GE Industrial Solutions SG Series 50 & 80 kVA Installation Guide - Manual (Page 24)

3.8.2 Power connection with common input utility
BYPASS
RECTIFIER
1 -
&
INPUT
SGT5000_0
50-
080_UPS
conne
c
ti
o
n
co
mmon_02
US
OF F
ON
ON
OF
F
X1
LOAD
L1-1
L2-1
L3-1
PE
N
L1
L2
L3
N
PE
Fig. 3.8.2-1 Power connections Common Input Utility
SG Series 50 & 80 kVA Max. rating X1 terminals: 4/0 AWG (95mm 2 )
Common Input Rectifier / Bypass
L1-1 Rectifier + Bypass Phase A
L2-1 Rectifier + Bypass Phase B
L3-1 Rectifier + Bypass Phase C
N PE Neutral Ground
Output Load
L1 Load Phase A L2 Load Phase B L3 Load Phase C
N PE Load Neutral Load Ground
The interconnection links BR1, BR2 and BR3 MUST REMAIN CONNECTED.
Cable terminations are to the Rectifier Input Terminals and 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 24/38
OPM_SGS_ISG_50K_80K_0US_V040.doc Installation Guide SG Series 50 & 80 kVA