure 21 .
Figure 22 shows the circuit breaker faceplate with status displays, a
manual charging lever and manual control pushbuttons. The “PUSH
TO OPEN” button is protected by a padlock-able cover. The cover
status is indicated by an electrical interlock block mounted on the
breaker frame top.