GE Industrial Solutions LP 33 Series 50 & 60 kVA Installation Guide - Manual (Page 22)

Modifications reserved Page 22/42
OPM_LPS_3UI_50K_60K_0US_V010.doc Installation Guide LP 33 Series 50-60 kVA
3.7 ELECTRICAL WIRING
WARNING !
UPS installation and connection must be performed by QUALIFIED SERVICE
PERSONNEL only.
It is the responsibility of the installation technician to ensure that all local and
national electric codes are adhered to.
3.7.1 Utility input connection
WARNING !
Ensure that the AC and DC external isolators are OFF and locked out to prevent their
inadvertent operation.
Do not apply power to the equipment prior to the commissioning by a qualified service
engineer.
Before any other input connection, connect and check the grounding wire.
The UPS has equipped with input terminations for the Rectifier and Bypass.
The standard unit comes with common input terminals for rectifier and Bypass. Separate input terminals
for bypass is optional.
Common supply for Input Rectifier & Bypass
Fig. 3.7.1-1 Common Input Rectifier & Bypass
The same power source is used for both
Bypass Supply and Rectifier Input (input F1).
Keep note that when the Utility Fuses are
opened there is a supply failure to the Rectifier
as well as to the Bypass and Manual Bypass.
Dual input Rectifier & Bypass (option)
Fig. 3.7.1-2 Dual Input Rectifier & Bypass (option)
The Bypass and Rectifier inputs are to be
powered from different Utility supplies (F2 and
F3 inputs).
In this case, when the Rectifier Input Fuses are
opened, the Bypass and the Manual Bypass
are supplied by the other source.