Electrical Installation - ABB PowerWave 33 Series 3 User Manual

4.2 Electrical installation

The electrical installation procedure is described in the following text.
To ensure correct operation of the UPS, the voltage Total Harmonic Distortion (THDu) of the mains shall
not exceed the values according to Standard IEC 61000-2-2. In case of exceeding of the indicated
values, please contact the manufacturer.
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 INSTRUCTIONS IN THIS USER MANUAL HAVE TO BE FOLLOWED
ALWAYS IN ORDER TO AVOID INJURIES FROM ELECTRICAL SHOCK.
WARNING!
ALL THE OPERATIONS DESCRIBED IN THIS MANUAL MUST BE
PERFORMED BY CERTIFIED ELECTRICIANS OR BY QUALIFIED INTERNAL
PERSONNEL.
DO NOT OPERATE IF WATER OR MOISTURE IS PRESENT.
BY OPENING OR REMOVING THE UPS COVERS YOU RUN THE RISK OF
EXPOSURE TO DANGEROUS VOLTAGES.
PHYSICAL INJURY OR DEATH MAY FOLLOW, OR DAMAGE MAY OCCUR TO
WARNING!
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 appropriate
wiring and with fuse protection in accordance with the prescribed local standards or with the local regulations/law.
Alternatively refer to the suggested appropriate wiring and fuse protection in the next subsections 4.3 and 4.4.
The UPS unit has the following power connections:
Rectifier input: three-phase (1-L1, 1-L2, 1-L3)
Bypass input :three-phase (2-L1, 2-L2, 2-L3)
Neutral: (N) The Neutral connection at UPS input (upstream) is mandatory.
Load output : three-phase (3-L1, 3-L2, 3-L3)
Battery: (+) and (-) Note: The battery (-) is at the same potential and is the same connection point as N.
Protective earth (PE)
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 a 4-pole switch for another reason, you have to be aware that, when open, the
system - UPS and all downstream equipment - are floating against the PE.
IMPORTANT
NOTE
Modifications reserved
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Figure 11: Input neutral