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20
Installation
Low Voltage Arc Resistant Switchgear (LVSWGR-AR
®
)
Equipped with Magnum DS Circuit Breakers
01.4IB.26263B
k. c
ontrol
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ABleS
When control conduits enter the unit from
below, the conduit should not extend more
than 1 inch above the floor. The control cables
may be pulled through the conduits before or
after the switchgear is installed.
If the control conduits enter from above, drill
the top cover of the front enclosure to suit the
conduits, being careful not to damage existing
wire bundles. Fasten the conduits to the cover
with locknuts.
The cable from the control power source
to the switchgear must be large enough to
avoid excessive voltage drop when the circuit
breakers are operated (see testing instructions
that apply to a particular device). Where units
have been split for shipment, any control or
other secondary leads that must connect
across the split will be arranged with terminal
blocks in a convenient location so that the
wires can be reconnected. The wires will
be cut to length and formed before being
folded back so that a minimum time will be
required for reconnecting them. All entries
should be sealed with duct seal to prevent gas
transmission in case of a fault.
l. I
nSertInG
And
r
eMovInG
tHe
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IrcuIt
B
reAker
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tHe
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IrcuIt
B
reAker
c
oMpArtMent
Before inserting a removable element into
the compartment, manually check the shutter
mechanism, and the truck operated cell switch
(TOC) for free movement. These checks should
be made with all circuits deenergized.
CAUTION
Refer to the Eaton publication shipped with
the device for all installation and removal
procedures.
M. I
nSpectIon
And
t
eStInG
For assistance with testing and inspection
contact the Powell Service Division at
1.800.480.7273 or email at
After the equipment has been installed and
all connections made, it shall be tested and
inspected before putting in service. Although
the equipment and devices have been
completely tested at the factory, a final field
test should be made to ensure the equipment
has been properly installed. The primary
equipment should be completely deenergized
while the tests are in progress.
The directions for testing devices such as
relays, instruments, and meters are given in the
instruction bulletin furnished for each device.
General instruction bulletins are furnished for
complicated automatic equipment, describing
the sequence of operation for the devices
required to perform the desired function.
1) Inspection
The following checks need to be made
during inspection:
a. Power and secondary wiring
connections are properly made.
b. Ground connections are properly made.
c. Circuit breakers prepared per Magnum
DS Instruction Manual.
d. All vent areas are clean and free of
shipping or construction materials.
e. Any tie downs are removed from
plenum vent (Figure 9) on top of
equipment.
f. Verify plenum vents are in fully open
position before equipment is energized.
g. All arc flash preventers (AFP) (Figure 10)
are open and operate freely.
h . All tools are removed from the
equipment and the area is free from
debris.
