I.B. ATS-V003
Page 13
Effective 6/98
SECTION 4: INSTALLATION AND WIRING
4.1 GENERAL
Transfer switches are factory wired and tested. Installa-
tion requires solidly mounting the enclosed unit and con-
necting power cables and auxiliary pilot circuits.
Physical mounting procedures and power cable connec-
tions are covered in this section. All other required
wiring or electrical connection references are covered in
a separate Customer Wiring Booklet packed with the
transfer switch. Locate the wiring booklet, review it, and
keep it readily available for reference purposes during
installation and testing. Once a transfer switch is proper-
ly installed and wired, it should be mechanically and
electrically checked for proper installation and operation.
The procedures for these initial mechanical and electri-
cal checks are outlined in Section 6 of this instruction
manual.
To facilitate the procedures described in this sec-
tion for the vertical design, remove the solid steel
shield over the power panel. The shield is attached
to the ratchet assembly with four screws. Remove
the four screws and shield until the procedures are
completed.
BE CERTAIN THAT THE SOLID STEEL POWER
PANEL SHIELD USED WITH THE VERTICAL DESIGN
IS PROPERLY INSTALLED BEFORE TRANSFER
SWITCH EQUIPMENT IS PUT INTO SERVICE. THE
SHIELD PROVIDES PROTECTION FROM DANGER-
OUS VOLTAGES AT THE LINE AND LOAD TERMI-
NALS WHEN THE EQUIPMENT IS IN OPERATION.
FAILURE TO DO SO COULD RESULT IN PERSONAL
INJURY OR DEATH.
4.2 MOUNTING LOCATION
Choose a location that offers a flat, rigid mounting sur-
face capable of supporting the weight of the enclosed
transfer switch equipment (Figure 4-1). Avoid locations
that are moist, hot and/or dusty. Enclosure designs are,
however, available for special environments. If there are
any doubts as to location suitability, discuss it with your
Cutler-Hammer representative.
Check to make certain that there are no pipes, wires or
other mounting hazards in the immediate mounting area
that could create a present or future problem.
Carefully remove all packing material from the transfer
switch at the mounting location. Even though an equip-
ment inspection was made when the equipment was
received, make another careful inspection of the enclo-
sure and the enclosed transfer switch as packing materi-
al is removed and the enclosure readied for mounting.
Be especially alert for distorted metal, loose wires or
damaged components.
4.3 MOUNTING PROCEDURE
SINCE THE ENCLOSED TRANSFER SWITCH MUST
BE LIFTED INTO PLACE FOR MOUNTING, BE CER-
TAIN THAT ADEQUATE RESOURCES ARE AVAIL-
ABLE FOR LIFTING TO AVOID PERSONNEL
INJURIES OR EQUIPMENT DAMAGE.
Refer to Figure 4-1 for enclosure mounting dimension
references. All transfer switch equipment enclosures are
of the same design. Only the overall physical dimen-
sions change.The enclosure is provided with four elon-
gated mounting holes, two in the top mounting flange
and two in the bottom.
If the transfer switch equipment is of the vertical design,
the power panel is provided with two sets of mounting
holes. One set positions the panel for top entry of cables
and one set for bottom entry (Figure 4-2). This will be
covered in more detail later in this section under “Load
Lug Location.”
Transfer switch equipment is assembled and supplied
as standard for top entry, although equally adaptable to
bottom entry. Cable entry holes are not part of the
enclosure when shipped from the factory and must be
provided in the field, either before or after mounting the
enclosure.
EXTREME CARE SHOULD BE TAKEN TO PROTECT
THE TRANSFER SWITCH FROM DRILL CHIPS, FIL-
INGS AND OTHER CONTAMINANTS WHEN MAKING
THE CABLE ENTRY HOLES AND MOUNTING THE
ENCLOSURE TO PREVENT COMPONENT DAMAGE
OR A FUTURE MALFUNCTION.
!
WARNING
!
CAUTION
!
CAUTION
NOTICE
Summary of Contents for Cutler-Hammer ATVSKDA30300XSU
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