Emerson GXT3-240TBATTCE Manual de usuario descargar pdf (Pagina 15)

Installation

3.3 Neutral Connection

The installation of the UPS does not affect the existing neutral system.

The neutral system may be affected if the UPS is operating with the neutral switched upstream.

3.4 External Protection and Isolating Devices

External devices for the protection of cables and for isolating the UPS external to the UPS must be

installed upstream of the equipment. Select and configure the isolating device according to Table 3.

• Such devices must be either curve C automatic circuit breakers or type GL/GG fuses.

• Disconnecting devices must be provided in building installations and other locations.

This table indicates the protection devices (circuit breakers and fuses) that must be installed for the

protection of both the cables and the equipment.

WARNING

The following label must be displayed on all switching devices installed in the same electrical

system as the UPS, even when they are located at a distance from the area.

ENSURE THAT THE UNINTERRUPTIBLE POWER SYSTEM IS ISOLATED BEFORE

WORKING ON THIS CIRCUIT.

Table 3 External protection device data

Protection Description

Tower Power Rating (Phases In/Out)

10 - (1/1) 10 - (3/1)

Input

Fuse 120 Amps 40 Amps

Breaker 96 Amps 32 Amps

Output

Fuse 90 Amps 90 Amps

Breaker 63 Amps 63 Amps

NOTE

If an external battery cabinet is present it should be located next to the UPS unit.

When such an option is supplied by Liebert it comes complete with protection devices and

correctly-sized cables.

When batteries are sourced from other suppliers, you should contact Customer Support

Technical Service for correct sizing of protection devices and interconnection cables.

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