Section-1
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1.5.1 PREPARATION FOR THE INPUT CABLING
Before proceeding read the chapter
ELECTRICAL INSTALLATION
(Section 1)
and insure before starting connecting the cable to the UPS that:
•
Mains voltage (INPUT VOLTS) and frequency (FREQUENCY) correspond to the values indicated on
the Nameplate of the UPS.
•
Earth connection is performed in accordance with the prescribed IEC Standards or with local
regulations;
•
UPS is connected to the mains through a Low Voltage (LV)-Distribution Board with a separate mains
line (protected with a circuit breaker or fuse) for the UPS.
Provide input fuses and cables according to
Section 2, chapter 2.1.3
or in accordance with the prescribed IEC
Standards or with the local regulations.
The input of the UPS must be fitted with circuit breakers or other kind of protection. The circuit breakers will be
connected between the mains supply and the UPS and will provide additional protection to the UPS in the event of
overloads and short circuits.
1.5.1.1
Mains Supply and Earth connection
To ensure protection of personnel during the installation of UPS make sure that the connections are performed
under the following conditions:
•
No mains voltage is present
•
All Loads are shut down and disconnected
•
The UPS System is shut down and voltage-free
•
The UPS System is fitted in its correct position
•
Maintenance Bypass IA1 is open and in position OFF;
•
Parallel Isolators
IA2
is in position OFF
•
Remove Terminal cover of the UPS
1. Connect first the Earthing wire coming from the Low Voltage-Distribution Board to the terminal "PE".
2. Connect the input power cable coming from the Low Voltage-Distribution Board to the terminals of the
UPS showed in
Section 2, chapter 2.1.2.1
3. Keep the phase rotation in clock-wise sense.
NOTE!
INPUT NEUTRAL IS REQUIRED TO OPERATE THE RECTIFIER.
Under the connection terminal of the UPS there is a cable-fixing rail to ensure that the cables have been fastened
properly.
NOTE:
The
UPS
is provided with facilities for both single feed (one common input cable for rectifier and bypass)
and dual feed (separate input cable for rectifier and bypass).
!
!
NOTE!
