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1.2.3 Single Line Diagram
During normal operation,
the utility power (Main input) is supplied to the UPS rectifier. The rectifier converts the AC
power to DC that is supplied to the inverter. The inverter converts the DC voltage to three-phase regulated AC
voltage, which is supplied to the attached load.
During power failure conditions, the inverter is supplied by the stored energy in the battery system, and the load is
powered continuously with no interruption.
The Galaxy 3000 UPS is designed for internal operation of 208 VAC input and output. When different input and/or
output voltages are specified, transformers (either internal to the standard cabinet, or external to the micro or
standard cabinet) provide step-up/down functions as required.
Additional (extended life) batteries, external maintenance bypass switches, and/or output distribution panel boards
may be contained in auxiliary cabinets similar in design to the Galaxy 3000 cabinet, or may be contained in third
party cabinets or wall mounted units.
Figure 1-4: Galaxy 3000 UPS System - Single Line Diagram.
1.3 Preparation for Storage
If the equipment is to be stored prior to installation, it should be stored in a cool, dry, well-ventilated location that is
protected against rain, splashing water, chemical agents, etc. The equipment should be covered with a tarpaulin or
plastic wrapper to protect it against dust, dirt, paint, or other foreign materials. See the section of this manual titled
"Specifications" for recommended storage environmental conditions.
NOTE
Batteries should be stored no longer than three (3) months at
25° C (77° F) or lower prior to recharging. Exceeding the
recommended ambient storage temperature will reduce battery
back-up time and may adversely affect battery life.
Galaxy 3000 10-30kVA
Introduction1 — 6
86-172010-00 C05
GALAXY 3000 UPS SYSTEM W/OPTIONS
SINGLE LINE DIAGRAM
OPTIONAL
MAINTENANCE
BYPASS
INPUT
208Y/120VAC
MAINTENANCE
BYPASS
INPUT
BYPASS
INPUT
TB3
CB3 (OPTIONAL)
A
B
C
N
G
A
B
C
N
G
A
B
C
N
G
KA2
CONTACTOR
KA1
CONTACTOR
INPUT
STATIC
SWITCH
INPUT
FUSES
BATTERY
STATIC
SWITCH
BATTERY
CHARGER
QF1
BATTERY
CIRCUIT
BREAKER
INTERNAL BATTERIES
(240VDC NOMINAL)
COMMUNICATION
CONNECTIONS
(SEE SCHEMATIC)
DRY CONTACT I/O STD.
SNMP
RS232
RS485
SR1
INTERNAL
MAINTENANCE BYPASS
(ROTARY SWITCH)
CONTROL
CONNECTIONS
(SEE SCHEMATIC)
TB4
(OPTIONAL)
OUTPUT
TRANSFORMER
(OPTIONAL)
WRAP-AROUND
MAINTENANCE
BYPASS
(OPTIONAL)
24 OR 42
POLE
DISTRIBUTION
TO
CRITICAL
LOAD
OUTPUT
TB2
Q3BP
T2 (AUTO)
CB2
CB1
KA
KB
78910
1234
A
B
C
N
G
Q5N
PFC
BOOST
RECTIFIER
INVERTER
OUTPUT
FUSES
OUTPUT
STATIC
SWITCH
BYPASS
STATIC
SWITCH
OPTIONAL
INPUT
DELTA/ZIG-ZAG
TRANSFORMER
UPS CABINET
5
MAIN
INPUT
TB1
OPTIONAL
BYPASS
INPUT
208Y/120VAC
MAIN
INPUT
208Y/120VAC
ON MBS REPO
ON MBS REPO
NOTE: 42 Pole Distribution
will be in a separate cabinet.