2.1.4Cable Connections

Electrical Connections

2.1.4Cable Connections

The rectifier input, bypass and output are easily accessible from the front of the unit for installation. All require lug type terminations. They are connected to busbars on the front side of the Liebert NX and below the circuit breaker, as shown in Figure 4. These busbars are accessible when the front side panel is removed. Busbars to connect external batteries are accessible from the front of the UPS.

NOTE

External connection access requires removal of a protective panel on the lower front of the UPS.

Figure 4 Input and output busbars

Liebert NX 40-120kVA Connections

Battery Input

Connections

Rectifier Input Busbars (Phases are indicated by

letters below the

bars)

Figure 4 Input and output busbarsLiebert NX 40-120kVA ConnectionsLiebert NX 160-200kVA Connections Bypass Input Busbars (Phases are indicated by letters below the bars)

Output Busbars (Phases are indicated by letters below the bars)

Ground

Busbar

Liebert NX 160-200kVA Connections

Battery Input

Connections

Rectifier Input Busbars (Phases are indicated by letters below the bars)

NOTE

Output Busbars (Phases are indicated by letters below the bars)

Ground

Busbar

Bypass Input Busbars (Phases are indicated by letters below the bars)

There is no battery fuse in the UPS; the battery cabinet must include a circuit breaker to cut off the current in case of short circuit. Refer to Table 8 for current ratings.

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Emerson 480V, 60HZ user manual Liebert NX 40-120kVAConnections, Liebert NX 160-200kVAConnections, 2.1.4Cable Connections
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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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