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IB140036EN
Instruction Booklet
Page
6
Effective: October 2014
O&M Manual for 40-1200A (480/600 Vac) ATC-900 3-Position,
Open/Closed Transition Contactor Based Transfer Switch
There are three optional accessory items that also interface to
the ATC-900, the DCT module, the I/O Module, and the Ethernet
Module. See the ATC-900 manual for specific instructions on
these modules. A small description of each follows:
The DCT (Direct Current-Current Transformer) Module is a cur-
rent transformer interface to the ATC-900 allowing current to be
metered along with voltage and frequency that is already inte-
grated into the controller. The DCT Module simply secures to the
ATC-900 back using four #8 x less than 1/2 inch screws. The
ribbon cable then plugs into J14. When equipped with a DCT
module, the ATC-900 serves as a multifunction power meter and
provides multifunction measurement of most electrical parame-
ters including voltage, current, power, frequency, energy, etc.
The meter capabilities is specified as a 1% class energy meter.
The information is displayed on the color display on the front of
the ATC-900. Readings can also be monitored through the RS-
485 modbus on the controller. The DCT is used to measure load
current when selective load shed is enabled. The DCT Module
also has a 24 Vdc input for powering the ATC-900 controller. If
120 VAC and 24 Vdc is supplied to the controller simultane-
ously, then the 120 Vac will be the powering supply.
The I/O Module (Figure 16B) is an extension of the ATC-900 con-
troller's programmable inputs and outputs. Each I/O Module has
four inputs and four outputs. The inputs are DC wetted (50 Volts
at 10 ma) connections for various functional inputs. Up to four
modules can be used with the ATC-900 giving the user up to 20
inputs or 20 outputs (including the controller's standard I/Os).
Depending on the options selected with the transfer switch,
some of the I/Os may be required to be fixed from the factory so
that the user cannot change that particular input or output.
The Ethernet Communications Module is an accessory that oper-
ates as a communicating device in conjunction with a the ATC-
900 via an Ethernet network. The Ethernet Module provides
Ethernet TCP/IP.
Section 2: Receiving, Handling, and
Storage
2.1 Receiving
Every effort is made to ensure that the ATS equipment arrives at
its destination undamaged and ready for installation. Packing is
designed to protect internal components as well as the enclo-
sure. Care should be exercised, however, to protect the equip-
ment from impact at all times. Do not remove the protective
packaging until the equipment is ready for installation.
When the ATS equipment reaches its destination, the customer
should inspect the shipping container for any obvious signs of
rough handling and/or external damage that occurred during
transportation. Record any external and internal damage for
reporting to the transportation carrier and Eaton, once a thorough
inspection is complete. All claims should be as specific as possi-
ble and include the catalog and General Order numbers.
A shipping label affixed to the shipping container includes a vari-
ety of equipment and customer information, such as General
Order Number and catalog numbers. Make certain that this infor-
mation matches other shipping paper information.
Each transfer switch is packed securely with appropriate ship-
ping materials to prevent damage during shipment. Do not
remove or discard the packing material until the equipment is
ready for installation.
Once the top packaging is removed from the shipment, the
enclosure door can be opened. A plastic bag of documents will
be found in the enclosure, usually attached to the inside of the
enclosure. Important documents, such as test reports, wiring
diagrams, and appropriate instruction leaflets, are enclosed
within the bag and should be filed in a safe place.
2.2 Handling
As previously mentioned, ATS equipment is packaged for forklift
movement. Protect the equipment from impact at all times and
DO NOT double stack.
Once the equipment is at the installation location and ready to be
installed, packaging material can be removed and discarded.
Once the enclosure is unbolted from the wooden pallet, it can be
hand moved to its installation position. Be careful not to damage
the top or bottom enclosure mounting flanges. Refer to Section
4 of this manual for specific installation instructions.
2.3 Storage
Although well packaged, this equipment is not suitable for out-
door storage. The equipment warranty will not be applicable if
there is evidence of outdoor storage. If the equipment is to be
stored indoors for any period of time, it should be stored with its
protective packaging material in place. Protect the equipment at
all times from excessive moisture, construction dirt, corrosive
conditions, and other contaminants.
It is strongly suggested that the package-protected equipment be
stored in a climate-controlled environment with temperatures
from -30 to 85°C (-22 to 185°F) and with a relative humidity of
80% or less. DO NOT, under any circumstance, stack other
equipment on top of a transfer switch equipment enclosure,
whether packaged or not.
