GE Industrial Solutions SG Series 10 – 20 – 30 – 40 kVA Installation Guide - Manual (Page 29)

3.8.4 Power connection dual input utility of SG Series 10 & 20 kVA
SG
T
5
00
0
_0
10
-0
20
_
U
PS
c
o
nnec
tion
s
eparate_01U
S
L3
L1
L2
2- IN
PU
T
BYPASS
L1-2
L2-2
L3-2
X2
N
L1-1
1 -
IN
PU
T
L
O
A
D
PE
L3-1
L2-1
N - Bypass
L2
L1
L3
R
ECTIFIER
X1
PE
Fig. 3.8.4-1 Power connections Dual Input Utility of SG Series 10 & 20 kVA
SG Series 10 & 20 kVA: 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 N - Bypass Bypass Neutral Ground
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 PE Load Neutral 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 Section 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.
Modifications reserved Page 29/45
OPM_SGS_ISG_10K_40K_0US_V040.doc Installation Guide SG Series 10 –20 – 30 - 40 kVA