GE Industrial Solutions LP 33 Series 50 & 60 kVA Installation Guide - Manual (Page 29)

Modifications reserved Page 29/42
OPM_LPS_3UI_50K_60K_0US_V010.doc Installation Guide LP 33 Series 50-60 kVA
3.9 ELECTRICAL CONNECTIONS
WARNING !
The connections to and from the UPS must be executed by QUALIFIED PERSONNEL
ONLY.
Refer to the “Safety prescriptions - Installation” described on page 6.
3.9.1 Common input utility
Fig. 3.9.1-1 Common input utility
Common input utility
The UPS delivered in standard version has
common input utility.
Only one input line (F1) supplies both rectifier
and bypass input terminals.
Bear in mind that when the utility fuses are
opened there is a supply failure to the rectifier
as well as to the automatic bypass and manual
bypass.
Fig. 3.9.1-2 Terminals for common input mains
X1 Utility 1 - Input utility connection
L1 = Rectifier + Bypass Phase A
L2 = Rectifier + Bypass Phase B
L3 = Rectifier + Bypass Phase C
N1 = Utility
Neutral GND = Main Ground
X3 Load - Output load connection
L1 = Load Phase L1
L2 = Load Phase L2
L3 = Load Phase L3
N2 = Load Neutral GND = Load Ground
LP 33 Series / 50 kVA 350 MCM Max. rating X1, X3 and X4 terminals:
LP 33 Series / 60 kVA 350 MCM
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.
NOTE !
For UPS correct operation, the input utility phase rotation must be clock-wise.
Inside the UPS, all neutrals N1 and N2 are connected together.
NOTE !
This UPS is designed to operate in a wye-configured electrical system with a solidly
grounded neutral.