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Section-1

04-3004_S1_OPM_ABB_POWERSCALE_10-50kVA_EN_150113.doc Page 16/20 ABB

Printed in Switzerland – Modifications reserved

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!

ABB PowerScale CABINET B User Manual

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