Section-1
04-3004_S1_OPM_ABB_POWERSCALE_10-50kVA_EN_150113.doc Page 15/20 ABB
Printed in Switzerland – Modifications reserved
1.5 ELECTRICAL INSTALLATION
The customer has to supply the wiring to connect the UPS to the local power source see Section 2, chapter 1.1.
The electrical installation procedure is described in the following text. The installation inspection and initial start up
of the UPS and extra battery cabinet must be carried out by a qualified service personnel such as a licensed
service engineer from the manufacturer or from an agent certified by the manufacturer.
THE INSTRUCTION IN THIS USER MANUAL HAVE ALWAYS TO BE FOLLOWED
IN ORDER TO AVOID INJURIES FROM ELECTRICAL IMPACTS.
ALL THE OPERATIONS IN THIS MANUAL MUST BE PERFORMED BY
CERTIFIED ELECTRICIANS OR BY QUALIFIED INTERNAL PERSONNEL.
DO NOT OPERATE IN CASE OF PRESENCE OF WATER OR MOISTURE.
BY OPENING OR REMOVING THE UPS-COVERS YOU RUN RISK OF
EXPOSURE TO DANGEROUS VOLTAGES
PHYSICAL INJURY OR DEATH MAY FOLLOW, OR DAMAGE MAY OCCUR TO
THE UPS, OR THE LOAD EQUIPMENT IF THESE INSTRUCTIONS ARE
IGNORED.
To ensure correct operation of the UPS and its ancillary equipment it is necessary to provide the mains cables with
appropriate fuse protection. See Section 2, chapter 2.1.3
The UPS unit has the following power connections:
Rectifier (In) : Three-phase (1L1, 1L2, 1L3), Neutral (1N) and protective
earth (PE)
connection for the rectifier input
Bypass (In) : Three-phase (2L1, 2L2, 2L3), Neutral (2N) and protective
earth (PE)
connection for the bypass if used as Dual Feed input
Load (Out) : Three-phase (3L1, 3L2, 3L3), Neutral (3N) and protective
earth (PE)
connection for the load output
External Battery : Plus (+), Common (N), Minus (-) and protective earth (PE)
connection for the external batteries
INPUT NEUTRAL IS REQUIRED TO OPERATE THE RECTIFIER.
In TN-S Systems, no 4-pole input switches or circuit breakers should be used.
If you have to use for other reason a 4-pole switch, you have to be aware that,
when open, the system - UPS and all downstream equipment - are floating
against the PE.
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