Liebert II manual Voltage ratings and power source configurations

Models: II

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Disconnect Switch—TVSS units must be connected to the load side of the main service discon- nect, or load side of a protected circuit’s disconnecting means.

Interceptor II “SI” Models with an “R” designator in the part number, are equipped with an inter- nal disconnect switch, that can be used to de-energize the unit’s transient surge suppressing com- ponents for servicing.

Table 3 Voltage ratings and power source configurations

Source Configurations

Nominal Operating Voltage

Model Voltage

L-N

L-L

L-G

Code

 

 

L

L

120

N/A

120

120N

 

 

N

 

230

N/A

230

230N

 

 

 

N

 

 

 

 

G

G

 

 

 

 

Single Phase L-N 2W+G

277

N/A

277

277N

 

 

 

 

 

 

N/A

208

208

208L

 

 

N/A

240

240

240L

Single Phase L-L 2W+G

N/A

480

480

480L

 

 

120

208-240

120

120S

 

 

230

400-460

230

230S

Split Phase 3W+G

277

480-554

277

277S

 

 

N/A

208

208

208D

 

 

N/A

240

240

240D

Three Phase Delta 3W+G

N/A

480

480

480D

 

 

120

240

120

240H

 

 

240

480

240

480H

Three Phase Delta Hi-Leg 4 W+G

 

 

 

 

 

 

120

208

120

120Y

 

 

230

400

230

230Y

Three Phase Wye 4W+G

277

480

277

277Y

 

 

 

 

For other voltages or source configurations, consult factory.

Electrical Connections

5

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Liebert II manual Voltage ratings and power source configurations

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.