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10
Installation
01.4IB.26264A
FlexGear
™
Low Voltage Arc Resistant Switchgear
Ch 4 Installation
Contact the Powell Service Division for installation,
maintenance, and renewal parts assistance. To
contact the Powell Service Division call
1.800.480.7273 or 713.944.6900,
It is the responsibility of the purchaser to set
or program components such as protective
relays, meters, timers, etc., in accordance with
the requirements of the particular installation,
before placing the switchgear with vacuum circuit
breakers into service. Programmable devices may
be shipped with temporary programming, used to
test the switchgear. Electromechanical relays may
be shipped in a blocked position to avoid damage
during shipment. Refer to separate instructions for
these components for information on setting or
programming.
A. G
enerAl
This section contains information on receiving,
handling, positioning, power cable termination,
grounding, and checks to make the equipment
ready for operation.
Once the assembly of the metal-enclosed
switchgear is completed on site, all joints and
hardware, including bus connections, structural
assemblies, and control connections, should
be checked for tightness and proper torque
values. See
Table C, Bolt Torque Values for Powell
.
B. r
eceIvInG
Powell FlexGear™ is fabricated in rigid,
floor-mounted, self-supporting steel vertical
sections. The switchgear vertical sections
are shipped in an upright position and when
received should be kept upright.
When the switchgear is received, check for
signs of damage. If damage is found or
suspected, file claims as soon as possible with
the transportation company and notify the
nearest Powell representative.
Refer to the instruction bulletin furnished with
the circuit breaker for receiving, handling, and
storage instructions on the circuit breaker.
Some components such as top-mounted
resistors or potential transformers, may be
shipped separately. These components are
identified by a number coinciding with that of
the switchgear vertical section on which they
are to be mounted.
c. H
AndlInG
Powell recommends the switchgear be
handled or moved by means of an overhead
crane. If an overhead crane is not available the
switchgear may be moved on an even surface
by the use of rollers or heavy duty pipes placed
under the switchgear. The use of a forklift
is not recommended, since the forks may
damage the compartments or interior parts
of the switchgear vertical sections. If no other
method of handling is available, the forks must
go completely under the switchgear base to
avoid damage to the switchgear.
The switchgear is shipped with the circuit
breakers installed unless other instructions
are given. If the circuit breakers are shipped
installed, they are done so in the open and fully
connected position. Refer to the appropriate
publication shipped with the device for
removal instructions of the circuit breakers.