Call, For additional information please visit our. To know about this special offer, please click here. Southern California Edison, Disclosure of Non-Public Transmission Function Information, SCE Affiliates that Employ or Retain Marketing Function Employees, Job Titles and Description of SCE's Transmission Function Employees, Voluntary Consent to Share Non-Public Transmission Customer Information, Discretion Exercised Under Terms of Tariff, Discounts Offered For Transmission Service, Santa Catalina Island Gas & Water Tariffs, Santa Catalina Island Gas & Water Filed Forms, Notice of Release of Customer Information to Affiliates, Supply / Capacity / Services / Info Offered to Affiliates, Non-Customer Specific, Non-Public Information Offered to Affiliates, Annual Low Income Energy Efficiency Reports, 2009-11 Local Government Partnership Abstract Responses, Transmission Maintenance and Compliance Review (TMCR), Methodology of Creating the Static Load Profiles, SCE Offers Fixed-Price Amendment to Renewable Projects, Electrical Service Requirements (ESR - PDF), Regulatory Information - SCE Distribution Manuals. Nonventilated dry-type transformers are similar to the ventilated type but are totally enclosed. For linear load applications, transformers should be selected with lower core losses. 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. 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. (If the power transformer has CT circuits, they should be closed.) Another consideration for indoor distribution transformers is the type of load: linear or nonlinear. Consult the transformer diagrammatic nameplate for information on what tap must be used to correct for extra high or extra low incoming line voltage. Usually, additional testing means there will be an increase in transformer cost. Tree placement in relation to overhead power lines is critical in order to preserve the natural size, shape and overall integrity of the tree and protect the intent for which it was planted. Most soils are able to withstand a bearing pressure of 2500 lbs/sq ft. Contact Duke Energy to request a representative to make evaluations of your request. Why are you trimming or cutting down my trees? 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. However, a specially designed unit may have specific load capabilities not indicated on the nameplate. Standard transformer tests performed for each unit include the following: * Polarity for single- and 3-phase units (because single-phase transformers are sometimes connected in parallel and sometimes in a 3-phase bank); * Phase relationship for 3-phase units (important when two or more transformers are operated in parallel); * Excitation current, which relates to efficiency and verifies that core design is correct; * No-load core loss, which also relates to efficiency and correct core design; * Resistance, for calculating winding temperature and [I.sup.2]R component of winding losses (usually not required on 600V class units); * Impedance (via short circuit testing), which provides information needed for breaker and/or fuse sizing and interrupting rating and for coordinating relaying schemes; * Load loss, which again directly relates to the transformer's efficiency; * Regulation, which determines voltage drop when load is applied; and. The installation of conductors should be performed only by personnel qualified and experienced in high-voltage equipment. If the structure is wooden and 30 to 40 feet tall with or without transformers attached, it is typically a distribution pole. Mounting the unit on a platform that has less mass than the transformer will make the platform serve as a sounding board, just like the body of a violin. ; 2 Unlimited revisions. If this does not happen, de-energize the transformer and contact the manufacturer. Therefore, compatible versus incompatible species are subject to removal through mowing. Also, you should arrange for a one-minute, 1200V insulation resistance test of the control circuits. Can tree species that are compatible with a distribution line right of way be removed during routine maintenance? Some transformer manufacturers recommend that the cable size be based on an ampacity level of 125% of nameplate rating. Linear loads include resistive heating and induction motors; nonlinear loads are produced by electronic equipment that contributes to the distortion of the electrical power signals by generating harmonics. How do I request tree trimming or tree removal by Duke Energy? We will definitely work with them in the future, and recommend them to anyone who is serious about having quality work done for business. Trees can disrupt power in a number of ways. 837 0 obj <>/Filter/FlateDecode/ID[<628CD90D08ABAB4FB038EF4B9C9C7E56>]/Index[820 28]/Info 819 0 R/Length 84/Prev 192869/Root 821 0 R/Size 848/Type/XRef/W[1 2 1]>>stream The magnitude of the voltages shown (line-to-ground and line-to-line) should be very similar. it windows (first story) 10 10 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 An IVM program evaluates vegetation and determines the best methods for maintenance and tree removal to ensure reliable service. These application types include: Indoor distribution transformers are used with panelboards and are separately mounted to supply the specific electrical load requirements in a system-specific application within the system distribution. A number of manufacturers require that insulation resistance testing be successfully completed prior to the transformer being placed in service for the warranty to be valid. This website uses cookies to improve your experience while you navigate through the website. Create Logo Design offers professional and custom logo design services. Retail & Schools Depending upon the size and load requirements of the facility, the large majority of schools (except for some very large universities) and retail facilities are served by Duke Energy uses environmentally responsible herbicide applications to control tall-growing incompatible plants within power line rights of way. However, they do protect the transformer itself from damage caused by harmonics. F. Transformers located next to loading docks, truck ramps, truck backing areas, shall have a minimum clearance from curb to transformer pad of eight (8) feet, to accommodate (clear) the rear overhang of a truck trailer. PADMOUNT EQUIPMENT INSTALLED AT INTERSECTIONS 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? For units with ratings above 500kVA to 2500kVA, a typical concrete base would be 8 ft by 9 ft and 10 in. Before a power line is built, Duke Energy acquires easements from property owners along the selected route. We are delighted with the end result, it looks incredibly professional. From the start Steffi was prompt and responsive. Preliminary inspection upon receipt of transformer. The cookie is used to store the user consent for the cookies in the category "Other. The insulation resistance test should be conducted immediately prior to energizing the transformer or the beginning of the dielectric test. transformers must be pre-approved by Duke Energy. %PDF-1.5 % YUMPU automatically turns print PDFs into web optimized ePapers that Google loves. If an imminent threat to Duke Energy power lines exists, we prioritize and schedule the work based on the severity of the situation. With your ideas in mind, our skilled logo designers will be quick and creative enough to create an eye-catching logo. They gave us 6 logo ideas to start with. They supply the required incoming electrical service to the buildings. Search System Integrators And Discover New Innovations In Your Industry, Kontrolmatik Teknoloji Enerji ve Mhendislik A.. This does not apply to bottom ventilation openings. However, anyone is encouraged to report unsafe conditions. When changing taps, the same changes must be made for all phases. Our site is customized based on your location. Larger units will have provisions for lifting from the base frame or from clamps at the top of the core. Duke Energy trims trees to provide reliable service to our customers. Createlogodesign were fantastic. The revisions were done quickly and to my specifications, and often I was provided multiple versions from which to select. What happens when trees come into contact with power lines? Z%&t-v @4Fi)<4Q#`xn\ H h `eXZ[5baH889j UpuUdb1eFl*]F~`[_(`ul)iYJ:Jg@CzgrD6Dr-'vv(J2wfjA!fn+ZFg,y@)sqUXhgl{/5=9pn*-XGpcNZOZW,V2gTq,g W@01!86)mA3T$+'vrLA{0Q5 /Z5T* `=|pi})q\HO N|QjmGM1efL>kf(LXJ&|k\{11}7{C7zox>/n7E3p:? The development was easy because Steffi provided unlimited revisions, so we went through a series of small changes until we got a final. We offer a 100% Satisfaction Guarantee. However, if the tree poses a significant reliability risk or cannot be trimmed in a way that provides sufficient clearance until the next scheduled trim cycle while maintaining its health, the tree may be taken down. * Insulation power factor, which is done at initial installation and every few years thereafter to help determine the aging process of the insulation. But opting out of some of these cookies may affect your browsing experience. endstream endobj startxref These terminations should be attached to the cables as specified by the termination or cable manufacturer. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. The secondary is 3-phase, 4-wire or Wye connected. Web10-Clearances o 10.06-01 Minimum Guy Clearances 11-Metering Many of the standards in the following subsections are applicable: o 11.01 Self-Contained Metering General o 11.09 Transformer-Rated Metering, Primary, Three-Phase o 11.11 Transformer-Rated Metering, Primary, Three-Phase - UG DEP UG Distribution Standards Before energizing a 3-phase transformer, you should arrange to monitor the voltages and currents on the low-voltage side. Does Duke Energy use herbicides to control vegetation in rights of way? They were very attentive to our needs, very detailed with their work, and met the needs of our timetable. I have received many compliments on the work which has been undertaken thus far and have no hesitation in recommending CreateLogoDesign.com to friends and colleagues and will continue to do so. When placed inside or on top of a building, you must consider structural capabilities because a transformer represents a highly concentrated load. more than ten (10) 600 MCM or smaller conductors per phase, or more than eight (8) 450-12 on Terminal Wiring Space. Blue Lake Rancheria. Regulators get few answers from Duke about substation attacks, Attacks on substations in four states raise alarm, Duke Energy commissions Floridas first solar power plant, Duke Energy Florida builds state-of-the-art substation, Duke Energy awards $40k to RCCs substation program, Duke Energy prepares rapid response to tropical storm Elsa, Duke Energy plans to triple renewable energy production this decade, Duke Energy Uses 3-D Scanning in a Substation, Duke Energy building new transmission project in central Florida, Duke Energy to invest $36B on power projects by 2026, North Carolina to receive $13B electric grid boost, Duke Energy donates transformer to college electric program, Consumer office to propose rejection of Duke Energys $1.9 billion grid upgrade, Duke Energy plans $1.9 billion modernisation of electric grid, Failure of transformer banks at Duke Energy substation causes outage, www.transformers-magazine/privacy-policy/, www.transformers-magazine/cookies-policy/. Transformers remain a fundamental component of electrical distribution systems. Occasionally, a property owner will make the decision to conduct trimming or removals on their own or hire a third party. These procedures are different than rounding of trees over in which limbs are cut at arbitrary points, normally leaving unhealthy stub cuts. The location of a transformer relates directly to how noticeable its sound level appears. Next, connect the load and energize the transformer. The transformer should be jacked evenly on all four corners to prevent warping or tipping over. Click here to start this process. When a Customer does his own wiring, he will be considered the electrical contractor for the purpose of these requirements. For transformers placed outside that are 2000kVA and above, you may wish to have the soil examined. This article will continue in subsequent issues of EC&M. WebThe Duke Energy Renewables Facility this position would report to is located in Mercedes, Texas. %PDF-1.5 You should note, though, that transformers serving large harmonic loads can produce a higher audible noise. Such stress could cause a bushing to crack or a connection to fail. "7>^P*#e;dEH?7"\']Ec5>\(zx94|aX7NRc6~l}(} endobj Some manufacturers require that the megohmmeter readings and date of energizing be sent to them within a specified time after the transformer is placed in service for the warranty to be valid. Transformers are designed with provisions for lifting, jacking, and/or rolling. ; 2 Unlimited revisions. With Duke Energys Builder Portal, you have the tools you need to get it done, right at your fingertips. Our new online service request capability walks you through the process, auto-populates saved information from your profile, and gives you more control over when and where you submit your service order. Register for the portal today. If the transformer can't be lifted by a crane, it can be skidded or moved on rollers, as shown in Fig. What is the time frame expected for the completion of customer-requested tree trimming? The weight distribution should be studied by examining the inside of the transformer enclosure for dry-type units. [CDATA[// >