IB140024EN
For more information visit: www.eaton.com
Instruction Booklet
Effective: October 2014
Page
13
ATC-300/900 40-400A (480/600Vac)
3-Postion Contactor Based Transfer Switch
32D.
In-Phase with Default to Time Delay Neutral
This feature provides an in-phase transfer with a default
to a time delay neutral transfer which ensures that the
ATS will complete a transfer whether or not the two live
sources can synchronize. When in-phase with default to
time delay in neutral is set and source synchronization
does not occur in the specified amount of time, the trans-
fer will default to a time delay in neutral transfer and the
Alarm relay will energize and the failure will be logged
into the Transfer History as either "Sync Fail - Freq" or
"Sync Fail - Phase" depending on whether the frequency
difference or the phase difference was excessive. This
option allows the user to configure the switch in the field
to be In-Phase only, Time Delay Neutral only, or In-Phase
with default to TDN (factory setting).
38.
Stainless Steel Logic Cover
38A.
Stainless Steel Cover for Device Panel
Provides an added level of security by providing a pad
lockable stainless steel cover for use with standard trans-
fer switch device panel. The cover is designed for NEMA
1, 3R, 4X, and 12 applications.
38B.
Stainless Steel Cover for Controller
Provides an added level of security by providing a pad
lockable stainless steel cover for use with standard trans-
fer switch logic controllers and/or associated device pan-
els. These covers function with Eaton’s ATC series logic
controllers and device panels. The covers are designed
for NEMA 1, 3R, 4X, and 12 applications.
41.
Space Heater With Thermostat
This feature provides a space heater and non-adjustable
thermostat. External control power is not required.
41A.
Space Heater With Thermostat - 100 Watt
This feature provides a 100 watt (W) space heater with a
non-adjustable thermostat.
49B.
Sensing Isolation Transformer (Up to 600 VAC only)
This feature provides 3-phase, 4-wire for Source-1 and
Source-2 sensing input on ATC controller for a high resis-
tance grounded delta system.
51D1. 50kA CVX Surge Device
This feature gives protection for surge current capacity
rating 50kA, up to 480VAC by providing a low imped-
ance surge path to ground while supporting rated volt-
age. It provides LED indication.
51F1. 100kA CVX Surge Device
This feature gives protection for surge current capacity
rating 100kA, up to 480VAC by providing a low imped-
ance surge path to ground while supporting rated volt-
age. It provides LED indication.
3.6 Enclosure
The rugged steel ATS enclosure is supplied with three door
hinges, regardless of enclosure size. They ensure proper support
of the door and door mounted devices (Figure 9). The hinges
have removable hinge pins to facilitate door removal. Certain
procedures, such as switch mounting, are simplified with the
door removed. The doors are supplied as standard with pad-lock-
able latches.
Figure 9. Typical Type 1 Enclosure (Door Closed).
The door is used to mount a variety of lights, switches, and
push-buttons, depending upon the options required for a particu-
lar ATS. All lights and switches are mounted in the plastic door-
mounted panel.
