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IB140024EN
For more information visit: www.eaton.com
Instruction Booklet
Effective: October 2014
Page
15
ATC-300/900 40-400A (480/600Vac)
3-Postion Contactor Based Transfer Switch
4.3 Mounting Procedure
CAUTION
SINCE THE ENCLOSED ATS MUST BE LIFTED INTO PLACE FOR
MOUNTING, BE CERTAIN THAT ADEQUATE RESOURCES ARE
AVAILABLE FOR LIFTING TO AVOID PERSONNEL INJURIES OR
EQUIPMENT DAMAGE.
All equipment enclosures and power panels are of the same
design. Only the overall physical dimensions change. Note that
the enclosure is provided with four teardrop (elongated) mount-
ing holes, two in the top mounting flange and two in the bottom.
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. Cable access may be from the
top, bottom, and/or side.
CAUTION
EXTREME CARE SHOULD BE TAKEN TO PROTECT THE TRANSFER
SWITCH FROM DRILL CHIPS, FILINGS, AND OTHER CONTAMI-
NANTS WHEN MAKING THE CABLE ENTRY HOLES. EXTREME
CARE SHOULD ALSO BE TAKEN WHEN MOUNTING THE ENCLO-
SURE TO PREVENT COMPONENT DAMAGE OR A FUTURE MAL-
FUNCTION.
Figure 10.Typical (40A-400A) Contactor Based ATS
Equipment (Door Open) with an ATC-300 controller.
With the enclosed ATS equipment unpacked and ready for
mounting, proceed with the following steps.
Step 1:
The ATS enclosure door is hinge mounted with remov-
able hinge pins. To simplify the mounting procedure and
avoid damaging the door-mounted logic panel, it is
strongly suggested that the door be carefully removed
and put it in a safe place until mounting is complete. To
remove the door, open the door and disconnect the con-
nectors at the back of the ATC-300+ logic panel.
Remove the wire ties securing the harness to the inside
of the door. Carefully remove the hinge pins then the
door from the enclosure.
Step 2:
Install the required upper and lower mounting bolt
anchors and the two upper mounting bolts in the mount-
ing surface.
Step 3:
Gently lift the enclosure and guide the teardrop holes in
the upper mounting flange over the upper mounting
bolts. Do not completely tighten the bolts at this time.
Step 4:
While still supporting the enclosure, install the two
lower mounting bolts in the lower mounting flange.
Again, do not completely tighten the bolts at this time.
Use shims, if required, to prevent deformation of the
enclosure if the mounting surface is distorted.
Step 5:
Tighten all four mounting bolts after any required shim-
ming is completed.
ATC-300
Electrical
ase
ase
Source 1
Source 2
Available
Available
Connected
Connected
Load
Unit Status
Alarm
Reset
Engine
Test
Lamp
Test
Help
Step
Enter
Bypass
TDNE / TDEN
Figure 11.Typical Mounting of the ATS to a Mounting Surface.
Step 6:
Double check to ensure that all packing and shipping
materials have been removed.