Liebert NX Operating Modes, UPS operating modes

Operating Instructions

9.0OPERATING INSTRUCTIONS

9.1Liebert NX Operating Modes

The Liebert NX can operate in any of four modes, as shown in Table 20. This section provides instructions on switching between modes, resetting the UPS, switching the inverter On and Off and performing other operations.

Table 20 UPS operating modes

	Circuit Breaker
Operating Mode	State	Description

	CB1:ON	The UPS is powering the load.
Normal	CB2:ON
Operation	CB3:OFF
	CB5:ON
	CB1:OFF	The UPS is shut down but the load is connected to utility power via the
On Maintenance	CB2:OFF	Maintenance Bypass Supply line.
Bypass	CB3:ON	NOTE: The load is not protected against disturbances in AC input power in
	CB5:OFF	this mode.
	CB1:ON	No load power is supplied by the UPS. The load is connected to utility power
On Test	CB2:ON	via the Maintenance Bypass Supply line.
On Test	CB3:ON	NOTE: The load is not protected against disturbances in AC input power in
	CB3:ON
	CB5:OFF	this mode.

	CB1:ON or OFF	The load power is supplied through the static bypass line. This may be
On Static Bypass	CB2:ON	considered as a temporary mode during load transfers between inverter and
On Static Bypass	CB3:OFF	maintenance bypass or supply under abnormal operating conditions.
	CB5:ON

NOTE

1. The user controls and indicators mentioned in these procedures are identified in 8.0 - Operator Control and Display Panel.

2.The audible alarm may sound at various points during these procedures. It can be canceled at any time by pressing the SILENCE ON/OFF push button.

NOTE

This section refers to some modes and conditions that are set or adjusted using proprietary service software. To take advantage of all the available features for the Liebert NX, the unit must be commissioned by a Liebert factory-trained service engineer.

480V specifications

The Emerson 480V power systems play a critical role in modern industrial applications, providing reliable and efficient power distribution. These systems are designed for facilities that require robust performance and operational efficiency while adhering to safety regulations. With voltage ratings at 480V, they cater primarily to industries such as manufacturing, data centers, and commercial buildings.

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The Emerson 480V systems also incorporate advanced technologies for improved performance and safety. One key technology is the use of smart grid solutions. This enables real-time monitoring, diagnostics, and control, allowing facility managers to optimize energy consumption and reduce operational costs. Furthermore, these systems often include integrated protection devices that enhance safety measures by minimizing the risk of electrical faults, overloads, or short circuits.

Energy efficiency is another characteristic that distinguishes Emerson 480V systems from traditional alternatives. With advanced power management features, these systems effectively reduce energy waste and lower electricity bills. Emerson’s commitment to sustainability is evident in its designs, which aim to minimize environmental impact through energy-efficient technologies.

The build quality of Emerson 480V systems is also noteworthy. They are designed to withstand harsh industrial environments and are constructed with high-grade materials that promote longevity and reliability. The modular design allows for easy maintenance and repair, which further extends the lifespan of the system.

Additionally, Emerson 480V systems are equipped with user-friendly interfaces that facilitate ease of operation. This ensures that operators can efficiently manage and control power distribution without extensive training. The combination of performance, scalability, safety features, and user-centric design makes Emerson 480V systems an ideal choice for businesses looking to enhance their electrical infrastructure.

In summary, Emerson 480V power systems are a leading solution for industrial power distribution, characterized by their scalability, smart technology integration, energy efficiency, robust build quality, and user-friendly operation. These attributes make them a valuable investment for any organization aiming to improve its electrical management and operational performance.

Emerson 480V user manual Liebert NX Operating Modes, UPS operating modes

Models: 480V

9.1Liebert NX Operating Modes

Table 20 UPS operating modes

On Test

On Static Bypass

480V specifications