4.0OPTIONS

Options

4.0OPTIONS

4.1Load Bus Synchronization

The Load Bus Synchronizer (LBS) keeps the output of two independent UPS systems or parallel UPS systems in synchronization even when the systems are operating in different modes and even when either or both systems are operating on batteries. When the LBS is used, one UPS system is desig- nated as master, the other as slave.

The LBS option is typically used with dual-corded equipment or with either the Liebert Smart- Switch™ or Liebert Static Transfer Switch™ (STS) for single-corded equipment.

4.1.1Performance Requirements

The LBS operates under the following conditions:

•Both master and slave are on inverter

(either system may be on inverter through the rectifier or on inverter through the batteries)

•Master on inverter and slave on bypass

•Master on bypass and slave on inverter

•Master and slave on bypass IF the bypass source is the same for both systems

4.1.2LBS Cable and Settings

For Liebert NX-to-Liebert NX dual bus configuration, only one optional LBS cable is required, the built-in LBS will operate normally without an extra LBS control box or interface box. The LBS port is X4 on the parallel board (M3). The parallel board is on the interior of the Liebert NX, above and left of the power electronics; see Figure 23.

An optional, 9-pin LBS cable is used to connect two UPS systems through each system’s DB9 port on its parallel board. For two parallel systems, the LBS cable can be mounted between any two units belonging to different parallel systems. For information about the LBS kit or to order the optional equipment, see your local Liebert representative.

The LBS cable is connected as illustrated in Figures 13 and 14.

Figure 13 Load Bus Synchronization cable connection in single module systems

Parallel Board

 

X3

X4

 

X2-1

X2-2

X1-1

X1-2

LBS Cable

Parallel Board

X4

 

X2-1

X2-2

X1-1

X1-2

The parallel board is on the interior of the Liebert NX, above and left of the power electronics; see Figure 23

UPS Module or

UPS Module or

System #1

System #2

26

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Emerson 60HZ, 480V 4.1Load Bus Synchronization, 4.0OPTIONS, 4.1.1Performance Requirements, 4.1.2LBS Cable and Settings
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60HZ, 480V specifications

The Emerson 40-120KVA UPS is a high-performing uninterruptible power supply designed to ensure the reliability and continuity of critical operations across various industries. This UPS operates at 480VAC and 60Hz, making it suitable for environments where high-power demands are common.

One of the standout features of this UPS system is its modular design, which allows for easy scalability. Organizations can expand their power capacity as their needs grow, making the Emerson 40-120KVA UPS a future-proof investment. The system operates with high efficiency, minimizing energy consumption and operational costs. This is vital for data centers and industrial applications where energy management is increasingly important.

The Emerson UPS incorporates advanced digital signal processing technology, delivering real-time monitoring and control. This enhances the overall performance and reliability of the system, providing seamless power protection against voltage fluctuations, surges, and interruptions. With a total harmonic distortion of less than 5%, the UPS ensures a clean and stable power output, preserving the integrity of sensitive electronic equipment.

Another noteworthy characteristic of the Emerson 40-120KVA is its redundancy features. The system supports N+1 redundancy, allowing for one extra module to ensure uninterrupted service in case of a failure. This design offers peace of mind for critical applications, ensuring that there is no single point of failure.

User-friendliness is also a significant aspect of the Emerson UPS. The intuitive graphical user interface simplifies monitoring and management, allowing operators to assess system performance and status at a glance. Additionally, remote monitoring capabilities enable real-time tracking of system health and performance from anywhere, providing flexibility and oversight for facility managers.

The Emerson 40-120KVA UPS also meets stringent safety and compliance standards, ensuring reliable operation in demanding environments. Its robust design is suitable for a variety of applications, including information technology, telecommunications, and industrial processes. Overall, the Emerson 40-120KVA UPS stands out as a reliable, efficient, and versatile solution for businesses aiming to safeguard their critical power supply against any disruption.
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