Incoming lines showing voltage and size.It is the first step in preparing a critical response plan, allowing you to become thoroughly familiar with the electrical distribution system layout and design in your facility. The single-line diagram is the blueprint for electrical system analysis. Provide a report of findings with any recommended actions.Update customer-provided single-line diagrams and provide an AutoCAD formatted version.Verify that a process to maintain up-to-date drawings is in place.Evaluate overall system design and determine whether the system can be maintained without shutdown.Verify potential single-points of failure.Confirm all loads connected to emergency/standby feeders. Once the survey is complete, our team will create a new, professional single-line diagram for your records. Doing this creates a building block of knowledge. Trained Vertiv™ technicians collect information to determine the elements that need to be deleted or added in the overall schematic. Performing an on-site survey of your electrical system is the first step to creating or updating a single-line diagram. You’ll have the information you need for system analysis and testing, as well as future maintenance and engineering studies including short circuit, coordination, load flow/power factor, power system, arc flash, and reliability studies. With your up-to-date diagram, you will have a better understanding of the electrical distribution system layout and design in your facility. The resulting detailed schematic clearly shows the main components of your electrical system and the power distribution path. A comprehensive site survey is conducted to inventory your equipment, verify drawings and processes, and evaluate design redundancy. Whether you have a new or existing facility, Vertiv can help create or update your single-line diagram. Keeping your single-line diagram up to date provides a road map that enables proper protection and system reliability, and is necessary for NFPA 70E compliance. The impact of these changes is not always apparent until some part of the system becomes overloaded or exhibits other problems. If your facility is like most, equipment and loads are continually added or removed in small increments, constantly changing your electrical infrastructure.
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