AUTOMATIC TRANSFER SWITCH
LEHE4651-04
4
STANDARD FEATURES (MSTD PACKAGE)
Feature Function
6/P Momentary Test Switch
J2E/J2N Adj. over/under freq (S1 and S2)
A3 Aux Contact (S2 position)
L1/L2 Source Position LEDs
A4 Aux Contact (S1 position)
L3/L4 Source Available LEDs
Calibrate Volt. and Freq. calibration
LN/P Center-Off Position LCD*
CDT Load/No-Load Exerciser
P1 Source 2 Start Time Delay
DS Auto/Inhibit Switch (> 600A)
R50 In-Phase Monitor
DT Time Delay – Neutral to S1*
S13/P Transfer Commit
DW Time Delay – Neutral to S2*
T Source 1 Stable Time Delay
E Engine Start Contact
U Source 2 Stop Time Delay
EL/P Log of last 16 events and
System Data
VI Voltage Imbalance
K/P S1 and S2 Freq. Indication
W S2 Stable Time Delay
YEN Bypass T and W Time Delays
*Available with Delayed Transition switches only.
OPTIONAL PACKAGES
Exerciser (MEXE) Package, includes:
● STDS Functions
● A1/A1E – S1/S2 Failure aux contact
● A3/A4 – One additional contact each
● CDP – Programmable exerciser
● Q2 – Remote Peak Shave/Load Test
● R16 – Phase Rotation Sensing
Controls (MCON) Package, includes:
● EXES Functions
● Q3 – Remote Inhibit transfer to Emergency
● Q7 – Inhibit Transfer to Normal
● T3/W3 – Elevator Pre-Signal Aux Contacts
● UMD – Universal Motor Load Disconnect
Sensing (MSEN) Package, includes:
● EXES Functions
● Normal Source Over voltage sensing (3 phase)
● Q7 – Inhibit Transfer to Normal
● S12P – Auto/Manual Selector Switch
Special (MSPE) Package, includes:
● CONS Functions
● SENS Functions
● S5P – Manual transfer to Normal Switch
(Replaces S12P)
Switchgear (MPSG) Package, includes:
● SPES Functions
● Additional set of A3/A4 Contacts
● R15 – Load Shed to “Dead Normal” or
● R15D – Load Shed to Neutral Position*
● S12/P – Auto-Manual Selector Switch
Screenshot of ATS operating parameters on Cat
Switchgear HMI.
Combined with the optional Modbus
Communication Card, the PSGS package allows
for integration with Cat Switchgear. This feature
allows ATS operating parameters to be displayed
on the PowerLynx® 3000 HMI as well as on the
optional Remote Monitoring Software. Supply of
this feature set affords real-time monitoring of the
ATS as well as direct control over the following
parameters from the Switchgear HMI:
● Timer Settings
● Pickup/Dropout settings
● Testing Functions
● Alarm functions
● Manual operation