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IB140024EN
Instruction Booklet
Page
12
Effective: October 2014
ATC-300/900 40-400A (480/600Vac)
3-Postion Contactor Based Transfer Switch
3.5.2 Optional Features
The following is a list of the optional features for the ATC-300+
Controlled ATS.
All features or combinations of features may not
be available on specific ATSs.
The ATC-900 controller has many
new features compared to the ATC-300+. Many of the ATC-
300+ options are standard in the ATC-900 controller. If the
ATC-900 is used on the switch, please see the ATC-900's
Instruction Booklet for these additional user features.
9B.
Maintenance Selector Switch (MSS)
Marked “OFF”, “ON”. This feature provides selector
switch disconnection of control to transfer thus allowing
testing of the transfer switch control logic circuitry with-
out initiating load transfer. Positioning the MSS in the
“OFF” position isolates the control circuit, permitting man-
ual operation of the transfer switch or testing of logic cir-
cuitry without load transfer. White indication light is lit ON
and display on ATC-300 controller shows “ATS NOT IN
AUTOMATIC” when the switch is in maintenance mode.
14.
Relay Auxiliary Contacts
: This feature provides form “C”
relay auxiliary contacts.
14C. Source 1 Present
: Provides four (4) normally open and four
(4) normally closed contacts. The relay is energized when
Source 1 is available.
14D. Source 2 Present
: Provides four (4) normally open and four
(4) normally closed contacts. The relay is energized when
Source 2 is available.
15.
Switch Position Indication Contact
This feature provides a contact that indicates if the power
switching device is in the “Open” or “Closed position.
15G. Source 1 Position Indication Contact
This feature provides 3 Dry Form “C” contacts that indi-
cate the position of the Source 1 power-switching device.
15H. Source 2 Position Indication Contact
This feature provides 3 Dry Form “C” contacts that indi-
cate the position of the Source 2 power-switching device.
18.
Metering
This feature includes all required external devices (CTs,
shorting blocks, fuses, etc.) for a fully functional metering
system.
18AN.
IQ 250/260 Normal (S1) Only
18AE.
IQ 250/260 Emergency (S2) Only
18AL.
IQ 250/260 Load
18CN.
IQ 110/115 Normal (S1) Only
18CE.
IQ 110/115 Emergency (S2) Only
18CL.
IQ 110/115 Load
18DN.
IQ 130/140/150 Normal (S1) Only
18DE.
IQ 130/140/150 Emergency (S2) Only
18DL.
IQ 130/140/150 Load
18EN.
PXM2250/2260/2270 Normal (S1) Only
18EE.
PXM2250/2260/2270 Emergency (S2) Only
18EL.
PXM2250/2260/2270 Load
18O.
IQ Analyzer Normal (S1) Only
18P.
IQ Analyzer Emergency (S2) Only
18Q.
IQ Analyzer Normal (S1) & Emergency (S2) Switch Select-
able
18V.
IQ Analyzer Load
18R.
IQ DP-4000 Normal (S1) Only
18S.
IQ DP-4000 Emergency (S2) Only
18T.
IQ DP-4000 Normal (S1) & Emergency (S2) Switch Select-
able
18U.
IQ DP-4000 Load
18W. Ammeter
A single ammeter is a true RMS sensing device that dis-
plays single phase current only.
The ammeter can be mounted on Source 1, Source 2, or
load. The meter can also be configured for 1, 2, or 3-phase
sensing by supplying one meter per phase for Source 1,
Source 2, or load. Ammeters for both Source 1 and Source
2 can also be grouped together.
23L. 24 Hour, 7day, 365 Day Programmable Plant Exerciser
This plant exerciser has two channel electronic time
switches with 365-day, 7-day, 24-hour programming. Each
channel can be independently programmed and can provide
up to 400 events. The plant exerciser offers daily, weekly
or annual programming capability with up to 99 separate
holiday periods of any duration and priority. An LCD display
indicates load status, time-of-day, weekday and date.
29G.
Auto/Manual Operation
This feature provides 2-position auto/manual selector
switch marked “Auto/Manual” which permits the selec-
tion of automatic or manual operation. Once the selector
switch is transferred to manual mode, manual transfer
between Normal (S1) Neutral and Emergency (S2) can be
achieved by operating 3-position selector switch marked
“Normal-OFF-Emergency”. White indication light is lit ON
and display on ATC-300+ controller shows “ATS NOT IN
AUTOMATIC” when the switch is in manual mode.
32A. Time Delay Neutral (TDN)
This feature provides a time delay in the transfer switch
Neutral position when both the source one and source two
contacts are open. This delay takes place when the load is
transferred in either direction to prevent excessive in-rush
currents due to out-of-phase switching of large motor
loads. This feature is not available with the Neutral Load
Sense Delay (TDNLD) feature.
