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Revision #2
Instructions for the installation and
Opening a 3PS follows the same procedure:
•
slide the padlock hasp to the left,
•
insert and turn the Selector Key,
•
insert the Manual Operation T-handle into the Connect position
notch,
•
turn the T-handle counterclockwise to the Open Position notch
before removing it. Return the Selector Key to neutral position.
•
slide padlock hasp to the right.
Grounding a 3PS (Grounded/Ungrounded)
To manually ground the switch, a similar process is followed:
1. Slide the Grounding blocking plate padlock hasp to the right.
2. Insert the Selector Key into its port and rotate it
counterclockwise to the Ground position.
3. Insert the Manual Operation T-Handle into the appropriate
Ground access port Switch initial position slot.
4. Rotate the Manual Operation T-Handle from its initial position
to its new final position. Remove the Manual Operation
T-Handle.
5. Restore the Selector Key to its neutral position (neither
Isolation nor Ground position). Remove the Selector Key.
6. Slide the Ground padlock hasp back to its Lock position and
apply a padlock if appropriate.
4.3.1.1. 3PS Mech electrical operation check
Confirm that the circuit breaker is open (check the Breaker Status
window for a green flag with “Open” indication).
Using local control devices on the circuit breaker door (if furnished)
or temporary momentary pushbuttons wired to the remote inputs
on the low-voltage customer terminal blocks (see the project
schematics and wiring diagrams), initiate 3PS Mech position
changes.
Test the 3PS Mech by commanding movement to all three possible
positions (ground, disconnect, connect).
Confirm that in each case a complete motion operation is executed,
with appropriate indications on the 3PS Mech status indication and
3PS camera.
4.3.2. Checking the gas compartments
Check every vertical section’s gas pressure gauges to verify that
their readings are between 1.48 to 1.52 psi absolute.
If any gauge reading falls below the minimum value, use a sniffer to
check for leaks around the switchgear tanks.
4.4. Qualified personnel
•
WARNING
IMPROPERLY INSTALLING OR MAINTAINING THESE PRODUCTS CAN
RESULT IN DEATH, SERIOUS PERSONAL INJURY, OR PROPERTY DAMAGE.
READ AND UNDERSTAND THESE INSTRUCTIONS BEFORE ATTEMPTING
ANY UNPACKING, ASSEMBLY, OPERATION OR MAINTENANCE OF THE
EQUIPMENT.
INSTALLATION OR MAINTENANCE SHOULD BE ATTEMPTED ONLY
BY QUALIFIED PERSONNEL. THIS INSTRUCTION BOOK SHOULD NOT
BE CONSIDERED ALL INCLUSIVE REGARDING INSTALLATION OR
MAINTENANCE PROCEDURES. IF FURTHER INFORMATION IS REQUIRED,
YOU SHOULD CONTACT EATON.
4.5. General field installation requirements
Power Xpert IGX vertical section installation should be completed
after construction of the site electrical rooms are completely finished
and power is available for lighting and field installation.
The destination electrical room should be kept dry and well
ventilated. Cable vaults for power and control wiring must be
completed, with structural supports and anchoring points as shown
in
Indoor operating conditions for the Power Xpert IGX vertical sections
must conform to an ambient temperature greater than -5 degrees C
and less than 40 degrees C, altitude less than 1000 m (consult Eaton
representative for higher altitudes). Ideally, atmospheric conditions
within the switchgear room shall be free of corrosives, smoke, dust,
and flammable vapors.
4.6. Installation requirements
Power Xpert IGX switchgear is designed for installation in the elec-
trical room over cable vaults. It is very important that the installed
lineup be mounted on a level and flat foundation.
Refer to the customer drawings for installation guidance.
See customer drawings for ingress protection requirements.
All low-voltage power cables and signal wiring entering or exiting
Power Xpert IGX switchgear enclosure must be sealed appropriately
to meet ingress protection (IP) requirements of the application.
4.7. Anchoring shipping groups to the foundation
See
for the locations of 18 mm [0.71] diameter mounting
holes for securing a Power Xpert IGX switchgear assembly vertical
section to a finished foundation. Use of M16 SAE grade 5 hardware
tightened to 183 Newton-meters [135 ft –lb] is recommended.
Use of other post-installed mechanical anchor systems, bonded/
adhesive type systems, pre-installed cast-in-place systems such as
shear lugs, L-bolts, and J-bolts or plug welding the Power Xpert IGX
switchgear vertical section at the mounting hole locations to cast-in-
place structural steel materials or to a steel house foundation is the
sole responsibility of others.
Alternative mounting systems must have equal or greater average
ultimate tensile and shear load capabilities as SAE grade 5 hardware.
In addition to the load capabilities of the mounting system, the
bearing strength and bearing surface at each Power Xpert IGX
switchgear vertical section mounting hole location must be taken
into account.
Alternative mounting systems must provide equal or greater bearing
properties as a Key Belleville’s, Inc., K-1125-E-125 washer or other
manufacturer’s equal device use with SAE grade 5 hardware at each
Power Xpert IGX anchor location. Consult a licensed structural or civil
engineer prior to selecting a mounting system if the system other
than that recommended is preferred.
4.8. Installing main bus and coupling the units
The main bus for each phase in Power Xpert IGX vertical sections
is located inside the isolated gas tanks. These tanks are filled at the
factory and require no gas handling on site when making main bus
connections during installation. Shielded insulated main bus links
are installed into main bus bushings between each vertical section
to make the connection between phase tanks. A representative
main bus link is shown in
shows the shielded
insulated bus sheath, and
shows the combination as an
assembled insulated bus with the sheath and ground wire. A main
bus link for connection to an adjacent vertical section main bus
bushing is shown in
.
