A check sheet should be used to record all items, and verification should be made that these items have been properly accounted for upon completion of work. 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 If you see a downed line, always assume it is energized and stay away. The difference is they contain an enclosed tank with nitrogen or other dielectric gas to protect the windings. endstream endobj 2044 0 obj <>>>/Pages 2032 0 R/StructTreeRoot 707 0 R/Type/Catalog>> endobj 2045 0 obj <>/Font<>/ProcSet[/PDF/Text/ImageC]/XObject<>>>/Rotate 0/StructParents 0/Type/Page>> endobj 2046 0 obj <>stream 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. The cookie is used to store the user consent for the cookies in the category "Other. After I submit activities, construction or landscaping plans, what type of authorization will I receive for the use of a Duke Energy easement? Line side (unmetered) and load side (metered) conductors shall not occupy the same raceway or enclosure. And, each manufacturer will have its own instructions for installing and testing its transformers. Otherwise, they can be installed on open walls or steel columns or above suspended ceilings. Duke Energy 3-Phase Padmount Transformer Concrete Foundation Specifications For Mecklenburg County, NC Only July 2009. Larger units will have provisions for lifting from the base frame or from clamps at the top of the core. Cast-coil transformers are constructed with the primary and secondary windings encapsulated in reinforced resin. The cables you install must be kept as far away as possible from coils and top blades. None of our competitors offer this kind of unique service. If this does not happen, de-energize the transformer and contact the manufacturer. What fantastic professionals to work with. hb```f eaak \6XBt+eNHPY0?P0dTh D>+30mg`T}n303c2bpa4%u`(00m] 9>b`28 *> These provisions will vary depending upon the weight, size, and mechanical configuration of the unit. 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. Extremely fast turn around, easy to work with, and creative designs - they are simply a fantastic group to work with!! If you cannot gradually increase the load, then full load may be applied. 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. Access to the Contractor Portal requires username and What is the time frame expected for the completion of customer-requested tree trimming? A right of way is a type of easement or agreement that grants a utility the right to use, access or transit a piece of property. Some manufacturers in the industry have extensive data on sounds produced by their transformers, and they usually can determine the sound level for a particular design quite accurately. Next, connect the load and energize the transformer. 1&Ub64#C #") "7KWpzJz1YeHB.r32Az{`gC~;jiV[Ceb*1rAz96lnA|3$ Necessary cookies are absolutely essential for the website to function properly. WebAustin Enclosures AB-243212CT/DP1G Duke Power CT Cabinet Austin rainproof boxes are for Wiring or Junction box applications. Adequate surrounding air space must be maintained for the required transformer "heat loss" ventilation. The 18,688-seat FIU football stadium was designed with about 12 transformers as part of the electrical system distribution in order to supply general-use receptacles, small motors, and other loads in the stadium building structure and the attached field house building. The cookie is used to store the user consent for the cookies in the category "Analytics". You should use commercially available, properly sized, UL-listed mechanical- or compression-type lugs. An IVM program evaluates vegetation and determines the best methods for maintenance and tree removal to ensure reliable service. 2067 0 obj <>/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 For harmonic mitigation, K-rated transformers can be combined with harmonic filters or chokes. It shall be the customers When does Duke Energy obtain permission to trim or take down a tree? This type is the most common to be used in the building indoor electrical system distribution. You may lift transformers with enclosures having lifting lugs by using appropriate slings or chains. Also, when aluminum conductors are used, give them a protective compound treatment at the terminal as specified by the cable manufacturer. Before a power line is built, Duke Energy acquires easements from property owners along the selected route. Transformers should be maintained in an upright position when being moved. I have found the after sales service to be as professional as the original work, nothing being too much trouble to ensure that the customer is completely satisfied. ; 4 Final files will be provided in any format. Can tree species that are compatible with a distribution line right of way be removed during routine maintenance? The distance increases with voltage for all voltages equal to or higher than 50,000 volts. fzVAm_mRJ}GoE>Mb-LBo^8p:>db[[wRI)9:K^>P[A$K)-Jc]!AwDI3rJ7aZVv0%DYxX^{{iQ]7-n%3wvg=yr Serious injuries and even fatalities have occurred when the local authority having jurisdiction (ahj) may have requirements that are more stringent. There are NEMA standards for transformer sound and depending upon the kVA rating of a unit, the sound it produces must be under a certain decibel level. To get your Company Logo developed by our experienced Logo Designers, please fill out our Order Form. 820 0 obj <> endobj For transformers placed outside that are 2000kVA and above, you may wish to have the soil examined. thick with chamfered edges on top of the base and footings extending 20 in. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. They have proactively gone above and beyond to do an exceptional job with everything. <> hToSU}W`lq;!%Ya82/>Z%&t-v @4Fi)<4Q#`xn\ H h `eXZ[5baH889j UpuUdb1eFl*]F~`[_(`ul)iYJ:Jg@CzgrD6Dr-'vv(J2wfjA!fn+ZFg,y@)sqUXhgl{/5=9pn*-XGpcNZOZW,V2gTq,g W@01!86)mA3T$+'vrLA{0Q5 /Z5T* `=|pi})q\HO N|QjmGM1efL>kf(LXJ&|k\{11}7{C7zox>/n7E3p:? Transformers are located either outdoors or inside buildings in an electrical room or other areas as permitted by code. 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. Non-ventilated Transformers should be a minimum of 3 inches from any obstruction on all sides and top. Can I replace a tree that has been cut down? These include the operation of fans, motors, thermal relays, and other auxiliary devices. 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. These cookies track visitors across websites and collect information to provide customized ads. If you see a downed line, immediately contact Duke Energy. endstream endobj startxref I highly recommend that if you are looking for a graphic designer than createlogodesign is your first port of call. %%EOF The ESR Manual provides guidance and instructions pertaining to electrical service connections. Our logos are specifically created respecting the individuality of your company. Duke Energy Transmission procedure documents are the property of Duke Energy. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. It is obvious that CreateLogoDesign takes great pride in their work and rightly so. [ILLUSTRATION FOR FIGURE 1 OMITTED]. We offer a 100% Satisfaction Guarantee. hkO0ibv*JmG[$ Electric Service. There are different ways in which transformers are installed and used as part of a commercial building electrical system. Information on minimum wire bending space clearances at terminals for conductors is found in NEC Sec. They have clearly demonstrated their understanding of design while also meeting our needs. Such stress could cause a bushing to crack or a connection to fail. Where their use is required, 450-12 on Terminal Wiring Space. Web(2) Subsurface horizontal transformer (see Table 5 and Table 6 on Page 6). down from each of the ends of the long sides. We attempt to notify individual customers in advance of trimming or taking down trees on their property by leaving detailed door hangers with contact information. "7>^P*#e;dEH?7"\']Ec5>\(zx94|aX7NRc6~l}(} Occasionally, the installation of some method of sound abatement will be called for. The transformer should be jacked evenly on all four corners to prevent warping or tipping over. To simplify installation, you should request from the manufacturer a simplified outline drawing of the transformer. As appropriate, you should make arrangements to adequately support the incoming/outgoing connecting cables to ensure that there is no mechanical stress imposed on transformer bushings and connections. Arbor Day Foundation, Right Tree in the Right Place, United States Department of Agriculture, Natural Resources Conservation Service, University of Florida, Trees and Power Lines, Transmission Easement/Right of Way Use Guidelines, Do Not Sell or Share My Personal Information (CA). Before specifying any additional tests, you should contact the manufacturer to find out what data it has accumulated from testing essentially duplicate units. When transformers are installed for parallel operation, their rated voltages, impedances, and turn ratios ideally should be the same and their phasor relationships identical. 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). Never attempt to check the output voltage at the transformer. Introduction, 1 of 7 , active Introduction; Instructions, 2 of 7 Instructions; Circle of Safety, 3 of 7 Circle of Safety; Overview, 4 of 7 Overview; Objectives, 5 of 7 Objectives; Section Menu, 6 of 7 Section Menu; Clearances, 7 of 7 Clearances; Lesson 1, 2 of 7 Lesson 1. Both the voltages and currents should change in a similar fashion. system or end user to connect to any of the Duke Energy Midwest transmission systems must be submitted by written Application addressed as follows: Attention: Director, Midwest A note of caution: The information presented here is not meant to supersede any manufacturer's instructions. If this is not the case, deenergize the transformer and contact the manufacturer before proceeding further. Installing transformers in existing structures may require an analysis of the building for structural support capability since the original structural information may not be available. Also, it's a matter of cost. (Most of the information in these standards also can be applied to liquid-filled transformers.). Regardless of manufacturer, you should carefully follow these instructions to ensure adequate safety to personnel and equipment. Consult the transformer diagrammatic nameplate for information on what tap must be used to correct for extra high or extra low incoming line voltage. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. These cookies will be stored in your browser only with your consent. Member Resources. down from each of the ends of the long sides. Transformer primary and secondary voltages can be 2,400; 4,160; 7,200; 12,470; and 13,200 for 15-kV Class, and 120, 208, 240, 277, and 480 for 600-V Class. Some microprocessor-based electronic devices may not be able to withstand the voltage. An article on how to choose a transformer based on the latter criteria appeared in the May '96 issue of EC&M. ; 3 Then we will refine your Logo until you are 110 % satisfied! 4 0 obj 4, on page 44, and when all enclosure hardware is tightened so panels do not vibrate. 3 0 obj 847 0 obj <>stream Where can recorded transmission easement documents be found? We offer a truly unbelievable service for the price to help you get a great start or revamp your business. We have worked with various logo designers, and they are the cream of the crop. It is good practice to regularly test this type of transformer in order to determine dielectric breakdown, which affects its useful life. Check all of the tap jumpers for proper location and for tightness. Exception: Meter socket and current %PDF-1.5 Also, with this information, it will be easier to plan site arrangements. Click Here to see our Portfolio. Trees are assessed on a case-by-case basis. (3) Subway-LB transformer (see Table 8 on Page 7). 7. If the transformer can't be lifted by a crane, it can be skidded or moved on rollers, as shown in Fig. Foundation preparation usually includes an evaluation of soil characteristics and concrete work. Webrequirements. WebDuke Energy Transmission DECorp: Duke Energy Midwest . hb```7,^ cb'60H6wZ $(|`n`h`` ``{_j j[e13b{@38O=)HpG17hCDC i. You should consider this when planning the unit's installation. "7>^P*#e;dEH?7"\']Ec5>\(zx94|aX7NRc6~l}(} Structural support. When viewing transformer product literature, you'll probably find that one manufacturer's units will have differences from that of a competing manufacturer. All rights reserved. 1 A Minimum of 4 Original Drafts for your Logo. Small transformers, arguable those below 400kVA, usually don't have extensive testing as they are often installed far downstream in a power system; as such, their importance is not as vital as compared with larger units. Use of alternate means of fire protection must be approved by the local code enforcement authority. %PDF-1.7 % Several transformer types rated higher than 600 V for oil insulated type, higher than 35,000 V for dry type, and other transformers rated higher than 600 V are required to be located in vault rooms, which must be built with fire-rated enclosures depending on the transformer type and applicable local authority requirements, when indoors. Call, For additional information please visit our. thick with chamfered edges on top of the base and footings extending 20 in. In maintained or landscape settings, our policy is to dispose of any small limbs and brush. Serious injury or death may result from climbing a tree and making direct contact with or coming too close to an energized line. We do UNLIMITED REVISIONS until you are 110% satisfied with your logo. The usual sound levels for liquid-filled transformers range from 40 dB to 60 dB for units below 500kVA, about 65 dB for units between 4000kVA to 5000kVA, 73 dB for transformers with ratings between 6000kVA to 7500kVA, and 76 dB for units between 8000kVA and 10,000kVA. A number of these tests are done on the plant floor, while other tests are conducted usually after delivery is made.
Totally Tangerine Dahlia For Sale,
Buckeye Local Football,
Amari Bailey Grade,
Jeremiah Johnson Tongo Tongo,
Articles D
