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OPM_SGS_ISG_10K_40K_0US_V010.doc
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Installation
Guide
SG Series
10, 20, 30 & 40 kVA
3.8.4 Power connection separate input utility of
SG Series
10 and 20 kVA
S
G
T
500
0_
01
0-
02
0_
U
P
S
c
onn
ec
tion
s
e
pa
ra
te
_0
1
U
S
L3
L1
L2
2-
IN
PU
T
BYP
ASS
L1-2
L2-2
L3-2
X2
N
L1-1
IN
P
U
T
LO
A
D
PE
L3-1
L2-1
N
L2
L1
L3
RE
CT
IF
IE
R
X1
PE
Fig. 3.8.4-1 Power connections Separate Input Utility of
SG Series
10 and 20 kVA
SG Series
10 and 20 kVA
:
Max.
rating
X1
and
X2
terminals:
3 AWG
(25mm
2
)
Separate Input 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
N
Neutral (Bypass)
PE
Ground
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
Neutral
PE
Ground
The interconnection links
BR1
,
BR2
and
BR3
must be removed
.
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
:
Section 3.8.1
.
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.
