Alternatively, the 10 kVA UPS system can also be connected via a multi-wire rubber-sheathed cable.

5.4Mains Connection

5.4.1Preparation for the three-phase mains connection

Before connection work is performed on the UPS, make sure that:

♦The values of the nominal voltage (supply) and frequency match those on the nameplate of the UPS.

♦The earth connection matches the prescribed IEC standards or the local regulations,

♦The UPS can be connected to the electrical mains via a separate supply line equipped with fuses in the supply- side MI distribution.

♦Back-up fuses or line safety switches are used that correspond to the values listed in chapter 5.2.2.

♦The connection cable from the back-up fuse to the UPS is configured with a minimum cross-section acc. to chapter 5.2.2 “Connection Cross-Sections and Fuse Protection”.

The UPS can be live, and the voltage can be dangerous. The unit may only be installed and if necessary opened by trained and qualified personnel. Repairs may only be carried out by qualified customer service staff!

5.4.2Connection of the Three-Phase Input Mains Voltage

In order to ensure the safety of personnel during installation work, make sure that the connections are made under the following conditions:

♦No mains voltage present.

♦The loads are switched off.

♦The PROTECT 1. is switched off (display completely blank).

To disconnect the PROTECT 1, carry out the following steps as well:

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