GE_UPS_OPM_SGS_ISG_10K_40K_0US_V070.docx
Installation Guide SG Series 10-20-30-40 UL S
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
NOTE !
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 available input terminations for the Rectifier and Bypass.
The unit may be powered from a common input source or dual input sources if desired.
Dual Input Configuration Rectifier & Bypass (recommended)
The Bypass and Rectifier inputs are to be powered from different Utility supplies (F1 and F2 inputs).
In this case, when the Rectifier Input Fuses are opened, the Bypass and the Manual Bypass are
supplied by the other source.
In this case, REMOVE the interconnection links BR1, BR2 and BR3 on the input
terminals or bus bars.
See Fig. 3.8.4-2 for SG Series 10 & 20 and Fig. 3.8.5-2 for SG Series 30 & 40.
Common input Rectifier & Bypass
The same power source is to be used for both Bypass Supply and Rectifier Input (input F3). 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.
In this case, the interconnection links BR1, BR2 and BR3 on the input terminals or
bus bars MUST REMAIN CONNECTED.
See Fig. 3.8.4-2 for SG Series 10 & 20 and Fig. 3.8.5-2 for SG Series 30 & 40.
Dual Input Configuration Rectifier & Bypass
Common input Rectifier & Bypass
Fig. 3.7.1-1 Dual Input Configuration Rectifier & Bypass
Fig. 3.7.1-2 Common Input Rectifier & Bypass
1 = Rectifier
2 = Inverter
3 = Automatic Bypass
4 = Manual Bypass
6 = Load
5 = Utility input
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