I.L. 16913A
Effective July 2007
2
Fig. 1
A. Power switching contacts which close or open
to connect or disconnect the load circuits to the
respective power sources.
B. Transfer mechanism which functions to drive the
power switching contacts to the appropriate
positions.
C. Intelligence circuitry which monitors the
condition of the power sources and makes
transfer operation decisions.
A separate instruction manual is always provided for
the ATS Controller of this equipment only. The
user/installer should read and thoroughly understand
this separate document in conjunction with this
manual before proceeding with installation and
operation of the ATSBI equipment.
2. Isolation Switch and Operating Mechanism
The isolation contacts are load break switches which
when actuated by means of the isolation
mechanism operating handle, disconnect all power
to the ATS power switching contacts. This allows
the isolated ATS to be inspected or maintained with
all power disconnected.
3. Bypass Switched
The bypass switch permits power continuity to
critical load circuits while the ATS is isolated. Normal
and emergency bypass switches are provided to
permit bypass to either power source, but both
bypass switches are interlocked with the isolation
switch to positively prevent inadvertent paralleling of
sources.
INSTALLATION
Cutler-Hammer ATSBI Switches are factory wired
and tested. Installation simply requires mounting
and connecting of power cables (or bus), engine
start signal wires, and auxiliary control circuits (if
required).
MOUNTING
Remove all packing materials from the unit including
any internal shipping braces.
Inspect the unit thoroughly for obvious shipping
damage or deformation. Protect the unit from
construction grit and metal chips during the
installation process.
Lifting eyes are provided with the unit to facilitate
handling. If not already in place, assemble lifting
eyes to top of enclosure using hardware provided
with eyes. DO NOT attempt to lift unit by any means
other than lifting eyes. Lifting by other means can
result it damage to equipment. All metal subpanels
must remain in place prior to lifting equipment into
place via lifting eyes.
The floor mounted unit must be mounted straight
and square on a flat and level floor surface.
If bottom cable entry is required, conduit stubs must
be appropriately positioned in prepared mounting
pad prior to installation of unit.
Bypass
Isolation
ATS
