Frame Installation Instructions; Installing The Stationary Drawout Element - Siemens SBA 800 Information And Instruction Manual

Frame Installation Instructions

Stationary Drawout Element
General Instructions
Installation instructions for systems breakers, trip units, and
rating plugs are presented in this section. Installation instruc-
tions for accessories that may be installed in the field are
presented in the Accessories section.
Installing Drawout Constructed SB Breakers
Drawout constructed SB breakers are designed to be in-
stalled from the front into a switchboard with a minimum
width opening of 19 inches. The stationary drawout element
may be secured in the switchboard at the front and rear to
vertical supports, or at the top and bottom to horizontal
supports.

Installing the Stationary Drawout Element

Prepare the switchboard for installation of the stationary
drawout element in accordance with the outline drawings
located in the Outline Dimension Drawings section, pages
82-93. The outline dimension drawing of the stationary
drawout element for the 800A and 1200A frame is located on
pages 82-83; for the 2000A, pages 86-87. The locations of
the mounting holes and the recommended screws are
depicted on the drawings. If the stationary drawout element
is secured to vertical supports, a minimum of eight screws
and bolts should be used, four at the front and four at the rear.
Carefully uncrate the stationary drawout element. Remove all
packing material with the exception of the tie wraps holding
the extension rails in place. Depending upon the installation
scheme, it may be necessary to remove the tie wraps on the
extension rails just prior to securing the stationary drawout
element in the switchboard. If the stationary drawout element
is secured to a pallet, remove the securing device.
If the preferred rear mounting surface is to be used (see
Outline Dimension Drawings section), remove the eight (8) 3/
a"-16 bus support bolts. Do not loosen or remove 1/4"-20
bus support screws. Use the 3/8"-16 bolts to secure the
rear of the stationary drawout element when it is installed .
Torque 3/3"-16 bolts to 18-22 ft. Ibs.
Courtesy of NationalSwitchgear.com
Attach lifting device to identified lifting points only.
The stationary drawout element can be manually lifted and
held in position as it is being installed. However, if preferred,
the two holes identified as lifting points on the outline drawing
may be used to attach a lifting device. (NOTE: The two (2) rear
holes are located such that the stationary drawout element
can be easily balanced as it is being lifted by a crane or hoist.
Do not lift stationary drawout element by only the two (2) top
front holes. If preferred, device can be lifted by utilizing all four
(4) top holes.) Lifting devices should not be attached to any
other points. The stationary drawout element should not be
lifted by the primary stabs.
Lift the stationary drawout element into position and secure
it in place. Remove the lifting device.
Remove the tie wraps securing the extension rails. Check to
ensure that no packing or other foreign material impedes rail
movement.
9