Major Components

3.2Panel Board Voltage-Current Board (PBVI)

The PBVI board monitors two panelboards and provides the voltage attenuators for the two panel- board voltages. The two sets of panelboard main breaker CTs are connected to the PBVI board.

Connections for the 18 large branch CTs are located on the PBVI board. The nine CTs on the A side of the board are normally associated with the A-side voltages for power calculations. The B-side CTs are normally associated with the B-side voltages. A cross-configuration tool allows changing that associa- tion for subfeeds.

The 18 large branch CT inputs can also be used to monitor up to three subfeed circuit breakers. This is configured using the Configuration tool (see 5.5 - Using the Configuration Tool). The CTs from the B side of the PBVI are cross-configured to the A side so that the three sub-feeds appear within the A-side panelboard register space. The 18 large branch breakers require CTs with 1A secondary.

! WARNING

Before connecting a large CT to the PBVI board, note the CT MUST have 1A secondary. Connecting a 5A secondary type CT will damage the board and the CT.

To ensure the proper current ratio and accuracy, the CTs should be purchased through Emerson Network Power. See Table 1 for details. Contact your local Emerson Network Power representative or call Liebert Services at 1-800-LIEBERT (1-800-543-2378).

Table 1

CT matrix for the Liebert LDM

 

 

 

 

 

 

 

 

 

Part Number

 

Description

Phase CT

Ground CT

Neutral CT

 

 

 

 

 

528415G1-L

3 pole 100A Subfeed Breaker 5W CT Kit 23" Frame

100:1

100:1

200:1

 

 

 

 

 

528415G2-L

3 pole 125-225A Subfeed Breaker 5W CT Kit 23" Frame

200:1

100:1

500:1

 

 

 

 

 

528415G3-L

3 pole 250-400A Subfeed Breaker 5W CT Kit 23" Frame

500:1

100:1

500:1

 

 

 

 

 

531461G6-L

3 pole 0-100A I-Line & Subfeed Breaker 5W CT Kit 47" Frame

200:1

100:1

200:1

 

 

 

 

 

 

531461G9-L

3 pole 125-225A

I-Line & Subfeed Breaker 5W CT Kit 47" Frame

200:1

100:1

500:1

 

 

 

 

 

 

531461G12-L

3 pole 250-400A

I-Line & Subfeed Breaker 5W CT Kit 47" Frame

500:1

100:1

500:1

 

 

 

 

 

531461G18-L

3 pole 0-225A I-Line Breaker 3W CT Kit 47" Frame

200:1

—

—

 

 

 

 

 

 

531461G19-L

3 pole 250-400A

I-Line Breaker 3W CT Kit 47" Frame

200:1

—

—

 

 

 

 

 

528461G13-L

1 pole 0-100A Branch Breaker CT Kit

100:1

—

—

 

 

 

 

 

528415G14-L

2 pole 0-100A Branch Breaker CT Kit

100:1

—

—

 

 

 

 

 

528415G15-L

3 pole 0-100A Branch Breaker CT Kit

100:1

—

—

 

 

 

 

 

 

 

5

Page 8 Page 10
Page 9
Image 9
Liebert user manual Panel Board Voltage-Current Board Pbvi, CT matrix for the Liebert LDM
Page 8 Page 10

LDM specifications

Liebert LDM (Liebert Digital Monitor) is an advanced thermal management solution, specifically designed to enhance the performance and reliability of critical infrastructure systems. This innovative product from Vertiv caters to the growing demand for efficient cooling solutions in data centers, telecommunication sites, and other facilities requiring precise environmental control.

One of the standout features of the Liebert LDM is its advanced monitoring capabilities. The device is equipped with numerous sensors that measure crucial parameters, including temperature, humidity, and airflow. These measurements help operators analyze the cooling efficiency of their systems and ensure optimal operating conditions. The real-time data provided by the Liebert LDM allows for proactive maintenance, reducing the risk of equipment failure due to overheating or improper humidity levels.

The Liebert LDM employs sophisticated algorithms to optimize cooling performance. Its ability to analyze data trends plays a vital role in preventing hot spots and ensuring uniform cooling throughout the facility. This technology enhances the overall efficiency of cooling systems, which translates into reduced energy consumption and lower operating costs.

Another key characteristic of the Liebert LDM is its modular design. This flexibility allows users to scale their monitoring capabilities based on the size and complexity of their cooling setup. Whether a small server room or a large data center, the Liebert LDM can be tailored to meet specific operational needs.

Integration is another core advantage of the Liebert LDM. It seamlessly connects with various management systems and can be monitored through user-friendly interfaces. This interoperability ensures that facility managers can easily track performance metrics and integrate the Liebert LDM into their existing operational protocols.

The construction of the Liebert LDM is designed with durability and longevity in mind. Built to withstand the rigors of commercial use, the device features robust housing and weather-resistant components. This resilience ensures that the Liebert LDM remains a reliable tool within critical environments.

In summary, the Liebert LDM is a sophisticated thermal management solution combining precision monitoring, energy efficiency, modular flexibility, seamless integration, and robust design. As technology evolves, maintaining optimal environmental conditions becomes increasingly crucial. The Liebert LDM addresses these challenges, ensuring that critical systems operate reliably and efficiently in the face of rising demands.
Top Page Image Contents