Operator Input Display - MGE UPS Systems Epsilon STS 200A Installation And User Manual

Epilson STS TM
Front Display Panel
Hard Keys
Input Power
SCR Switch
Soft Keys
Static Transfer Switch (STS) All components within the Epsilon STS™ cabinet that function as a system to
PMM 2 Plus
PMM 2 Ultra
Figure 1-3: Operator Input Display.
L C D G R A P H I C
D I S P L A Y
L E D S T A T U S &
M I M I C D I A G R A M
1 — 6
Comprised of a 4.7" x 3.6" LCD with associated "soft" keys for monitoring status,
alarms, changing certain settings and performing certain operations; an LED "mimic"
diagram display for indicating switch status and power flow; and manual control
pushbuttons for manual transfer functions.
Manual, dedicated keys (pushbuttons) that have a single function.
The Epsilon STS™ is normally connected to two separate, independent sources,
Source S1 and Source S2. Power from each source can be provided by the
electrical utility company, a generator or a UPS.
A set of three pairs of SCR's that function as a three-phase, AC switch for each
source.
Programmable keys (pushbuttons) associated with the LCD, that can be used for
several different functions depending on the displayed screen
transfer the critical load between two independent sources of power using solid-
state SCR switches or bypass to either source using manual bypass switches
A configuration with the Epsilon STS™ and PMM
cabinet is supplied by the output of the STS. Refer to the PMM
00 for more details.
A configuration with the Epsilon STS™ and PMM
formers feed each STS input source upstream of the STS.
secondary output of the PMM
PMM 2 -2 (right cabinet) supplies Source-2 input of the STS cabinet. The output of
the STS connects to the output busbars of the PMM
feeding panelboards or main frame circuit beakers. Refer to the PMM
505004-00 for more details.
NORMAL OPERATION
A 2A B 1A C
0 KW 1 KVA
PF 0.0
Preferred
UPS 1 UPS 2
A-B 503 V A-B 504 V
Synchro
B-C 501 V B-C 503 V
C-A 507 V C-A 508 V
60.0 HZ 60.0 HZ
= 0º
Introduction
2 cabinet. The input of the PMM
2 cabinet. PMM
2 -1 (left cabinet) supplies the Source-1 input and
3A
!
v o l t
RETURN TO
PREFERRED
SOURCE
LIMITS
2
2 manual 86-505004-
2 isolation trans-
The transformer
2 -1 and PMM 2 -2 cabinets,
2 manual 86-
H E L P K E Y
" S O F T " F U N C T I O N
K E Y S
M A I N M E N U K E Y
A L A R M S I L E N C E K E Y
L A M P T E S T K E Y
M A N U A L O P E R A T I O N S
K E Y
M A N U A L C O N T R O L
K E Y E D S W I T C H
86-504004-00 B03