GE Industrial Solutions SG Series 100 – 120 – 150 kVA Installation Guide - Manual (Page 24)

3.8.3 Power connection dual input utility
LOAD
SGT
500
0_1
00-
150
_U
PS c
onne
cti
on
sepa
ra
te_G
E_01
US
1 - INPUT RECTIFIER
2 - INPUT BYPASS
L1-2 L2-2 L3-2
PE
PE
L3-1
L2-1
L1-1
N - Byp
ass
L1
N
L2
L3
Fig. 3.8.3-1 Power connections Dual Input Utility
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. 3.8.3-2).
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 Lugs and Load Output Lugs as shown above.
Connect wire to the Lugs using appropriate tools and appropriate torque.
Torque specification for Input/Output and DC power connections on Bus Bars: 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 24/37
OPM_SGS_ISG_M10_M15_0US_V040.doc Installation Guide SG Series 100 –120 – 150 kVA