Emerson Liebert GXT4 Bedienungsanleitung PDF herunterladen (Seite 14)

Product Description

Liebert

GXT4

™

DC-to-DC Converter

The DC-to-DC converter raises the DC voltage from the battery to the optimum operating voltage for

the inverter. This allows the inverter to operate continuously at its optimum efficiency and voltage,

increasing reliability.

Battery

The Liebert GXT4 utilizes valve-regulated, nonspillable, lead acid batteries. To maintain battery

design life, operate the Liebert GXT4 in an ambient temperature of 0°C to 25°C (32°F to 77°F).

Optional external battery cabinets are available to extend battery run times.

Dynamic Bypass

The Liebert GXT4 provides an alternate path for mains power to the connected loads in the unlikely

event of a UPS malfunction. Should the Liebert GXT4 have an overload, overtemperature, or UPS

failure condition, the UPS automatically transfers the connected loads to bypass.

1.5 Operating Mode

The UPS operation modes include the following: Mains (AC) Mode, Bypass Mode, Battery Mode,

Battery Recharge Mode, Active ECO Mode and Frequency Converter Mode.

Refer to 3.0 - Operation and Display Panel for details about the operating mode indicators and

control buttons.

1.5.1 Mains Mode

During Mains Mode, the mains provides input power to the Liebert GXT4. The filters, PFC circuit

and inverter process this power to provide high-quality sine wave power to connected loads. The UPS

maintains the batteries in a fully charged state.

1.5.2 Manual Bypass Mode

Manual Bypass Mode occurs when the unit is manually placed in internal bypass by navigating the

LCD display menu to select 3 Control > 1 Turn On & Off > Turn UPS Bypass. Bypass operation is

indicated by an audible alarm and illuminated amber bypass indicator. (If other indicators are

illuminated, refer to 7.0 - Troubleshooting). During Bypass Mode, mains power bypasses the

inverter and provides energy to the connected load.

NOTICE

Risk of loss of power to the connected load. Can cause equipment damage.

Turning Off the UPS in Bypass Mode will result in loss of output power to the connected load.

NOTE

The bypass power path does not protect the connected loads from disturbances on the mains.

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Emerson Liebert GXT4 Bedienungsanleitung Seite 14