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IB140015EN
Instructional Booklet
Page
14
Effective: August 2014
ATC-900 Magnum Tranfer Switch O & M Manual
Figure 17. ATC-900.
3.5 Neutrals
All 2-pole and 3-pole transfer switches are equipped with 100%
rated neutral connections (Figures 18 and 19). Different lug con-
figurations are available (See Option 21A).
Figure 18. Neutral SE with Ground Fault.
Figure 19. Solid Neutral.
3.6 Features
Switch options, which are not part of the logic scheme, are avail-
able to meet a variety of other application requirements. Options
are numbered with an associated description. More detailed selec-
tions, which must be made within a specific option number, are
identified by letters. For available options associated with the
logic scheme, refer to the specific logic document associated with
the type of logic selected.
The ATC-900 has many features that are available to the user.
These features are standard and are available. Appendix A of the
ATC-900 IB, has a list of all of the features including any acro-
nyms used along with a brief description. The feature numbers
corresponds to the internal codes and some of these numbers may
be on the product drawings. Also see Table 5 "ATC-900 Fea-
tures" for a compact list. Table 5 also includes an Inputs/Output
full list with Appendix B showing the I/O descriptions.
Some of the features will have to be hard coded into a certain I/O
position which cannot be changed by the user. An example of this
would be Service Entrance; the Go To Neutral would be a fixed
input. The programmable I/Os are covered in Section 5. The only
item that is optional for the transfer switch is the closed transition
optional feature. The closed transition is covered in section 1.5.3
of the ATC-900 IB
Load Connections
Source Connections
Ground Connections
Neutral Bond
NOTICE
OPTIONS ARE UL LISTED, EXCEPT AS NOTED, WHEN SUPPLIED ON
UL LISTED SWITCHES. IF AN OPTION IS SELECTED WHICH IS NOT
UL LISTED, THE SWITCH WILL NOT HAVE A UL LABEL.
NOTICE
NOT ALL OPTIONS ARE AVAILABLE FOR ALL TRANSFER SWITCH
CONFIGURATIONS. IF IN DOUBT, CHECK PRICE LIST 29-920 FOR
THE AVAILABILITY OF OPTIONS FOR A SPECIFIC TRANSFER
SWITCH DESIGN. THE OPTION NUMBERS USED HERE CORRE-
SPOND TO THE NUMBERS USED IN THE PRICE LIST.
Load
Connections
Source
Connections
Ground
Connections
