Product Overview

2.0PRODUCT OVERVIEW

The Liebert Distribution Monitor (LDM) monitors the main panelboard circuit breaker and individual panelboard branch circuit breakers. The measurements are used to report the current and alarm con- ditions for each breaker. The Liebert LDM utilizes branch circuit sensor modules and individual cur- rent transformers (CT) to monitor current. In addition, the Liebert LDM monitors options like subfeed and output circuit breakers and provides a full array of power parameters and alarms.

The Liebert LDM is available as an option for the Liebert PPC™ Precision Power Center, Liebert FDC™, Liebert FPC™ and Liebert RDC™ Remote Distribution Cabinet.

The Liebert LDM system can communicate with a Building Management System (BMS) and Liebert SiteScan® Web.

The Liebert LDM consists of a control board, panelboard voltage and current board, power supply boards and sensor modules and can monitor two 42-pole panelboards and three subfeed breakers.

The Liebert LDM is capable of receiving input from 21-pole current sensor modules; two sensor mod- ules are required to monitor one 42-pole panelboard. The sensor module (BSM) contains twenty-one 50A current transformers (CTs) capsulated in an epoxy-filled plastic enclosure designed to be mounted next to the panelboard. Sensor modules are designed to work with Square D™ and GE pan- elboards. If a sensor module CT fails, connections are provided for up to six replacement CTs. The optional CTs can be attached directly to the load cable feeding the failed CT.

For branch breakers larger than 50A, discrete 100A rated large branch current transformers can be added. Higher-rated CTs can be used for monitoring optional subfeed circuit breakers. For subfeed breakers, like main panelboard breakers, the Liebert LDM monitors not only the 3-phase current but also the ground and neutral current. These subfeed circuit breakers are in addition to the 42 panel- board circuit breakers that can be monitored through the BSM. The Liebert LDM can accommodate 18 individual large current transformers.

If your Liebert power center is supplied with a Square D I-Line®panelboard, the Liebert LDM can also monitor it as well as its output breakers. A large interface board (LIB) replaces the panelboard voltage and current board and can monitor up to 42 poles. Each LIB can monitor eight 5-wire I-Line and/or subfeed breakers including ground and neutral current. There can be 1 or 2 LIBs per control board that can monitor a total of sixteen 5-wire I-Line and/or subfeed breakers.

The Liebert LDM has a Modbus port on the BCB for direct communication with a building manage- ment system (BMS). The Liebert LDM can communicate with Liebert SiteScan by using a Liebert SiteLink™ communication device. A Liebert SiteLink-2E™ is available as an option with the Liebert LDM and is mounted in the power center. Modbus Registry Summary documentation can be found at:

http://www.liebert.com/product_pages/ProductDocumentation.aspx?id=72

Click on the link for the Liebert Distribution Monitor (LDM Toolkit). Save the file to a desktop or lap- top computer (PC) and extract the contents.

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Liebert LDM user manual Product Overview

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.