Critical Power
Modifications reserved
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GE_UPS_OPM_SGS_ISG_10K_40K_0US_V070.docx
Installation Guide
SG Series 10-20-30-40 UL S
3.8.4
Power connection dual input utility of
SG Series 10 & 20
Fig. 3.8.4-1 Power connections Dual Input Utility of SG Series 10 & 20
SG Series 10 & 20
:
Max. rating
X1
and
X2
terminals:
3 AWG
(25mm
2
)
Dual Input Configuration Rectifier / Bypass
L1-1
Rectifier Phase A
L1-2
Bypass Phase A
L2-1
Rectifier Phase B
L2-2
Bypass Phase B
L3-1
Rectifier Phase C
L3-2
Bypass Phase C
PE
Ground
N - Bypass
Bypass Neutral
For dual input configurations, a neutral conductor is required from the bypass source only.
The interconnection links
BR1
,
BR2
and
BR3
MUST BE REMOVED
(see
Fig. 3.8.4-2)
.
Output Load
L1
Load Phase A
L2
Load Phase B
L3
Load Phase C
N
Load Neutral
PE
Load Ground
Cable terminations are to the
Rectifier / Bypass Input Terminals
and
Load Output Terminals
as shown
above.
Connect wire to the
Terminals
using appropriate tools and appropriate torque.
Torque specification for
Input / Output
and
DC
power connections on
Terminals
: see Sec
tion 3.8.1
.
NOTE !
This UPS is only designed to operate in a wye-configured electrical system with a
solidly grounded neutral.
If the UPS is equipped with an input transformer, the secondary of the transformer
must be wye-configured with neutral solidly grounded.
S
G
T
5
0
0
0
_
0
1
0
-0
2
0
_
U
P
S
c
o
n
n
e
c
ti
o
n
s
e
p
a
ra
te
_
0
1
US
L3
L1
L2
2- IN
PU
T BYPASS
L1-2
L2-2
L3-2
X2
N
L1-1
1 - INP
UT
LOAD
PE
L3-1
L2-1
N - Bypass
L2
L1
L3
R
EC
TIFIE
R
X1
PE
