Liebert II manual Typical parallel connections with internal rotary disconnect

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Figure 2 Typical parallel connections (without internal rotary disconnect)

Ground

Phases

Neutral

To

Protected

Loads

Liebert

Surge

Protective

Device

Protected

Panel

Wire should be less than 5 feet and straight as

possible

Figure 3 Typical parallel connections (with internal rotary disconnect)

Ground

Phases

Neutral

To

Protected

Loads

Liebert

Surge

Protective

Device

Protected

Panel

Wire should be less than 5 feet and straight as

possible

6Electrical Connections

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Contents Power Protection InterceptorPage Table of Contents Figures Introduction Handling Considerations Door Closing AdjustmentsUnpacking and Preliminary Inspection StorageAll voltage Electrical Connections Voltage Ratings and Power Source ConfigurationsSuggested wire and breaker size Parallel Connection see Figures 2Voltage ratings and power source configurations Typical parallel connections with internal rotary disconnect System Grounding and Bonding Monitoring features OperationOperation Corrective Maintenance TroubleshootingService Preventive Maintenance-Inspection and CleaningLimited Warranty GeneralItems Not Covered By Warranty Interceptor Transient Voltage Surge Suppressor Company Behind the Products

II specifications

Liebert II is a high-performance precision cooling system designed specifically for mission-critical applications, ensuring that data center facilities maintain optimal temperatures for sensitive equipment. As part of Emerson's extensive line of cooling solutions, the Liebert II is particularly valued for its reliability, efficiency, and adaptability.

One of the standout features of the Liebert II is its sophisticated cooling technology, which incorporates both chilled water and air-cooled systems. This dual capability allows it to operate effectively in a variety of environments, whether in a small server room or a large data center. The unit is engineered to deliver consistent cooling across different loads, catering to fluctuating demands characteristic of modern IT environments.

In terms of performance, the Liebert II boasts variable speed fans that adjust to the cooling requirements in real-time, thus maximizing energy efficiency. This feature not only reduces operational costs but also minimizes the carbon footprint of the facility. Furthermore, the system is designed with advanced electronic controls that offer precise temperature management, allowing for rapid response to any changes in operating conditions.

The Liebert II also includes state-of-the-art monitoring and control features. It supports integration with advanced Building Management Systems (BMS), providing operators with the tools to oversee performance metrics, detect potential issues before they escalate, and implement energy-saving strategies. This level of operational visibility is crucial for maintaining uptime in critical environments.

Another significant characteristic of the Liebert II is its modular design, which simplifies maintenance and scalability. Facilities can easily upgrade or expand the system as needs evolve, ensuring that the cooling solution can keep pace with technological advancements and increased loads. The design also promotes ease of access for service technicians, minimizing downtime during maintenance activities.

Finally, noise reduction is an important aspect of the Liebert II’s design. The system operates quietly, making it suitable for environments where noise levels must be kept at a minimum, such as offices adjacent to IT spaces.

In summary, the Liebert II stands out as a top choice for ensuring reliable precision cooling in data centers, thanks to its advanced technology, energy efficiency, modular design, and operational flexibility. These attributes position it as an essential component in the infrastructure of any modern facility relying on high-performance computing.