Electrical Wiring; Utility Input Connection - GE lp33 20 series Installation Manual

4.7

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.

4.7.1 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 availability of input terminations for the Rectifier and Bypass.
The unit may be powered from a common input source or dual input sources (option).
Fig. 4.7.1-1 Common Input Rectifier & Bypass
Fig. 4.7.1-2 Dual Input Rectifier & Bypass (option)
Modifications reserved
GE_UPS_ISG_LPS_3UL_20K_30K_2US_V010.docx
Critical Power
Common input Rectifier & Bypass
Dual input Rectifier & Bypass (option)
The same power source is to be
used for both Bypass Supply and
Rectifier Input (input F1).
Bear in mind that when the Utility
Fuses are opened there is a
supply failure to the Rectifier as
well as to the Bypass and Manual
Bypass.
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.
Installation Guide LP33 Series 20 & 30 UL S2
Page 21/43