duke energy transformer clearance requirements

Duke Energy uses aerial application of herbicides in areas with high brush density and rough terrain and that are hard to access to control trees and other vegetation that can pose power outage threats. Serious injuries and even fatalities have occurred when untrained individuals have done this work without the assistance of qualified professionals. We also use third-party cookies that help us analyze and understand how you use this website. You will not be disappointed, i promise. Nonventilated dry-type transformers are similar to the ventilated type but are totally enclosed. Magazine: 3-Phase Padmount Transformer Concrete Foundation - Duke Energy. Energy Efficient Transformer require a minimum of 3`` clearance from ventilated openings. However, their operating principles will remain with the same. They were great at following our directions to the letter, while adding their own creative flair. By studying the overall mounting and terminal dimensions, it's possible to plan the installation with an orderly arrangement of connections. <> Well remember your selection for future visits. After I submit activities, construction or landscaping plans, what type of authorization will I receive for the use of a Duke Energy easement? If the transformer can't be lifted by a crane, it can be skidded or moved on rollers, as shown in Fig. more than ten (10) 600 MCM or smaller conductors per phase, or more than eight (8) When specifying a transformer to be operated in parallel with existing units, all these parameters should be discussed with the transformer manufacturer. This website uses cookies to improve your experience while you navigate through the website. K-rated transformers do not mitigate or eliminate harmonics. They have proactively gone above and beyond to do an exceptional job with everything. Note that for MV transformers, the secondary neutral is sometimes grounded through an impedance. The transformer is equal to or less than its rated kVA and rated voltage. Before applying any voltage to the transformer, you should make sure that the tank for wet-types, or the enclosure and core assembly for dry-types, is permanently and adequately grounded. 0 But opting out of some of these cookies may affect your browsing experience. Most soils are able to withstand a bearing pressure of 2500 lbs/sq ft. Therefore, a 75 kVA transformer would be selected for this application out of the available standard ratings for a 480 V primary to 208 Y/120 V secondary. Watch Jana's Story. You may lift transformers with enclosures having lifting lugs by using appropriate slings or chains. After applying proper torque, you should wait a minute or so, and then re-tighten all bolts to the specified torque. We are well pleased to work with createlogodesign. endobj In some locations, Duke Energy may have an easement of varying widths. What can I do in a transmission right of way? The average temperature of the cooling air during a 24-hour period is 86 F. The temperature of the cooling air at no time exceeds 104 F. This may call for compromises regarding the length of the conductors going to and/or from the transformer. Click here to start this process. We will definitely work with them in the future, and recommend them to anyone who is serious about having quality work done for business. The revisions were done quickly and to my specifications, and often I was provided multiple versions from which to select. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. Next, connect the load and energize the transformer. Who can request trimming or removal of a tree? You should consider contributing to our CFE Media editorial team and getting the recognition you and your company deserve. Duke Energy contractors have been trained on the proper, safe and environmentally responsible techniques of managing plant growth. 3 0 obj % Duke Energy Corporation. An IVM program evaluates vegetation and determines the best methods for maintenance and tree removal to ensure reliable service. The cookies is used to store the user consent for the cookies in the category "Necessary". Typically, the property owner should make the request. The maximum continuous load a transformer can handle is indicated on its nameplate. Following are some of the transformer types available in the industry along with a few of their characteristics: Ventilated dry-type transformers are ventilated by air, use larger space for clearance, and use different insulating materials to augment the dielectric strength of the air. Regardless of manufacturer, you should carefully follow these instructions to ensure adequate safety to personnel and equipment. WebRequirements 1) It shall be the contractor's responsibility to secure the Power Company's approval prior to applying for a permit. I was so impressed with the finished result that I've asked them to undertake future work. Does Duke Energy manage vegetation that interferes with the light levels or pattern of light from streetlights and security lights? The cables you install must be kept as far away as possible from coils and top blades. Reproduction, In the presence of a magnetic field, the core laminations elongate and contract. 2023 Endeavor Business Media, LLC. %%EOF 2013-2014 | All Rights Reserved MERIT MEDIA INT. Consult the transformer diagrammatic nameplate for information on what tap must be used to correct for extra high or extra low incoming line voltage. You can have big-business results at a "business-on-a-budget" price! 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. endobj The MIA South Terminal expansion was designed with about 50 transformers with similar intent as the stadiums but a more diverse group of loads for the 208 Y/120 V 3-phase, 4-wire system, which also included lighting loads, signage, telecommunication, security systems, and other loads part of this building project (Figure 1). Duke Energy Florida Power & Light Gulf Power Company Oklahoma Gas & Electric Tampa Electric 6. You should consider this when planning the unit's installation. If trees or limbs have fallen onto power lines, we will dispatch crews to clear the vegetation from power lines and equipment. An easement is typically granted by property owners to an electric utility for the purpose of constructing and maintaining power lines and other equipment. This cookie is set by GDPR Cookie Consent plugin. Aerial maintenance applications can be completed much more quickly than manual spraying, reducing crew exposure to physical hazards in the right-of-way environment. Till date we have designed more than 5,000 business logos. The harmonics resulting from nonsinusoidal currents generate additional losses and heating of the transformer coils, which reduce the transformer life expectancy. Business Card, Blue Lake Rancheria. The installation of conductors should be performed only by personnel qualified and experienced in high-voltage equipment. Transformers, along with other power distribution apparatus, remain a fundamental component in electrical systems distribution for commercial buildings. Will I be notified before a tree crew comes to cut trees in my yard? If the unit is installed in a location it shares with other equipment such as motors, pumps, or compressors, the transformer hum will go unnoticed. The transformer is equal to or less than its rated kVA and rated voltage. This article will continue in subsequent issues of EC&M. But opting out of some of these cookies may affect your browsing experience. When you start making the connections between the transformer's terminals and the incoming and outgoing conductors, carefully follow the instructions given on the nameplate or on the connection diagram. * Insulation power factor, which is done at initial installation and every few years thereafter to help determine the aging process of the insulation. These cookies will be stored in your browser only with your consent. It's the responsibility of the property owner to maintain the growth of any trees interfering with the lighting pattern. The greater the differences in these parameters, the greater the magnitude of the circulating current. They can be installed outdoors or indoors. 3-Phase Padmount Transformer Concrete Foundation - Duke Energy. Our site is customized based on your location. hb```f eaak \6XBt+eNHPY0?P0dTh D>+30mg`T}n303c2bpa4%u`(00m] 9>b`28 *> The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". If any PECO Energy Employee The specific requirements start in 110.26 (A) and refer to "equipment operating at 1000 volts, nominal, or less to ground andlikely to require examination, adjustment, servicing, The distance increases with voltage for all voltages equal to or higher than 50,000 volts. All rights reserved. Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. They contain an enclosure surrounding the windings for their mechanical protection and the safety of personnel. Before energizing the unit, it's very important that you alert all personnel installing the transformer that lethal voltages will be present inside the transformer enclosure as well as at all connection points. Duke Energy Carolinas Distribution Construction Standards Reference Guide The Duke Energy Carolinas Distribution Construction Standards consist of the following documents available on Although there are no moving parts in a transformer, the core does generate sound. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. In addition, to avoid problems, a civil engineer should be consulted for guidance on the above matters. When people identify downed lines or trees touching power lines and act wisely, it minimizes the risk from trees contacting power lines. Large enclosed units with base frame type enclosures may be jacked using the base frame angles. The foundation should be constructed of reinforced, air entrained concrete having at least 3000 psi compressive strength at 28 days after pouring. Part 3 will cover installation procedures for liquid-filled transformers that are shipped unassembled. Webrequirements. *[L EgptA80~@GI#Q@hxMGPhMgoQ ] $ k, `h`` ``{_j j[e13b{@38O=)HpG17hCDC i. To get your Company Logo developed by our experienced Logo Designers, please fill out our Order Form. To simplify installation, you should request from the manufacturer a simplified outline drawing of the transformer. Some transformer manufacturers recommend that the cable size be based on an ampacity level of 125% of nameplate rating. You may also hire a company to remove the debris or contact your local public works to see if they remove yard debris. Personnel should be instructed that should any service work be required to the unit, the lines that power the transformer must be opened and appropriate safety locks and tags applied. It is good practice to regularly test this type of transformer in order to determine dielectric breakdown, which affects its useful life. Yes, there are special circumstances that may include: (1) the proper ANSI cut is not a specified distance from the centerline, (2) the trunk of a mature tree is established within rights of way, (3) the tree is inhabited by an endangered species, (4) the tree is a slow-growing species or (5) there is a Department of Transportation encroachment. Electrical Service Requirements (ESR) Current as of October 28, 2022 The ESR Manual provides guidance and instructions pertaining to electrical service connections. Can tree species that are compatible with a distribution line right of way be removed during routine maintenance? <>>> With Duke Energys Builder Portal, you have the tools you need to get it done, right at your fingertips. Selecting, sizing transformers for commercial buildings, By using this website, you agree to our use of cookies. It is obvious that CreateLogoDesign takes great pride in their work and rightly so. Never touch or try to drive over a downed power line. thick with chamfered edges on top of the base and footings extending 20 in. //-->/Filter/FlateDecode/ID[<40F8DD91F560784FAE35A61D83A94C90>]/Index[2043 102]/Info 2042 0 R/Length 116/Prev 852971/Root 2044 0 R/Size 2145/Type/XRef/W[1 3 1]>>stream You have already flagged this document.Thank you, for helping us keep this platform clean.The editors will have a look at it as soon as possible. down from each of the ends of the long sides. 450-12 on Terminal Wiring Space. 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Division 01 - General Requirements Division 02 - Existing Conditions Division 03 - Concrete Division 04 - Masonry Division 05 - Metals Division 06 - Wood, Plastics, and Composites All Duke Energy transmission structure numbers are typically located three-quarters of the way up the pole or on one of the legs of the tower. createlogodesign provided very impressive artwork for our projects and does so in a very timely, efficient manner. On-site health department permit shall be in place at this time. None of our competitors offer this kind of unique service. ; 4 Final files will be provided in any format. Are there transmission right-of-way uses that are prohibited? Are there any special circumstances that would cause Duke Energy to limit tree pruning to less than a specified distance on either side of the right of way centerline? There are additional tests that may be applicable, depending upon how and where the transformer will be used. These terminations should be attached to the cables as specified by the termination or cable manufacturer. Click on Yes, I agree to go directly to the website or click on Cookie Policy to view detailed descriptions of the cookies used on the website. All windings should be checked for continuity. Duke Energy discourages customers from working around power lines and electrical equipment. 3, on page 42. WebThe Duke Energy Renewables Facility this position would report to is located in Mercedes, Texas. [CDATA[// >