Sometimes, when testing is carried out at the manufacturer's plant, the manufacturer will also allow a purchaser or a representative, such as a consulting engineer, to witness the tests. What types of trees and/or plants may be planted near pad-mounted transformers and power lines, and what do I need to consider prior to planting? When does Duke Energy obtain permission to trim or take down a tree? Reproduction, I found createlogodesign.com by searching the internet, and decided to try them out without a first hand referral. We believe it speaks for itself. In the past two years, two large projects in Miami Dade County have been built: the Florida International University football stadium and Miami International Airport South Terminal. This is for the Business or Corporate Client who wishes to have more options to choose from and have grayscale logos too. If you see a downed line, always assume it is energized and stay away. Roles and Responsibilities Associated with Clearances, 1 of 8 There are NEMA standards for transformer sound and depending upon the kVA rating of a unit, the sound it produces must be under a certain decibel level. Electrical Service Requirements (ESR) Current as of October 28, 2022 The ESR Manual provides guidance and instructions pertaining to electrical service connections. The loads, which are calculated as part of the building electrical system design phase, are shown in the construction documents respective equipment schedules in VA or kVA. North America | April 5, 2018. The revisions were done quickly and to my specifications, and often I was provided multiple versions from which to select. If appropriate, supports should be used so that the transformer enclosure is not crushed when the unit is lifted. Clay soils are compressible and can cause problems that may require stabilizing back-fill. While monitoring the voltages and currents, gradually increase the load in a stepped or gradual application until full load is reached. They are very professional, and the team knows their craft. The transformer should be jacked evenly on all four corners to prevent warping or tipping over. When specifying a transformer to be operated in parallel with existing units, all these parameters should be discussed with the transformer manufacturer. This article will continue in subsequent issues of EC&M. It shall be the customers endstream endobj 53 0 obj <>/Metadata 20 0 R/OpenAction 54 0 R/PageLayout/OneColumn/Pages 50 0 R/StructTreeRoot 32 0 R/Type/Catalog/ViewerPreferences<>>> endobj 54 0 obj <> endobj 55 0 obj <>/Font<>/ProcSet[/PDF/Text/ImageC]/XObject<>>>/Rotate 0/StructParents 0/Tabs/S/Type/Page>> endobj 56 0 obj <>stream When speaking to consulting engineers on this topic, we've found that they recommend the cable be sized for the transformer's nameplate rating. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. After installation, you should check the output voltage of the transformer. The difference is they contain an enclosed tank with nitrogen or other dielectric gas to protect the windings. This rating provides the associated power output delivered for a specific period by the loads connected to the transformer on the secondary side of the equipment. How it Works. hkO0ibv*JmG[$ We offer a 100% Satisfaction Guarantee. Units lifted from the top core clamps will sometimes require that the top cover or part of the cover be removed. You also have the option to opt-out of these cookies. Usually, additional testing means there will be an increase in transformer cost. The Duke Energy Progress (DEP) Distribution Construction Standards are available on the My Duke Energy Contractor Portal. We employ lateral and directional pruning methods endorsed by tree care professionals. Such stress could cause a bushing to crack or a connection to fail. Createlogodesign were fantastic. A protective plating or compound that prevents surface oxidation on the aluminum terminals is usually applied at the factory. Duke Energy Florida Power & Light Gulf Power Company Oklahoma Gas & Electric Tampa Electric 6. 450-12 on Terminal Wiring Space. I have recently used the services of CreateLogoDesign.com, and found their standard of skill and creativity to be exemplary. This tool is a safer and more effective alternative to sending crews on foot to perform backpack spraying in rough and mountainous terrain or hard-to-access areas, while also maintaining effective vegetation management along our power lines. This website uses cookies to improve your experience while you navigate through the website. Adequate surrounding air space must be maintained for the required transformer "heat loss" ventilation. 373-6, Deflection of Conductors, and referenced in Sec. 52 0 obj <> endobj %%EOF The difference in impedance should not exceed 7.5%. Other factors that should be considered in selecting transformers are voltage ratings for both primary and secondary, voltage taps, efficiency, impedance value, type of cooling and temperature rise, voltage insulation class, basic impulse level, and sound level. Also, it's a matter of cost. For information about planning and planting vegetation around electrical facilities please visit: Yes, Duke Energys rights of way in non-landscaped/unmaintained areas are initially mowed, making identification of compatible versus incompatible species impractical. [CDATA[// >